轉換Mac OS X的Linux Shell腳本

Question

我們如何轉換下面的Shell腳本，以便在Mac OS X上可以達到相同的結果？

# To generate secure SSH deploy key for a github repo to be used from Travis
# https://gist.github.com/floydpink/4631240
base64 --wrap=0 ~/.ssh/id_rsa_deploy > ~/.ssh/id_rsa_deploy_base64
ENCRYPTION_FILTER="echo \$(echo \"- secure: \")\$(travis encrypt \"\$FILE='\`cat $FILE\`'\" -r floydpink/harimenon.com)"
split --bytes=100 --numeric-suffixes --suffix-length=2 --filter="$ENCRYPTION_FILTER" ~/.ssh/id_rsa_deploy_base64 id_rsa_

# To reconstitute the private SSH key once running inside Travis (typically from 'before_script')
echo -n $id_rsa_{00..30} >> ~/.ssh/id_rsa_base64
base64 --decode --ignore-garbage ~/.ssh/id_rsa_base64 > ~/.ssh/id_rsa
chmod 600 ~/.ssh/id_rsa
echo -e "Host github.com\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config

我可以找出等效的base64命令為：

base64 --break=0 id_rsa_deploy > id_rsa_deploy_base64

但是，看起來Mac OS X上的split命令與Linux / Unix有點不同，並且沒有--filter選項。

編輯：這是我從該博客條目中偶然發現的要點 ，其中詳細介紹了如何使用Travis CI將Octopress博客自動部署到GitHub。

我已經在Ubuntu Linux上成功完成了此操作，並且過去也曾對此進行過博客撰寫 ，但無法在Mac上重復。

Answer 1

您可能需要從brew （OS X缺少的軟件包管理器）安裝core-utils，然后使用gsplit ：

$ brew install coreutils
$ gsplit --help
Usage: gsplit [OPTION]... [INPUT [PREFIX]]
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default
size is 1000 lines, and default PREFIX is 'x'.  With no INPUT, or when INPUT
is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.
  -a, --suffix-length=N   generate suffixes of length N (default 2)
      --additional-suffix=SUFFIX  append an additional SUFFIX to file names.
  -b, --bytes=SIZE        put SIZE bytes per output file
  -C, --line-bytes=SIZE   put at most SIZE bytes of lines per output file
  -d, --numeric-suffixes[=FROM]  use numeric suffixes instead of alphabetic.
                                   FROM changes the start value (default 0).
  -e, --elide-empty-files  do not generate empty output files with '-n'
      --filter=COMMAND    write to shell COMMAND; file name is $FILE
  -l, --lines=NUMBER      put NUMBER lines per output file
  -n, --number=CHUNKS     generate CHUNKS output files.  See below
  -u, --unbuffered        immediately copy input to output with '-n r/...'
      --verbose           print a diagnostic just before each
                            output file is opened
      --help     display this help and exit
      --version  output version information and exit