man > ischroot(1)

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📛 NAME

ischroot - detect if running in a chroot

🚀 Quick Reference

Use Case	Command	Description
Check if inside chroot	ischroot	Exits 0 in chroot, 1 otherwise
Default false on detection failure	ischroot --default-false	Exits 1 if detection impossible
Default true on detection failure	ischroot --default-true	Exits 0 if detection impossible
Show help	ischroot --help	Display usage message
Show version	ischroot --version	Print version information

📖 SYNOPSIS

ischroot [--default-false] [--default-true] [--help] [--version]

📝 DESCRIPTION

ischroot detects if it is currently running in a chroot. The exit status is:

• 0 — currently running in a chroot
• 1 — currently not running in a chroot
• 2 — detection impossible (on GNU/Linux this happens if not run as root)

🚪 Exit Codes

• 0 — running in a chroot
• 1 — not running in a chroot
• 2 — detection not possible

⚙️ OPTIONS

🔹 -f, --default-false

Exit with status 1 if the detection is not possible.

🔹 -t, --default-true

Exit with status 0 if the detection is not possible.

🔹 --help

Print a usage message on standard output and exit successfully.

🔹 --version

Print version information on standard output and exit successfully.

🐞 BUGS

On GNU/Linux, chroot detection is not possible when not root. This works correctly on GNU/Hurd and GNU/kFreeBSD.

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Debian 30 May 2011 ISCHROOT(1)

📛 NAME 🚀 Quick Reference 📖 SYNOPSIS 📝 DESCRIPTION 🚪 Exit Codes ⚙️ OPTIONS 🐞 BUGS