Even then most scripts were written in sh rather than csh, however. With user-friendly shells such as bash, zsh, and maybe even tcsh, the old csh is useless to me. More options ...

if [ $# -lt 1 ]; then: This line checks if the number of command-line arguments ($#) is less than 1. If there are no command-line arguments provided when running the script, this condition will be ...

In order to avoid this common mistake I often have my shell scripts prompt me for a yes or no answer before they proceed. The function described here is for doing that: asking a question and ...