podman-container-exec(1)

1podman-exec(1)()                                              podman-exec(1)()
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NAME

6       podman-exec - Execute a command in a running container
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SYNOPSIS

10       podman exec [options] container [command [arg ...]]
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13       podman container exec [options] container [command [arg ...]]
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DESCRIPTION

17       podman exec executes a command in a running container.
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OPTIONS

21       --detach-keys=sequence
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24       Specify  the key sequence for detaching a container. Format is a single
25       character [a-Z] or one or more ctrl-<value> characters where <value> is
26       one  of: a-z, @, ^, [, , or _. Specifying "" will disable this feature.
27       The default is ctrl-p,ctrl-q.
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30       --env, -e
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33       You may specify arbitrary environment variables that are available  for
34       the command to be executed.
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37       --env-file=file
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40       Read in a line delimited file of environment variables.
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43       --interactive, -i=true|false
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46       When  set to true, keep stdin open even if not attached. The default is
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50       --latest, -l
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53       Instead of providing the container name or ID,  use  the  last  created
54       container.  If you use methods other than Podman to run containers such
55       as CRI-O, the last started container could  be  from  either  of  those
56       methods.
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59       The latest option is not supported on the remote client.
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62       --preserve-fds=N
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65       Pass  down to the process N additional file descriptors (in addition to
66       0, 1, 2).  The total FDs will be 3+N.
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69       --privileged
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72       Give extended privileges to this container. The default is false.
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75       By default, Podman containers are "unprivileged" and cannot, for  exam‐
76       ple,  modify parts of the operating system.  This is because by default
77       a container is only allowed limited access to devices.  A  "privileged"
78       container is given the same access to devices as the user launching the
79       container.
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82       A privileged container turns off the security features that isolate the
83       container   from  the  host.  Dropped  Capabilities,  limited  devices,
84       read/only mount points, Apparmor/SELinux separation, and  Seccomp  fil‐
85       ters are all disabled.
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88       Rootless  containers  cannot have more privileges than the account that
89       launched them.
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92       --tty, -t
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95       Allocate a pseudo-TTY.
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98       --user, -u
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101       Sets the username or UID used and optionally the groupname or  GID  for
102       the  specified  command.   The following examples are all valid: --user
103       [user | user:group | uid | uid:gid | user:gid | uid:group ]
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106       --workdir, -w=path
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109       Working directory inside the container
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112       The default working directory for running binaries within  a  container
113       is  the  root  directory  (/).  The image developer can set a different
114       default with the WORKDIR instruction, which can be overridden when cre‐
115       ating the container.
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Exit Status

119       The  exit code from podman exec gives information about why the command
120       within the container failed to run or why it exited.  When podman  exec
121       exits  with a non-zero code, the exit codes follow the chroot standard,
122       see below:
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125       125 The error is with Podman itself
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128              $ podman exec --foo ctrID /bin/sh; echo $?
129              Error: unknown flag: --foo
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134       126 The contained command cannot be invoked
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137              $ podman exec ctrID /etc; echo $?
138              Error: container_linux.go:346: starting container process caused "exec: \"/etc\": permission denied": OCI runtime error
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143       127 The contained command cannot be found
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146              $ podman exec ctrID foo; echo $?
147              Error: container_linux.go:346: starting container process caused "exec: \"foo\": executable file not found in $PATH": OCI runtime error
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152       Exit code The contained command exit code
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155              $ podman exec ctrID /bin/sh -c 'exit 3'; echo $?
156              3
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EXAMPLES

161              $ podman exec -it ctrID ls
162              $ podman exec -it -w /tmp myCtr pwd
163              $ podman exec --user root ctrID ls
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HISTORY

172       December 2017,  Originally  compiled  by  Brent  Baudebbaude@redhat.com
173       ⟨mailto:bbaude@redhat.com⟩
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177                                                              podman-exec(1)()