.\" -*- nroff -*- .TH ISCHROOT 1 "30 May 2011" "Debian" .SH NAME ischroot \- detect if running in a chroot .SH SYNOPSIS .B ischroot [\-\-default\-false] [\-\-default\-true] [\-\-help] [\-\-version] .SH DESCRIPTION .PP .B ischroot detects if it is currently running in a chroot. The exit status is: .TP 0 if currently running in a chroot .TP 1 if currently not running in a chroot .TP 2 if the detection is not possible (On GNU/Linux this happens if the script is not run as root). .SH OPTIONS .TP .B "-f, --default-false " Exit with status 1 if the detection is not possible. .TP .B "-t, --default-true " Exit with status 0 if the detection is not possible. .TP .B "--help" Print a usage message on standard output and exit successfully. .TP .B "--version" Print version information on standard output and exit successfully. .SH BUGS On GNU/Linux, chroot detection is not possible when not root. This works correctly on GNU/Hurd and GNU/kFreeBSD.