1UBERFTP(1C)                                                        UBERFTP(1C)
2
3
4

NAME

6       uberftp - GridFTP-enabled client
7

SYNOPSIS

9       uberftp [options] [host options] [host]
10
11       uberftp [options] [host options] host “cmd
12
13       uberftp [options] srcurl dsturl
14
15       uberftp [options] -f urlfile
16
17       uberftp [options] -cmd url
18
19

DESCRIPTION

21       uberftp  is a GridFTP-enabled client that supports both interactive use
22       and FTP commands on the uberftp command line to transfer files  between
23       two  computers.  It  is  intended  for  use  with computers that have a
24       GridFTP server installed. Uberftp supports GSI authentication, parallel
25       data channels and striping. For more information about GridFTP, see the
26       GridFTP URL in the "SEE ALSO" section below.
27
28       Only the first usage shown above will create an interactive session. If
29       host  is specified, uberftp immediately attempts to establish a connec‐
30       tion to the GridFTP server on host, enters its command interpreter  and
31       awaits  commands from the user. If host is not specified, uberftp imme‐
32       diately drops into the command interpreter without  connecting  to  any
33       GridFTP server.
34
35       The  second  usage  option  denotes  a non interactive session in which
36cmd” is a series of one or more commands as described in the  COMMANDS
37       section  below to run once the control connection is established. These
38       commands are run exactly as if they had been entered from the  interac‐
39       tive  prompt.  This  list must be enclosed in quotes. Multiple commands
40       are semicolon or comma delimited. uberftp will execute  these  commands
41       and then exit.  Uberftp will exit upon the first error encountered.
42
43       The third and forth usage statements use the URL style format for spec‐
44       ifying the source and destination for the files to transfer. The  third
45       usage  statement places these URLs on the command line. The forth usage
46       allows the user to specify multiple URL pairs in a  separate  file  for
47       Uberftp  to  transfer  one  at  a  time. The supported URL syntaxes are
48       gsiftp://[user@]host[:port]/file,  ftp://[user[:pass]@]host[:port]/file
49       and file://path.
50
51       The  fifth  usage  statement allows for commands that take pathnames to
52       accept URLs instead. The allowable commands are  listed  in  the  -cmds
53       section below.
54
55

HOST OPTIONS

57       -P port
58              Connect  to  port  instead  of  the default. The default for GSI
59              authentication is 2811. The default for password  authentication
60              is 21.
61
62       -u user
63              Connect  as  user.  This  is  useful  for  both password and GSI
64              authentication mechanisms.
65
66       -p pass
67              Use pass when authenticating. If pass  equals  X,  UberFTP  will
68              prompt for the password with character echoing turned off.
69
70
71

OPTIONS

73       -active
74              Use ACTIVE mode for data transfers.
75
76       -ascii Use ASCII mode for data transfers.
77
78       -binary
79              Use BINARY mode for data transfers.
80
81       -blksize n
82              Set the internal buffer size to n.
83
84       -cksum [on|off]
85              Enable/Disable CRC checks after file transfers.
86
87       -cos name
88              Set the storage class of service to name. Used with HPSS instal‐
89              lations.  Use the class of service name  default  to  allow  the
90              remote server to decide which class of service to use.
91
92       -d     Enable debugging. Same as '-debug 3'. Deprecated.
93
94       -debug n
95              Set the debug level to n.
96
97       -family name
98              Set  the  storage family to name. Use the family name default to
99              allow the remote server to decide which family to use.
100
101       -glob [on|off]
102              Enable/Disable filename expansion.
103
104       -hash  Enable printing of hash marks during transfers.
105
106       -keepalive n
107              Send control channel keepalive messages every n  seconds  during
108              data transfers.
109
110       -mode [E|S]
111              Switch  the  transfer mode to extended block (E) or streams mode
112              (S).
113
114       -parallel n
115              Use n parallel data channels during extended block transfers.
116
117       -passive
118              Use PASSIVE mode for data transfers.
119
120       -pbsz n
121              Set the data protection buffer size to n n bytes.
122
123       -prot [C|S|E|P]
124              Set the data protection lelvel to clear (C), safe (S), confiden‐
125              tial (E) or private (P).
126
127       -retry n
128              Retry commands that fail with transient errors n times.
129
130       -resume path
131              Retry the recursive transfer starting at path.
132
133       -tcpbuf n
134              Set the TCP read/write buffers to n bytes.
135
136       -wait  This  will  cause  the  client to wait for remote files to stage
137              before attempting to transfer them.
138
139       -v     Print UberFTP version information and exit.
140
141       -version
142              Print UberFTP version information and exit.
143
144       -versions
145              Print version information about  all  used  globus  modules  and
146              exit.
147
148

Supported -cmds

150       -cat url
151              Print to stdout the contents of the remote file.
152
153       -chgrp [-r] group url
154              Set the group ownership of the remote object(s).
155
156       -chmod [-r] perms url
157              Set the permissions of the remote object(s).
158
159       -dir [-r] url
160              List the contents of the remote object.
161
162       -link url path
163              Create a hardlink named <path> to the remote object.
164
165       -ls [-r] url
166              List the contents of the remote object.
167
168       -mkdir url
169              Create the remote directory.
170
171       -rename url path
172              Rename the remote object to the given path.
173
174       -rm [-r] url
175              Remove the remote object(s).
176
177       -rmdir url
178              Remove the remote directory.
179
180       -size url
181              Return the size of the remote object.
182
183       -stage [-r] seconds url
184              Attempt to stage the remote object(s) over the time period given
185              in seconds.
186
187       -symlink url path
188              Create a symlink named <path> to the remote object.
189
190

DEFAULT TRANSFER MODE

192       By default, without any special  environment  variables,  command  line
193       options  or  commands,  uberftp  will transfer files in PASSIVE STREAMS
194       mode.  PASSIVE means that the client will initiate the data  connection
195       which  is  useful for users behind firewalls. STREAMS mode implies that
196       GRIDFTP features including striping and parallel data  connections  are
197       not  used.  In  order  to take advantage of these features with GridFTP
198       capable servers, you must either change the mode directly using -m com‐
199       mand line switch or the mode interactive command, or you can change the
200       mode indirectly by specifying more than one  parallel  data  connection
201       using  the  -c command line switch or by using the parallel interactive
202       command.
203
204

GETTING YOUR GSI PROXY

206       By default, uberftp requires a GSI certificate. If you do  not  already
207       have a certificate, see the following web page to learn how to get one:
208
209       http://www.ncsa.uiuc.edu/UserInfo/Grid/Security/GetUserCert.html
210
211       Once  you  have a certificate, use the grid-proxy-init command to get a
212       valid proxy.
213
214

COMMANDS

216       ! [command]
217              Run the command using a shell on the local machine. If  no  com‐
218              mand is given, invoke an interactive shell.
219
220       ? [command]
221              If command is given, print a (hopefully) helpful blurb about it.
222              Otherwise, list all commands.
223
224       active Change to ACTIVE mode which causes the server  to  initiate  the
225              data connection. The default is PASSIVE mode unless the variable
226              UBERFTP_ACTIVE_MODE is set in the environment. If you are behind
227              a firewall you must use PASSIVE mode.
228
229       ascii  Change  the  data transfer type to ASCII which causes the server
230              to do some simple transformations to the file being transferred.
231              This  is  mostly  useful  for changing EOL (end of line) in text
232              files when moving between  platforms.   This  option  is  almost
233              never  necessary today. The default is BINARY mode also known as
234              IMAGE mode.
235
236       binary Change the data transfer type to BINARY (aka IMAGE) which causes
237              the  server  to  not  perform  transformations to the file being
238              transferred. This is the default and is  faster  than  an  ASCII
239              transfer.
240
241       blksize size
242              Change the size of the memory buffer used to read and write data
243              to disks to size bytes. The  default  block  size  is  1024*1024
244              (1048576) bytes but it can be changed at compile time. The block
245              size can be increased to improve file transfer performance. This
246              is  not  related  to  the extended block mode block size used to
247              determine the ratio of data to header for  data  transferred  on
248              the data channel.
249
250       bugs   Prints information regarding bug reporting and feature requests.
251
252       bye    Close all control and data connections and exit.
253
254       cat file1 [file2 ... filen]
255              Print the contents of the remote file(s) to stdout.
256
257       cdup   Change the remote working directory up one level.
258
259       cd [dir]
260              Change the remote working directory to dir. If dir is not given,
261              the client will make every attempt to change to the user's  home
262              directory.
263
264
265       chgrp [-r] group object [object2 ... objectn]
266              Change group ownership on the remote object(s).
267              -r   Recursively chgrp everything in the given directory.
268
269
270       chmod [-r] perms object [object2 ... objectn]
271              Change permissions on the remote object(s).
272              -r   Recursively chmod everything in the given directory.
273
274       close  Close the control connection to the remote host.
275
276       cksum [on|off]
277              Enable file cksum comparison after each file transfer. This only
278              works with NCSA's mass storage system.
279              on    Enable checksum comparison
280              off   Disable checksum comparison
281
282       cos name
283              Sets the HPSS class of service to name on the FTP service if the
284              service  supports  it.  If name is omitted, the current class of
285              service is printed.  Use the class of service  name  default  to
286              allow the remote server to decide which class of service to use.
287
288       dcau [N|A|S subject]
289              Change  the data channel authentication settings. If the service
290              does not support DCAU, these settings are ignored.
291              N  Disabled dcau.
292              A  Expect the remote identity to be mine. (Default)
293              S subject Expect the remote identity to be subject.
294
295       debug [0-3]
296              Turn debug statements on/off. If no value is given, this command
297              will  toggle  between  debug(2) and non debug(1) mode. Otherwise
298              the debug level is set to the given level.
299              0  Only errors are printed
300              1  Default. Errors and some helpful messages are printed
301              2  Print useful control channel information
302              3  Print all information
303
304       family name
305              Sets the tape family to name on the FTP service if  the  service
306              supports  it. If name is omitted, the current family is printed.
307              Use the family name default to allow the remote server to decide
308              which family to use.
309
310       glob [on|off]
311              Enable or disable filename globbing. If no option is given, this
312              command will toggle the current setting.
313              on    Enable filename globbing
314              off   Disable filename globbing
315
316       dir [-r] [target]
317              List the contents of the remote target directory. If  target  is
318              not given, then the current working directory is used.
319              -r      Recursively list target.
320              target  Directory or file to list. '.' is used by default.
321
322       get [-r] source [destination]
323              Retrieve file(s) from the remote service. If source implies mul‐
324              tiple transfers, either through regular expressions or by  using
325              the  recursive feature, then destination must be a directory. If
326              destination is not specified, source is used.
327              -r   Recursively transfer the given directory.
328
329       hash   Print hash marks during data transfers. This does not work  dur‐
330              ing third party transfers.
331
332       help [command]
333              If  command is given, print a helpful blurb about command.  Oth‐
334              erwise, list all commands.
335
336       keepalive [seconds]
337              Attempts to keep the control channel from being blocked by fire‐
338              walls  during long data channel operations. UberFTP sends a NOOP
339              command to the service at intervals equal to the specified  num‐
340              ber  of  seconds.  Setting it to zero will disable keepalive. If
341              seconds are not given, the current timeout  is  displayed.  This
342              feature is disabled by default.
343              seconds  number of seconds between NOOPs. Disabled if zero.
344
345       lcat file1 [file2 ... filen]
346              Print the contents of the local file(s) to stdout.
347
348       lcd [dir]
349              Change  the local working directory to dir. If dir is not given,
350              the client will make every attempt to change to the user's  home
351              directory.
352
353       lcdup  Change the local working directory up one level.
354
355       lchgrp [-r] group object [object2 ... objectn]
356              Change group ownership on the local object(s).
357              -r   Recursively chgrp everything in the given directory.
358
359
360       lchmod [-r] perms object [object2 ... objectn]
361              Change permissions on the local object(s).
362              -r   Recursively chmod everything in the given directory.
363
364       lclose Close the control connection to the local host.
365
366       ldir [-r] [target]
367              List  the  contents  of the local target directory. If target is
368              not given, then the current working directory is used.
369              -r      Recursively list target.
370              target  Directory or file to list. '.' is used by default.
371
372       link [oldfile] [newfile]
373              Create a hardlink to oldfile named newfile on  the  remote  ser‐
374              vice.
375
376       llink [oldfile] [newfile]
377              Create a hardlink to oldfile named newfile on the local service.
378
379       lls [-r] [target]
380              List  the  contents  of the local target directory. If target is
381              not given, then the current working directory is used.
382              -r      Recursively list target.
383              target  Directory or file to list. '.' is used by default.
384
385       llscos List the available class of services on the local  server  (HPSS
386              only).
387
388       llsfam List  the  available  tape  families  on  the local server (HPSS
389              only).
390
391       lmkdir dir1 [dir2 ... dirn]
392              Create the local directory(ies).
393
394       lopen [-P port] [-u user] [-p pass | X] host
395              Opens a control channel  to  host  and  that  host  becomes  the
396              'local'  machine.   After  using  lopen, all local (l*) commands
397              perform their respective operations  on  host  rather  than  the
398              local  machine.  This  is  how  third party transfers are accom‐
399              plished. GSI authentication is used  unless  the  -p  option  is
400              used.
401              -P  port    Connect  to port (Default 2811 for GSI, 21 for pass‐
402              word).
403              -u user   Connect as alternate user.
404              -p pass | X
405                        Use password pass when authenticating with host.
406                        If pass equals X, read the password from STDIN with
407                        character echoing turned off.
408              host      Connect to host.
409
410       lpwd   Prints the current local working directory.
411
412       lrename src dst
413              Rename the local object src to dst.
414
415       lrm [-r] object1 [object1...objectn]
416              Removes the local file system object(s).
417              -r   Recursively remove the given directory.
418
419       lrmdir dir1 [dir2...dirn]
420              Removes the given directories from the local service.
421
422       lquote cmd
423              Pass cmd to the local FTP service. This allows the user  to  use
424              server-specific  commands  that  are  not  available through the
425              uberftp interface.
426
427       ls [-r] [target]
428              List the contents of the remote target directory. If [target] is
429              not given, then the current working directory is used.
430              -r      Recursively list target.
431              target  Directory or file to list. '.' is used by default.
432
433       lscos  List  the available class of services on the remote server (HPSS
434              only).
435
436       lsfam  List the available tape families  on  the  remote  server  (HPSS
437              only).
438
439       lsize file1 [file2...filen]
440              Prints the size of the given object(s).
441
442       lstage [-r] seconds object1 [object2...objectn]
443              Attempt  to  stage all matching files within the given number of
444              seconds on the local service.
445              seconds  number of seconds to attempt staging
446              -r       Recursively stage all files in the given subdirectory.
447
448       lsymlink [oldfile] [newfile]
449              Create a symlink to oldfile named newfile on the local service.
450
451       mput [-r] object1 [object2...objectn]
452              Retrieve file(s) from the remote service. This  is  similiar  to
453              making multiple calls to get without specifying a destination.
454              -r   Recursively transfer the given directory.
455
456       mkdir dir
457              Create the remote directory.
458
459       mode [E|S]
460              Toggle  the data transfer mode between Streams mode and Extended
461              Block mode. The default is Streams mode. If no option is  given,
462              it will display the current mode.
463              E   Extended block mode
464              S   Streams mode
465
466       mput [-r] object1 [object2...objectn]
467              Store  file(s) to the remote service. This is similiar to making
468              multiple calls to put without specifying a destination.
469              -r   Recursively transfer the given directory.
470
471       open [-P port] [-u user] [-p pass | X] host
472              Opens a control channel  to  host  and  that  host  becomes  the
473              'remote'  machine.  GSI  authentication  is  used  unless the -p
474              option is used.
475              -P port   Connect to port (Default 2811 for GSI,  21  for  pass‐
476              word).
477              -u user   Connect as user.
478              -p pass | X
479                        Use password pass when authenticating with host.
480                        If pass equals X, read the password from STDIN with
481                        character echoing turned off.
482              host      Connect to host.
483
484       order [type]
485              Changes the order of lists returned from ls and lls to the given
486              scheme.  If type is not given, the current order is displayed.
487              type    Ordering scheme to use. Value options are:
488                         none  Do not order listings
489                         name  Order listings by name
490                         size  Order listings by size
491                         type  Order listings by type
492
493       parallel [number]
494              Set the number of parallel data connections to number.  This  is
495              only  useful for extended block mode transfers. The default num‐
496              ber of data connections is one. If no number is given, the  cur‐
497              rent setting for the number of parallel connects is printed.
498
499       passive
500              Change  to  PASSIVE mode which causes the client to initiate the
501              data connection. This is the default mode  unless  the  variable
502              UBERFTP_ACTIVE_MODE is set in the environment. If you are behind
503              a firewall you must use PASSIVE mode.
504
505       pbsz [size]
506              Change the length of the protection buffer. The protection  buf‐
507              fer  is  used to encrypt data on the data channel. The length of
508              the protection buffer represents  the  largest  encoded  message
509              that is allowed on the data channel.  By default, the protection
510              buffer is grown to match the internal buffer used. For efficient
511              transfers,  pbsz  should  be sufficiently larger than blksize so
512              that the wrapped buffer fits within the protection buffer.  Oth‐
513              erwise,  the  blksize  buffer  is broken into multiple pieces so
514              that each write is less than pbsz when wrapped. If pbsz  is  not
515              given, the current size is displayed.
516              size    length  of  protection  buffer.  0  will  set  it to its
517              default.
518
519       pget offset size srcfile [destfile]
520              Retrieve only the specified portion of the file(s).  If  srcfile
521              is  a regular expression and expands to multiple files, and des‐
522              tination is given, destination must refer to a directory.
523              offset   Offset within the file
524              size     Amount of data to retrieve
525              srcfile  Name of remote file
526              destfile Name of local file. srcfile is used if destfile
527              is not specified
528
529       pput offset size srcfile [destfile]
530              Store only the specified portion of the file(s). If srcfile is a
531              regular  expression  and expands to multiple files, and destina‐
532              tion is given, destination must refer to a directory.
533              offset   Offset within the file
534              size     Amount of data to retrieve
535              srcfile  Name of local file
536              destfile Name of remote file. srcfile is used if destfile
537                       is not specified
538
539       prot [C|S|E|P]
540              This command configures the level of security on the data  chan‐
541              nel after data channel authentication has completed. Clear means
542              that the data will not be protected. Safe means  that  the  data
543              will  be  integrity  protected meaning that altered data will be
544              detected. Confidential means that the data will be unreadable to
545              third  parties. Private mode means the data will be confidential
546              and safe.
547              C  Set protection level to clear.
548              S  Set protection level to safe.
549              E  Set protection level to confidential.
550              P  Set protection level to private.
551
552       put [-r] source [destination]
553              Store file(s) to the remote service. If source implies  multiple
554              transfers,  either  through  regular expressions or by using the
555              recursive feature, then destination must be a directory. If des‐
556              tination is not specified, source is used.
557              -r   Recursively transfer the given directory.
558
559       pwd    Prints the current working directory.
560
561       quit   Close all control and data connections and exit.
562
563       quote cmd
564              Pass  cmd to the remote FTP service. This allows the user to use
565              server-specific commands that  are  not  available  through  the
566              uberftp interface.
567
568       rename src dst
569              Rename the remote object src to dst.
570
571       retry [cnt]
572              Configures  retry on failed commands that have transient errors.
573              cnt represents the number of times a failed command is  retried.
574              A value of zero effectively disables retry. Zero is the default.
575              If no value is given the current setting is displayed.
576              cnt    Number of times a failed command is retried.
577
578       resume [-d] path
579              Sets a restart point for recursive transfers. If a  long  recur‐
580              sive  transfer fails, you can set resume to the path that failed
581              and UberFTP will skip all file and directory creations up to the
582              given path.
583              path    Path  to resume transfer at. If path is not given, print
584              the current
585                     resume target.
586              -d     Remove the current resume path.
587
588       rm [-r] object1 [object1...objectn]
589              Removes the remote file system object(s).
590              -r   Recursively remove the given directory.
591
592       rmdir dir1 [dir2...dirn]
593              Removes the given directories from the remote service.
594
595       runique
596              Toggles the client to store files using unique names during  put
597              operations.
598
599       size file1 [file2...filen]
600              Prints the size of the given object(s).
601
602       stage [-r] seconds object1 [object2...objectn]
603              Attempt  to  stage all matching files within the given number of
604              seconds on the remote service.
605              seconds  number of seconds to attempt staging
606              -r       Recursively stage all files in the given subdirectory.
607
608       sunique
609              Toggles the client to store files using unique names during  get
610              operations.
611
612       symlink [oldfile] [newfile]
613              Create a symlink to oldfile named newfile on the remote service.
614
615       tcpbuf [size]
616              Set  the  data channel TCP buffer size to size bytes. If size is
617              not given, the current TCP buffer size will be printed.
618
619       versions
620              Prints the versions of all Globus modules being used.
621
622       wait   Toggles whether the client should wait for files to stage before
623              attempting to retrieve them.
624
625
626

IMPROVING FILE TRANSFER PERFORMANCE

628       Use the active command to enable active mode FTP when using NCSA's Uni‐
629       Tree mass storage system if possible since it  will  give  much  better
630       file transfer performance.  When tranferring files over long distances,
631       use a large value (for example, 16777216) for tcpbuf.   When  there  is
632       high  network traffic, you may be able to improve performance using the
633       parallel command to increase the number of parallel data connections to
634       2-4.
635

THIRD-PARTY TRANSFERS

637       In  order  to perform a third-party transfer, you must log into two FTP
638       servers. Typically, you connect to a single FTP service to "get"  files
639       to the local machine and "put" files to the remote service.  For third-
640       party transfers, you must connect to a second service thereby replacing
641       the  former local machine. In UberFTP terminology, it is referred to as
642       "opening a new local service" since, from the perspective of the  user,
643       the  new local service will appear as though the user initiated the FTP
644       session from that machine.
645
646       All remote service commands have "l*" counterparts that  allow  you  to
647       specify  that  the  command  is  to  be performed on the local service,
648       whether that service is the local machine or a new local  service.   So
649       to open a new local service, use the "l*" version of the open command:
650
651         UberFTP> lopen mss.ncsa.teragrid.org
652         UberFTP> lclose
653
654       Once  you  have connected to both services, files can be transferred as
655       before with the change that files you "get" go to the new local service
656       and files you "put" are sent from the new local service.
657

CONTROLLING EPHEMERAL PORT SELECTION

659       By  default,  local  port selection is managed by the operating system.
660       However, you may wish to specify which ports  UberFTP  should  use  for
661       incoming  and  out  going connections. This is useful when dealing with
662       firewalls.
663
664       Setting UBERFTP_TCP_PORT_RANGE  in  your  environment  will  cause  all
665       inbound  connections to use the specified port range. Likewise, setting
666       UBERFTP_TCP_SOURCE_RANGE in your environment will  cause  all  outbound
667       connections to use the specified port range.
668
669       The      environment      variables      GLOBUS_TCP_PORT_RANGE      and
670       GLOBUS_TCP_SOURCE_RANGE will also control the ephemeral port selection.
671       These  variables  behave  exactly as their UBERFTP counterparts and are
672       available for backwards compatibility with older versions. The  UBERFTP
673       variables take precedence over the GLOBUS variables.
674
675       The values of the variables specify a port range, a minimum port number
676       and a maximum port number, separated by either a comma or a space.  For
677       example, to set the inbound port range, you would set:
678
679         UBERFTP_TCP_PORT_RANGE=40000,50000
680
681       Using the space delimiter, this format is also acceptable:
682
683         UBERFTP_TCP_PORT_RANGE="40000 50000"
684
685       See  your  shell documentation for the proper syntax for settings vari‐
686       ables within your environment.
687
688       Setting the ephemeral port  range  to  an  unusable  range  will  cause
689       UberFTP connections to fail. For instance, setting a port range from 10
690       to 100 with a non root process will fail on most operating systems.
691
692

EXIT VALUES

694       UberFTP will exit with a value of 0 if no errors  occurred  during  the
695       session,  otherwise it will exit with a value of 1. In non interactive,
696       commandline mode, it will exit after the first error occurs.
697

EXAMPLES

699       Set the environment variable to set  active  mode  FTP  (improves  file
700       transfer  performance  to  the mass storage system).  Connect to NCSA's
701       UniTree mass storage system interactively from NCSA's TeraGrid cluster:
702
703         setenv UBERFTP_ACTIVE_MODE on
704         % uberftp mss.ncsa.teragrid.org
705         ...
706         220 UNIX Archive FTP server ready.
707         230 User consult logged in.
708         UberFTP>
709
710       Use the command-line interface to copy  a  file  from  NCSA's  TeraGrid
711       cluster  to  the  UniTree mass storage system. (There is no need to set
712       tcpbuf since it is over a LAN but active mode is turned on  to  improve
713       file transfer performance to the mass storage system.):
714
715         uberftp mss.ncsa.teragrid.org \
716            "active; cd work; get file.tar"
717
718       Copy  a  file  from SDSC's TeraGrid cluster to NCSA's TeraGrid cluster.
719       (Note that tcpbuf is set to 16777216 since  there  is  a  long  network
720       latency between NCSA and SDSC):
721
722         uberftp tg-gridftp.sdsc.teragrid.org \
723            "tcpbuf 16777216; cd scr; put file.tar"
724

SEE ALSO

726       mssftp(1), msscmd(1), ftp(1),
727       GridFTP:
728         http://www.globus.org/datagrid/gridftp.html
729       TCP Window Size:
730         http://dast.nlanr.net/Articles/GettingStarted/TCP_window_size.html
731       Active vs. Passive FTP:
732         http://slacksite.com/other/ftp.html
733
734       Note:  The  links above are not under NCSA's control so they may become
735       obsolete.
736
737
738
739
740                                  16 May 2008                      UBERFTP(1C)
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