3 ms·

> Is that possible with shell [...] #!/bin/bash set -eu <actual work> Explained: -e Exit immediately if a simple command exits with a non-zero status,

> Is that possible with shell [...] #!/bin/bash set -eu <actual work> Explained: -e Exit immediately if a simple command exits with a non-zero status, unless the command that fails is part of an until or while loop, part of an if statement, part of a && or || list, or if the command's return status is being inverted using !. -o errexit -u Treat unset variables as an error when performing parameter expansion. An error message will be written to the standard error, and a non-interactive shell will exit. -o nounset Worth a read: http://ss64.com/bash/set.html http://ss64.com/bash/set.html

mioelnir 11y ago
There is also the variable-expansion abort, even with optional custom error message: "${VAR:?Error message goes here}" Will exit2 if VAR is unset or the empty string. Or, which I often use, build the path you want to delete, call realpath on it - then check if your base directory you never ever have any business leaving is a prefix string of the realpath resolved path. This still allows to symlink stuff into subdirectories but will catch if something resolves suddenly all over the place.