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nsenter — Run a new command in a running process' namespace. Particularly useful for Docker images or chroot j

Submitted by: @import:tldr-pages··
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commandrunnsenternewprocessclirunning
linux

Problem

How to use the nsenter command: Run a new command in a running process' namespace. Particularly useful for Docker images or chroot jails. More information: <https://manned.org/nsenter>.

Solution

nsenter — Run a new command in a running process' namespace. Particularly useful for Docker images or chroot jails. More information: <https://manned.org/nsenter>.

Run a specific command using the same namespaces as an existing process:
nsenter {{[-t|--target]}} {{pid}} {{[-a|--all]}} {{command}} {{command_arguments}}


Run a specific command in an existing process's mount|UTS|IPC|network|PID|user|cgroup|time namespace:
nsenter {{[-t|--target]}} {{pid}} --{{mount|uts|ipc|net|pid|user|cgroup}} {{command}} {{command_arguments}}


Run a specific command in an existing process's UTS, time, and IPC namespaces:
nsenter {{[-t|--target]}} {{pid}} {{[-u|--uts]}} {{[-T|--time]}} {{[-i|--ipc]}} -- {{command}} {{command_arguments}}


Run a specific command in an existing process's namespace by referencing procfs:
nsenter {{[-p|--pid=]}}/proc/{{pid}}/pid/net -- {{command}} {{command_arguments}}

Code Snippets

Run a specific command using the same namespaces as an existing process

nsenter {{[-t|--target]}} {{pid}} {{[-a|--all]}} {{command}} {{command_arguments}}

Run a specific command in an existing process's mount|UTS|IPC|network|PID|user|cgroup|time namespace

nsenter {{[-t|--target]}} {{pid}} --{{mount|uts|ipc|net|pid|user|cgroup}} {{command}} {{command_arguments}}

Run a specific command in an existing process's UTS, time, and IPC namespaces

nsenter {{[-t|--target]}} {{pid}} {{[-u|--uts]}} {{[-T|--time]}} {{[-i|--ipc]}} -- {{command}} {{command_arguments}}

Run a specific command in an existing process's namespace by referencing procfs

nsenter {{[-p|--pid=]}}/proc/{{pid}}/pid/net -- {{command}} {{command_arguments}}

Context

tldr-pages: linux/nsenter

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