From: Steven Baltakatei Sandoval Date: Wed, 19 Jan 2022 21:23:23 +0000 (+0000) Subject: feat(user/chmoddirbr):Add script to perform chmod on dir branch X-Git-Tag: 0.5.0~19^2~1 X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/commitdiff_plain/1d73b96ff9ce0f6e5f47b7404109f8f9cd7b2112?ds=sidebyside;hp=--cc feat(user/chmoddirbr):Add script to perform chmod on dir branch --- 1d73b96ff9ce0f6e5f47b7404109f8f9cd7b2112 diff --git a/user/chmoddirbr b/user/chmoddirbr new file mode 100644 index 0000000..6959c13 --- /dev/null +++ b/user/chmoddirbr @@ -0,0 +1,88 @@ +#!/usr/bin/env bash +# Desc: Applies chmod to a segment of a directory branch of the +# filesystem tree. Changes applied to all directories starting with +# TIP and ending with (but not including) TRUNK. + +# Usage: chmoddirbr [path TRUNK] [path TIP] +# Input: arg1: TRUNK path +# arg2: TIP path +# arg3+ arguments to be passed on to chmod +# Output: None. +# Depends: GNU Coreutils 8.30 (chmod), Bash 5.0.3 + +# Example: chmoddirbr /tmp /tmp/1/2/3/4/5/6 o+rx +# This runs `chmod o+rx /tmp/1/2/3/4/5/6` +# `chmod o+rx /tmp/1/2/3/4/5` +# `chmod o+rx /tmp/1/2/3/4` +# ... +# `chmod o+rx /tmp/1` + +yell() { echo "$0: $*" >&2; } # print script path and all args to stderr +die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status +try() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails +main() { + declare -a chmod_args + declare -a dirs_branch + + arg1="$1"; shift; + arg2="$1"; shift; + chmod_args=("$@"); + + #yell "DEBUG:arg1:$arg1"; + #yell "DEBUG:arg2:$arg2"; + #yell "DEBUG:chmod_args:${chmod_args[@]}"; + + # Check input dirs + if [[ -d $arg1 ]]; then + dir_trunk="$(readlink -f "$arg1")"; # use full path + #yell "DEBUG:dir_trunk:$dir_trunk"; + else + die "ERROR:TRUNK is not a dir:$arg1"; + fi; + if [[ -d $arg2 ]]; then + dir_tip="$(readlink -f "$arg2")"; # use full path + #yell "DEBUG:dir_tip :$dir_tip"; + else + die "ERROR:TIP is not a dir:$arg2"; + fi; + + # Check if $dir_trunk points to $dir_tip + if [[ $dir_tip =~ ^"$dir_trunk" ]]; then + : + #yell "DEBUG:Tip is within trunk."; + else + yell "NOTE:dir_trunk:$dir_trunk"; + yell "NOTE:dir_tip :$dir_tip"; + die "ERROR:Tip is not within trunk."; + fi; + + # Assemble dirs_branch array + ## Note: dirs_branch will not include $dir_trunk + point="$dir_tip"; + while [[ $point != $dir_trunk ]]; do + #yell "DEBUG:start point :$point"; + #yell "DEBUG:start dir_trunk:$dir_trunk"; + dirs_branch+=("$point"); + + # Walk up branch + point="$(dirname "$point")"; + #yell "DEBUG:end point :$point"; + #yell "DEBUG:end dir_trunk:$dir_trunk"; + #yell ""; # debug + done; + unset point; + #yell "DEBUG:${dirs_branch[@]}"; + + # Perform action + n=0; + for dir in "${dirs_branch[@]}"; do + yell "STATUS:$((n+1)):Running: chmod $chmod_args $dir"; + try chmod "$chmod_args" "$dir" && ((n++)); + done; + yell "STATUS:Finished. Ran chmod $((n)) times."; +} # main program + +main "$@"; + +# Author: Steven Baltakatei Sandoval +# License: GPLv3+