baase64 명령 사용

# エンコード
$ echo -n 'ponsuke:tarou' | base64
cG9uc3VrZTp0YXJvdQ==
# デコード
$ echo 'cG9uc3VrZTp0YXJvdQ==' | base64 -D
ponsuke:tarou
$ base64 --help
Usage:  base64 [-hvD] [-b num] [-i in_file] [-o out_file]
  -h, --help     display this message
  -D, --decode   decodes input # デコードで使ったのはこのオプション
  -b, --break    break encoded string into num character lines
  -i, --input    input file (default: "-" for stdin)
  -o, --output   output file (default: "-" for stdout)

명령 사용

# エンコード
$ echo -n 'ponsuke:tarou' | nkf -M
cG9uc3VrZTp0YXJvdQ==
# デコード
$ echo 'cG9uc3VrZTp0YXJvdQ==' | nkf -mW
ponsuke:tarou
$ nkf --help
Usage:  nkf -[flags] [--] [in file] .. [out file for -O flag]
 j/s/e/w  Specify output encoding ISO-2022-JP, Shift_JIS, EUC-JP
          UTF options is -w[8[0],{16,32}[{B,L}[0]]]
 J/S/E/W  Specify input encoding ISO-2022-JP, Shift_JIS, EUC-JP # デコードで使ったオプション
          UTF option is -W[8,[16,32][B,L]]
 m[BQSN0] MIME decode [B:base64,Q:quoted,S:strict,N:nonstrict,0:no decode] # デコードで使ったオプション
 M[BQ]    MIME encode [B:base64 Q:quoted] # エンコードで使ったオプション
 f/F      Folding: -f60 or -f or -f60-10 (fold margin 10) F preserve nl
 Z[0-4]   Default/0: Convert JISX0208 Alphabet to ASCII
          1: Kankaku to one space  2: to two spaces  3: HTML Entity
          4: JISX0208 Katakana to JISX0201 Katakana
 X,x      Convert Halfwidth Katakana to Fullwidth or preserve it
 O        Output to File (DEFAULT 'nkf.out')
 L[uwm]   Line mode u:LF w:CRLF m:CR (DEFAULT noconversion)
 --ic=<encoding>        Specify the input encoding
 --oc=<encoding>        Specify the output encoding
 --hiragana --katakana  Hiragana/Katakana Conversion
 --katakana-hiragana    Converts each other
 --{cap, url}-input     Convert hex after ':' or '%'
 --numchar-input        Convert Unicode Character Reference
 --fb-{skip, html, xml, perl, java, subchar}
                        Specify unassigned character's replacement
 --in-place[=SUF]       Overwrite original files
 --overwrite[=SUF]      Preserve timestamp of original files
 -g --guess             Guess the input code
 -v --version           Print the version
 --help/-V              Print this help / configuration
Network Kanji Filter Version 2.1.4 (2015-12-12) 
Copyright (C) 1987, FUJITSU LTD. (I.Ichikawa).
Copyright (C) 1996-2015, The nkf Project.

웹 도구 사용

데이터 변환 도구(BASE64, URL 인코딩(URL 디코딩), HEX(16진수 덤프), MD5, SHA-1 변환 양식)

Base64로 인코딩 - 온라인 Base64 인코더

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