Usage:
 nsenter [options] [<program> [<argument>...]]

Run a program with namespaces of other processes.

Options:
 -a, --all                     enter all namespaces
 -t, --target <PID>            target process to get namespaces from
 -m, --mount[=<file>|=:<nsid>] enter mount namespace
 -u, --uts[=<file>|=:<nsid>]   enter UTS namespace (hostname etc)
 -i, --ipc[=<file>|=:<nsid>]   enter System V IPC namespace
 -n, --net[=<file>|=:<nsid>]   enter network namespace
 -N, --net-socket <fd>         enter socket's network namespace (needs --target)
 -p, --pid[=<file>|=:<nsid>]   enter pid namespace
 -C, --cgroup[=<file>|=:<nsid>]  enter cgroup namespace
 -U, --user[=<file>|=:<nsid>]  enter user namespace
     --user-parent             enter parent user namespace
 -T, --time[=<file>|=:<nsid>]  enter time namespace
 -S, --setuid[=<uid>]          set uid in entered namespace
 -G, --setgid[=<gid>]          set gid in entered namespace
     --preserve-credentials    do not touch uids or gids
     --keep-caps               retain capabilities granted in user namespaces
 -r, --root[=<dir>]            set the root directory
 -w, --wd[=<dir>]              set the working directory
 -W, --wdns <dir>              set the working directory in namespace
 -e, --env                     inherit environment variables from target process
 -F, --no-fork                 do not fork before exec'ing <program>
 -c, --join-cgroup             join the cgroup of the target process
 -Z, --follow-context          set SELinux context according to --target PID

 -h, --help                    display this help
 -V, --version                 display version

For more details see nsenter(1).