名稱：tr ### 1.比方說要把目錄下所有的大寫檔名換為小寫檔名? 似乎有很多方式，"tr"是其中一種: #!/bin/sh dir="/tmp/testdir"; files=`find $dir -type f`; for i in $files do dir_name=`dirname $i`; ori_filename=`basename $i` new_filename=`echo $ori_filename tr [:upper:] [:lower:]` > /dev/null; #echo $new_filename; mv $dir_name/$ori_filename $dir_name/$new_filename done ### 2.自己試驗中...lowercase to uppercase tr abcdef...[del] ABCDE...[del] tr a-z A-Z tr '[:lower:]' '[:upper:]' shell>> echo "this is a test" tr a-z A-Z > www shell>> cat www THIS IS A TEST ### 3.去掉不想要的字串 shell>> tr -d this ### 去掉有關 t.e.s.t this man man test e ### 4.取代字串 shell>> tr -s "this" "TEST" this TEST th TE
