命令
rev
描述
reverse lines of a file or files
反转输出,按列输出
用法
1
| rev [options] [file ...]
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选项
无
注意
无
示例
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| $ echo a b c > a
$ echo 1 2 3 >> a
$ more a
a b c
1 2 3
$ rev a
c b a
3 2 1
$ touch a{1..5}
$ ls
a a1 a2 a3 a4 a5
$ ls |rev
a
1a
2a
3a
4a
5a
$ ll
total 4
-rw-r--r-- 1 root root 6 Feb 13 20:55 a
-rw-r--r-- 1 root root 0 Feb 13 20:55 a1
-rw-r--r-- 1 root root 0 Feb 13 20:55 a2
-rw-r--r-- 1 root root 0 Feb 13 20:55 a3
-rw-r--r-- 1 root root 0 Feb 13 20:55 a4
-rw-r--r-- 1 root root 0 Feb 13 20:55 a5
$ ll |rev
4 latot
a 55:02 31 beF 6 toor toor 1 --r--r-wr-
1a 55:02 31 beF 0 toor toor 1 --r--r-wr-
2a 55:02 31 beF 0 toor toor 1 --r--r-wr-
3a 55:02 31 beF 0 toor toor 1 --r--r-wr-
4a 55:02 31 beF 0 toor toor 1 --r--r-wr-
5a 55:02 31 beF 0 toor toor 1 --r--r-wr-
$ echo "passwd"|rev
dwssap
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