jk_cp(8)

Usage

jk_cp -j jail source

jk_cp -v -k -f -j jail source

Overview

jk_cp will copy any file into a jail on the identical location, with identical permissions and (if required) including any required libraries. It will remove any set user id (setuid) or set group id (setgid) permissions from all files and directories copied.

Examples

jk_cp -j /home/testchroot /usr/bin/cvs

will copy /usr/bin/cvs to /home/testchroot/usr/bin/cvs, and it will copy the libraries used by cvs also to the jail.

jk_cp -k -j /svr/testjail /usr/bin/firefox /usr/share/firefox

will hardlink /usr/bin/firefox and all files in /usr/share/firefox into jail /svr/testjail

Options

-j --jail: The destination jail. If no jail is specified, the first argument is used as jail for backwards compatibility

-f --force: Force overwriting of existing files

-k --hardlink: Try to create hardlinks instead of copying the files. If linking fails it falls back to copying.

-o --owner: Retains the file ownership and group when copying files and directories.

-v --verbose: Will give verbose output

-h --help: The help screen

Releases

Unchanged in 3 releases since Debian 11 (Bullseye).

11–13

jailkit(8) jk_check(8) a utility that will check a jail for security problems jk_chrootlaunch(8) a launcher that can start a daemon in a jail, with a specified uid and gid jk_chrootsh(8) a shell that will put the user inside a changed root jk_init(8) a utility to quicky create functional jail directories jk_jailuser(8) a utility to put an existing user in a jail jk_list(8) a utility to list all processes in a chroot jail jk_lsh(8) a shell that limits the binaries it will execute jk_procmailwrapper(8) jk_socketd(8) a daemon to create a rate-limited /dev/log socket inside a chroot jk_uchroot(8) grant regular users the right to change root into certain directories jk_update(8) a utility to update and cleanup a jail according to changes on the real system chroot(2) change root directory

Referred to by

jk_lsh(8) a shell that limits the binaries it will execute jk_init(8) a utility to quicky create functional jail directories jk_list(8) a utility to list all processes in a chroot jail jk_check(8) a utility that will check a jail for security problems jk_update(8) a utility to update and cleanup a jail according to changes on the real system jk_socketd(8) a daemon to create a rate-limited /dev/log socket inside a chroot jk_uchroot(8) grant regular users the right to change root into certain directories jk_chrootsh(8) a shell that will put the user inside a changed root jk_jailuser(8) a utility to put an existing user in a jail jk_chrootlaunch(8) a launcher that can start a daemon in a jail, with a specified uid and gid jailkit(7) utilities for jailing a user or process