给当前文件夹下所有文件添加.bak后缀
SHELL
1ll | awk '{print $9}' | grep -v '^[ ]*$' |sed -r 's#(.*)#mv \1 \1.bak#g'|bashll | awk '{print $9}' | grep -v '^[ ]*$' |sed -r 's#(.*)#mv \1 \1.bak#g'|bash把当前文件夹下所有.bak后缀的文件，将.bak后缀删掉，并替换
SHELL
1ll | awk '{print $9}' | grep -v '^[ ]*$' |sed -r 's#((.*)\.bak)#mv \1 \2#g' | bashll | awk '{print $9}' | grep -v '^[ ]*$' |sed -r 's#((.*)\.bak)#mv \1 \2#g' | bash