#Bash 的 base64 命令

1base64 [OPTION]... [FILE]...
2

功能

进行 BASE64 编码或解码。

类型

可执行文件（/usr/bin/base64），属于 coreutils。

参数

OPTION 选项：
- -d, --decode - 解码；不带此选项则为编码
- -i, --ignore-garbage - 解码时忽略无效字符
- -w, --wrap=COLS - 编码输出时一行的字符数；默认为 76，设为 0 则不换行
- --help - 显示帮助
- --version - 显示版本
FILE - 文件列表

#示例

1$ man base64 > 1.txt
2$ cat 1.txt
3BASE64(1)                        User Commands                       BASE64(1)
4
5NAME
6       base64 - base64 encode/decode data and print to standard output
7
8SYNOPSIS
9       base64 [OPTION]... [FILE]
10...
11$ base64 1.txt > 2.txt      # 编码
12$ cat 2.txt
13QkFTRTY0KDEpICAgICAgICAgICAgICAgICAgICAgICAgVXNlciBDb21tYW5kcyAgICAgICAgICAg
14ICAgICAgICAgICAgQkFTRTY0KDEpCgpOQU1FCiAgICAgICBiYXNlNjQgLSBiYXNlNjQgZW5jb2Rl
15L2RlY29kZSBkYXRhIGFuZCBwcmludCB0byBzdGFuZGFyZCBvdXRwdXQKClNZTk9QU0lTCiAgICAg
16ICBiYXNlNjQgW09QVElPTl0uLi4gW0ZJTEVdCgpERVNDUklQVElPTgogICAgICAgQmFzZTY0IGVu
17...
18$ base64 -d 2.txt           # 解码
19BASE64(1)                        User Commands                       BASE64(1)
20
21NAME
22       base64 - base64 encode/decode data and print to standard output
23
24SYNOPSIS
25       base64 [OPTION]... [FILE]
26...
27

#相关命令

命令	说明
base32	进行 BASE32 编码或解码
basenc	进行 BASE2 BASE16 BASE32 BASE64 编码或解码

#推荐阅读

#手册

显示

1BASE64(1)                        User Commands                       BASE64(1)
2
3NAME
4       base64 - base64 encode/decode data and print to standard output
5
6SYNOPSIS
7       base64 [OPTION]... [FILE]
8
9DESCRIPTION
10       Base64 encode or decode FILE, or standard input, to standard output.
11
12       With no FILE, or when FILE is -, read standard input.
13
14       Mandatory  arguments  to  long  options are mandatory for short options
15       too.
16
17       -d, --decode
18              decode data
19
20       -i, --ignore-garbage
21              when decoding, ignore non-alphabet characters
22
23       -w, --wrap=COLS
24              wrap encoded lines after COLS character (default 76).  Use 0  to
25              disable line wrapping
26
27       --help display this help and exit
28
29       --version
30              output version information and exit
31
32       The  data are encoded as described for the base64 alphabet in RFC 4648.
33       When decoding, the input may contain newlines in addition to the  bytes
34       of  the formal base64 alphabet.  Use --ignore-garbage to attempt to re‐
35       cover from any other non-alphabet bytes in the encoded stream.
36
37AUTHOR
38       Written by Simon Josefsson.
39
40REPORTING BUGS
41       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
42       Report any translation bugs to <https://translationproject.org/team/>
43
44COPYRIGHT
45       Copyright © 2023 Free Software Foundation, Inc.   License  GPLv3+:  GNU
46       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
47       This  is  free  software:  you  are free to change and redistribute it.
48       There is NO WARRANTY, to the extent permitted by law.
49
50SEE ALSO
51       basenc(1)
52
53       Full documentation <https://www.gnu.org/software/coreutils/base64>
54       or available locally via: info '(coreutils) base64 invocation'
55
56GNU coreutils 9.4                 April 2024                         BASE64(1)
57

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