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diff --git a/docs/source/markdown/podman-exec.1.md.in b/docs/source/markdown/podman-exec.1.md.in new file mode 100644 index 000000000..4f78f1c31 --- /dev/null +++ b/docs/source/markdown/podman-exec.1.md.in @@ -0,0 +1,115 @@ +% 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**=*env* + +Set environment variables. + +This option allows arbitrary environment variables that are available for the process to be launched inside of the container. If an environment variable is specified without a value, Podman will check the host environment for a value and set the variable only if it is set on the host. As a special case, if an environment variable ending in __*__ is specified without a value, Podman will search the host environment for variables starting with the prefix and will add those variables to the container. + +#### **--env-file**=*file* + +Read in a line delimited file of environment variables. + +#### **--interactive**, **-i** + +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, including Mac and Windows (excluding WSL2) machines) + +#### **--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 ] + +@@option workdir + +## 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.1.md)**, **[podman-run(1)](podman-run.1.md)** + +## HISTORY +December 2017, Originally compiled by Brent Baude<bbaude@redhat.com> |