Linux明文密码加密方案一（base64命令）

NAME
       base64 - base64 encode/decode data and print to standard output


SYNOPSIS
       base64 [OPTION]... [FILE]


DESCRIPTION
       Base64 encode or decode FILE, or standard input, to standard output.


       Mandatory arguments to long options are mandatory for short options too.


       -d, --decode
              decode data


       -i, --ignore-garbage
              when decoding, ignore non-alphabet characters


       -w, --wrap=COLS
              wrap encoded lines after COLS character (default 76).  Use 0 to disable line wrapping


       --help display this help and exit


       --version
              output version information and exit
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[root@test ~]# echo 'hello_world!' | base64 -i


aGVsbG9fd29ybGQhCg==
[root@test ~]# echo 'hello_world!' | base64


aGVsbG9fd29ybGQhCg==
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[root@test ~]# echo 'aGVsbG9fd29ybGQhCg==' | base64 -d


hello_world!
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