in Bash you can set -x to enable debugging, is there any way to know if that has been set or not from within the script?
Use the following:
if [[ "$-" == *x* ]]; then echo "is set"else echo "is not set"fiFrom 3.2.5. Special parameters:
A hyphen expands to the current option flags as specified upon invocation, by the set built-in command, or those set by the shell itself (such as the -i).
Just for the sake of completeness, here are the two re-usable functions:
is_shell_attribute_set() { # attribute, like "x" case "$-" in *"$1"*) return 0 ;; *) return 1 ;; esac}is_shell_option_set() { # option, like "pipefail" case "$(set -o | grep "$1")" in *on) return 0 ;; *) return 1 ;; esac}Usage example:
set -xif is_shell_attribute_set e; then echo "yes"; else echo "no"; fi # yesset +xif is_shell_attribute_set e; then echo "yes"; else echo "no"; fi # noset -o pipefailif is_shell_option_set pipefail; then echo "yes"; else echo "no"; fi # noset +o pipefailif is_shell_option_set pipefail; then echo "yes"; else echo "no"; fi # no