NAME
chroot —
change root directory
SYNOPSIS
chroot |
[-u user]
[-g group]
[-G group,group,...]
newroot [command] |
DESCRIPTION
Thechroot utility changes its current and root
directories to the supplied directory newroot and then
exec's command, if supplied, or an interactive copy of
the user's login shell.
If the -u,
-g or -G options are given,
the user, group and group list of the process are set to these values after
the chroot()
has taken place.
ENVIRONMENT
The following environment variable is referenced by
chroot:
SHELL- If set, the string specified by
SHELLis interpreted as the name of the shell to exec. If the variableSHELLis not set, /bin/sh is used.
SEE ALSO
chdir(2), chroot(2), setgid(2), setgroups(2), setuid(2), getgrnam(3), environ(7), jail(8)
HISTORY
The chroot utility first appeared in
4.4BSD.