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% podman-exec(1)
## NAME
podman\-exec - Execute a command in a running container
## SYNOPSIS
**podman exec** [*options*] *container* [*command* [*arg* ...]]
**podman container exec** [*options*] *container* [*command* [*arg* ...]]
## DESCRIPTION
**podman exec** executes a command in a running container.
## OPTIONS
#### **--detach**, **-d**
Start the exec session, but do not attach to it. The command will run in the background and the exec session will be automatically removed when it completes. The **podman exec** command will print the ID of the exec session and exit immediately after it starts.
#### **--detach-keys**=*sequence*
Specify the key sequence for detaching a container. Format is a single character `[a-Z]` or one or more `ctrl-<value>` characters where `<value>` is one of: `a-z`, `@`, `^`, `[`, `,` or `_`. Specifying "" will disable this feature. The default is *ctrl-p,ctrl-q*.
#### **--env**, **-e**
You may specify arbitrary environment variables that are available for the
command to be executed.
#### **--env-file**=*file*
Read in a line delimited file of environment variables.
#### **--interactive**, **-i**=*true|false*
When set to true, keep stdin open even if not attached. The default is *false*.
#### **--latest**, **-l**
Instead of providing the container name or ID, use the last created container. If you use methods other than Podman
to run containers such as CRI-O, the last started container could be from either of those methods. (This option is not available with the remote Podman client)
#### **--preserve-fds**=*N*
Pass down to the process N additional file descriptors (in addition to 0, 1, 2). The total FDs will be 3+N.
#### **--privileged**
Give extended privileges to this container. The default is *false*.
By default, Podman containers are
"unprivileged" and cannot, for example, modify parts of the operating system.
This is because by default a container is only allowed limited access to devices.
A "privileged" container is given the same access to devices as the user launching the container.
A privileged container turns off the security features that isolate the
container from the host. Dropped Capabilities, limited devices, read/only mount
points, Apparmor/SELinux separation, and Seccomp filters are all disabled.
Rootless containers cannot have more privileges than the account that launched them.
#### **--tty**, **-t**
Allocate a pseudo-TTY.
#### **--user**, **-u**
Sets the username or UID used and optionally the groupname or GID for the specified command.
The following examples are all valid:
--user [user | user:group | uid | uid:gid | user:gid | uid:group ]
#### **--workdir**, **-w**=*path*
Working directory inside the container
The default working directory for running binaries within a container is the root directory (/).
The image developer can set a different default with the WORKDIR instruction, which can be overridden
when creating the container.
## Exit Status
The exit code from `podman exec` gives information about why the command within the container failed to run or why it exited. When `podman exec` exits with a
non-zero code, the exit codes follow the `chroot` standard, see below:
**125** The error is with Podman itself
$ podman exec --foo ctrID /bin/sh; echo $?
Error: unknown flag: --foo
125
**126** The _contained command_ cannot be invoked
$ podman exec ctrID /etc; echo $?
Error: container_linux.go:346: starting container process caused "exec: \"/etc\": permission denied": OCI runtime error
126
**127** The _contained command_ cannot be found
$ podman exec ctrID foo; echo $?
Error: container_linux.go:346: starting container process caused "exec: \"foo\": executable file not found in $PATH": OCI runtime error
127
**Exit code** The _contained command_ exit code
$ podman exec ctrID /bin/sh -c 'exit 3'; echo $?
3
## EXAMPLES
```
$ podman exec -it ctrID ls
$ podman exec -it -w /tmp myCtr pwd
$ podman exec --user root ctrID ls
```
## SEE ALSO
podman(1), podman-run(1)
## HISTORY
December 2017, Originally compiled by Brent Baude<bbaude@redhat.com>
|
