tac命令用法#
tac默认倒序显示文件内容
$ tac push.sh
sleep 3s
echo "Done!"
sleep 3s
git push
git commit -m "update"
git add .
rm -rf resources/ public/ .hugo_build.lock对比下cat的输出
$ cat push.sh
rm -rf resources/ public/ .hugo_build.lock
git add .
git commit -m "update"
git push
sleep 3s
echo "Done!"
sleep 3s可以使用-r -t来使用正则表达式改变输出规则，如下逆序翻转所有字符
$ tac -r -s 'x\|[^x]' push.sh
s3 peels
"!enoD" ohce
s3 peels
hsup tig
"etadpu" m- timmoc tig
. dda tig
kcol.dliub_oguh. /cilbup /secruoser fr- mr