Shell Builtins

alias

https://man7.org/linux/man-pages/man1/alias.1p.html

• Allowed standalone flags: -p
• Bare invocation allowed
• Hyphen-prefixed positional arguments accepted

bash / sh

https://www.gnu.org/software/bash/manual/bash.html

• Allowed: –version, –help, bash -c / sh -c with a safe inner command.

break / continue

https://www.gnu.org/software/bash/manual/bash.html#index-break

• Bare invocation or a single non-negative integer level (e.g. break, break 2).

command

https://man7.org/linux/man-pages/man1/command.1p.html

• Requires -v, -V, –version. - Allowed standalone flags: –help, –version, -h
• Allowed valued flags: -v, -V

declare

https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html

Aliases: typeset

• Allowed standalone flags: -A, -F, -a, -f, -g, -i, -l, -n, -p, -r, -t, -u, -x
• Bare invocation allowed
• Hyphen-prefixed positional arguments accepted

exit

https://man7.org/linux/man-pages/man1/exit.1p.html

• Bare invocation allowed
• Hyphen-prefixed positional arguments accepted

export

https://man7.org/linux/man-pages/man1/export.1p.html

• Allowed standalone flags: -f, -n, -p
• Bare invocation allowed
• Hyphen-prefixed positional arguments accepted

false

https://www.gnu.org/software/coreutils/manual/coreutils.html#false-invocation

• Allowed standalone flags: –help, –version, -V, -h
• Bare invocation allowed

hash

https://man7.org/linux/man-pages/man1/hash.1p.html

• Allowed standalone flags: -d, -l, -r, -t
• Allowed valued flags: -p
• Bare invocation allowed
• Hyphen-prefixed positional arguments accepted

hostname

https://man7.org/linux/man-pages/man1/hostname.1.html

• Allowed standalone flags: –help, –version, -A, -I, -V, -d, -f, -h, -i, -s
• Bare invocation allowed

printenv

https://www.gnu.org/software/coreutils/manual/coreutils.html#printenv-invocation

• Allowed standalone flags: –help, –null, –version, -0, -V, -h
• Bare invocation allowed

read

https://pubs.opengroup.org/onlinepubs/9799919799/utilities/read.html

• Allowed standalone flags: -r, -s
• Allowed valued flags: -a, -d, -n, -p, -t, -u
• Bare invocation allowed
• Hyphen-prefixed positional arguments accepted

true

https://www.gnu.org/software/coreutils/manual/coreutils.html#true-invocation

• Allowed standalone flags: –help, –version, -V, -h
• Bare invocation allowed

type

https://man7.org/linux/man-pages/man1/type.1p.html

• Allowed standalone flags: –help, –version, -P, -V, -a, -f, -h, -p, -t

unset

https://man7.org/linux/man-pages/man1/unset.1p.html

• Allowed standalone flags: –help, –version, -V, -f, -h, -n, -v
• Bare invocation allowed

wait

https://pubs.opengroup.org/onlinepubs/9799919799/utilities/wait.html

• Allowed standalone flags: –help, –version, -V, -h
• Bare invocation allowed

whereis

https://man7.org/linux/man-pages/man1/whereis.1.html

• Allowed standalone flags: –help, –version, -V, -b, -h, -l, -m, -s, -u
• Allowed valued flags: -B, -M, -S, -f

which

https://man7.org/linux/man-pages/man1/which.1.html

• Allowed standalone flags: –all, –help, –version, -V, -a, -h, -s

whoami

https://www.gnu.org/software/coreutils/manual/coreutils.html#whoami-invocation

• Allowed standalone flags: –help, –version, -V, -h
• Bare invocation allowed

xargs

https://www.gnu.org/software/findutils/manual/html_mono/find.html#Invoking-xargs

• Recursively validates the inner command. Skips xargs-specific flags (-I, -L, -n, -P, -s, -E, -d, -0, -r, -t, -p, -x).