1APPLYDELTARPM(8) System Manager's Manual APPLYDELTARPM(8)
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6 applydeltarpm - reconstruct an rpm from a deltarpm
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10 applydeltarpm [-v] [-p] [-r oldrpm] deltarpm newrpm
11 applydeltarpm -c|-C deltarpm
12 applydeltarpm [-c|-C] -s sequence
13 applydeltarpm -i deltarpm
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17 applydeltarpm applies a binary delta to either an old rpm or to on-disk
18 data to re-create a new rpm. The old rpm can be specified with the -r
19 option, if no rpm name is provided on-disk data is used. You can use -p
20 to make applydeltarpm print the percentage of completion, or -v to make
21 it more verbose about its operation.
22 The second an third form can be used to check if the reconstruction is
24 possible. It may fail if the on-disk data got changed (deltarpms are
25 created in a way that config file changes do not matter) or the
26 deltarpm does not match the rpm the delta was generated with. The -c
27 option selects full (i.e. slow) on-disk checking, whereas -C only
28 checks if the filesizes have not changed.
29 Instead of a full deltarpm a sequence id can be given with the -s
31 sequence option. Such an id contains all the information that is needed
32 to do reconstruction checking.
33 Finally information about a deltarpm can be printed with the -i option.
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38 applydeltarpm was written to work on systems with limited memory. It
39 uses a paging algorithm to keep the size of in-core data low and not
40 bring the system in an out-of-memory situation.
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44 applydeltarpm returns 0 if the rpm could be recreated or the checking
45 succeeded, it returns 1 and prints an error message to stderr if some‐
46 thing failed.
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50 makedeltarpm(8), rpm(8)
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54 Michael Schroeder <mls@suse.de>
55 Feb 2005 APPLYDELTARPM(8)