79 lines
2.5 KiB
Bash
79 lines
2.5 KiB
Bash
# Some useful commands for setting permissions.
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#
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# Rory Hardy [GneatGeek]
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# Andrew Janke [apjanke]
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### Aliases
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# Set all files' permissions to 644 recursively in a directory
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alias set644='find . -type f ! -perm 644 -print0 | xargs -0 chmod 644'
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# Set all directories' permissions to 755 recursively in a directory
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alias set755='find . -type d ! -perm 755 -print0 | xargs -0 chmod 755'
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### Functions
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# fixperms - fix permissions on files and directories, with confirmation
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# Returns 0 on success, nonzero if any errors occurred
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fixperms () {
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local opts confirm target exit_status chmod_opts use_slow_mode
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zparseopts -E -D -a opts -help -slow v+=chmod_opts
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if [[ $# > 1 || -n "${opts[(r)--help]}" ]]; then
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cat <<EOF
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Usage: fixperms [-v] [--help] [--slow] [target]
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target is the file or directory to change permissions on. If omitted,
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the current directory is taken to be the target.
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-v enables verbose output (may be supplied multiple times)
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--slow will use a slower but more robust mode, which is effective if
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directories themselves have permissions that forbid you from
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traversing them.
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EOF
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exit_status=$(( $# > 1 ))
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return $exit_status
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fi
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if [[ $# == 0 ]]; then
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target="."
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else
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target="$1"
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fi
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if [[ -n ${opts[(r)--slow]} ]]; then use_slow=true; else use_slow=false; fi
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# Because this requires confirmation, bail in noninteractive shells
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if [[ ! -o interactive ]]; then
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echo "fixperms: cannot run in noninteractive shell"
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return 1
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fi
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echo "Fixing perms on $target?"
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printf '%s' "Proceed? (y|n) "
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read confirm
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if [[ "$confirm" != y ]]; then
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# User aborted
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return 1
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fi
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# This xargs form is faster than -exec chmod <N> {} \; but will encounter
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# issues if the directories themselves have permissions such that you can't
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# recurse in to them. If that happens, just rerun this a few times.
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exit_status=0;
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if [[ $use_slow == true ]]; then
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# Process directories first so non-traversable ones are fixed as we go
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find "$target" -type d ! -perm 755 -exec chmod $chmod_opts 755 {} \;
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if [[ $? != 0 ]]; then exit_status=$?; fi
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find "$target" -type f ! -perm 644 -exec chmod $chmod_opts 644 {} \;
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if [[ $? != 0 ]]; then exit_status=$?; fi
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else
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find "$target" -type d ! -perm 755 -print0 | xargs -0 chmod $chmod_opts 755
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if [[ $? != 0 ]]; then exit_status=$?; fi
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find "$target" -type f ! -perm 644 -print0 | xargs -0 chmod $chmod_opts 644
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if [[ $? != 0 ]]; then exit_status=$?; fi
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fi
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echo "Complete"
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return $exit_status
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}
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