[Shell] determine the directory Read and Write Permissions

Learn shell exercises

Check whether the/tmp/lzz directory has the read/write permission. If not, add the permission.

#!/bin/bash#name: testdir.sh#authro: orangleliu#date: 2014-08-03#version: v1.0#===================TestDir="/tmp/lzz"#===================#function -> Chenck_Dir()#===================Check_Dir(){if [ -d "$TestDir" ]then    TW=`ls -ld /tmp/lzz/|awk '{print $1}'|sed 's/d//g'|grep 'w'|wc -l`    TR=`ls -ld /tmp/lzz/|awk '{print $1}'|sed 's/d//g'|grep 'r'|wc -l`    if [ "$TW" -ne 0 -a "$TR" -ne 0 ]    then        echo "$TestDir can writted and readed !"    else        echo "$TestDir can not writted and readed !"        echo -n "Do you add write and rend authority [Y|N]"        read tt        case $tt in            Y|y)            chmod 755 $TestDir                if [ $? -eq 0 ]                then                    echo "add write and read authority ok ...."                else                    echo "add write add read authority fail...."                    return 1                fi            ;;            N|n)                return 1            ;;            *)                echo "error"                return 1            ;;        esac    fielse    echo "not have this dir"    return 1fi}#======================#function -> Main()#=====================Main(){Check_Dir    if [ $? -eq 1 ]    then    exit 1    fi}Main

This article is from the "orangleliu notebook" blog, please be sure to keep this http://blog.csdn.net/orangleliu/article/details/38367237