mirror of
https://github.com/ivuorinen/dotfiles.git
synced 2026-01-26 11:14:08 +00:00
51 lines
1.4 KiB
Bash
Executable File
51 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# Optimized script to batch prepend directories to PATH.
|
|
# For each given directory, it removes all duplicate occurrences from PATH
|
|
# and then prepends it. Directories that do not exist are skipped.
|
|
#
|
|
# Usage: x-path-prepend <directory1> [<directory2> ...]
|
|
#
|
|
# Enable verbose output by setting the environment variable VERBOSE=1.
|
|
#
|
|
# Author: Ismo Vuorinen <https://github.com/ivuorinen> 2024
|
|
# License: MIT
|
|
|
|
VERBOSE="${VERBOSE:-0}"
|
|
|
|
# Ensure that at least one argument is provided.
|
|
[ "$#" -lt 1 ] && {
|
|
echo "Usage: $0 <directory> [<directory> ...]"
|
|
exit 1
|
|
}
|
|
|
|
# Save the arguments in an array.
|
|
dirs=("$@")
|
|
|
|
# Process the directories in reverse order so that the first argument ends up leftmost in PATH.
|
|
for ((idx = ${#dirs[@]} - 1; idx >= 0; idx--)); do
|
|
dir="${dirs[idx]}"
|
|
|
|
# Check if the specified directory exists.
|
|
if [ ! -d "$dir" ]; then
|
|
[ "$VERBOSE" -eq 1 ] && echo "(?) Directory '$dir' does not exist. Skipping."
|
|
continue
|
|
fi
|
|
|
|
# Remove all duplicate occurrences of the directory from PATH using built-in string operations.
|
|
case ":$PATH:" in
|
|
*":$dir:"*)
|
|
PATH=":${PATH}:"
|
|
PATH="${PATH//:$dir:/:}"
|
|
PATH="${PATH#:}"
|
|
PATH="${PATH%:}"
|
|
[ "$VERBOSE" -eq 1 ] && echo "Removed duplicate occurrences of '$dir' from PATH."
|
|
;;
|
|
*) ;;
|
|
esac
|
|
|
|
# Prepend the directory to PATH.
|
|
export PATH="$dir${PATH:+":$PATH"}"
|
|
[ "$VERBOSE" -eq 1 ] && echo "Prepended '$dir' to PATH."
|
|
done
|