#!/bin/sh# Convert an ls-style permission string, like drwxr----x and -rw-r-x-wx# to the equivalent chmod --mode (-m) argument, (=,u=rwx,g=r,o=x and# =,u=rw,g=rx,o=wx).case $# in  1) rwx=$1;;  *) echo "$0: wrong number of arguments" 1>&2    echo "Usage: $0 ls-style-mode-string" 1>&2    exit 1;;esaccase $rwx in  [ld-][rwx-][rwx-][rwxsS-][rwx-][rwx-][rwxsS-][rwx-][rwx-][rwxtT-]) ;;  *) echo "$0: invalid mode string: $rwx" 1>&2; exit 1;;esac# Perform these conversions:# S  s# s  xs# T  t# t  xt# The `T' and `t' ones are only valid for `other'.s='s/S/@/;s/s/x@/;s/@/s/'t='s/T/@/;s/t/x@/;s/@/t/'u=`echo $rwx|sed 's/^.\(...\).*/,u=\1/;s/-//g;s/^,u=$//;'$s`g=`echo $rwx|sed 's/^....\(...\).*/,g=\1/;s/-//g;s/^,g=$//;'$s`o=`echo $rwx|sed 's/^.......\(...\).*/,o=\1/;s/-//g;s/^,o=$//;'$s';'$t`echo "=$u$g$o"exit 0