以下情况：
我正在使用运行 OS X 的 Mac 并最近加入了一个项目，该项目的成员到目前为止都使用 Windows。我的首要任务之一是在 Git 存储库中设置代码库，因此我从 FTP 中提取了目录树并尝试将其检入到我在本地准备的 Git 存储库中。当试图这样做时，我得到的只是这个
fatal: CRLF would be replaced by LF in blog/license.txt.
由于这会影响“blog”文件夹下的所有文件，我正在寻找一种方法来方便地将树中的所有文件转换为 Unix 行尾。是否有开箱即用的工具或者我自己编写脚本？
作为参考，我关于行尾的 Git 配置：
core.safecrlf=true
core.autocrlf=input
【问题讨论】：
标签： git line-endings
如果使用 sed，这里有一个解决方案：
find . -type f -exec sed -i 's/\r$//' {} \;
-i 代表就地，如果您还想创建备份，请使用-i.bak
's/\r$//' 将替换每行末尾的所有回车符（\r）
【讨论】：
sed: cannot rename ./.git/objects/16/sed68Vezl: Permission denied。在这种情况下，您必须排除 .git 文件夹。
.mp4、.jpg 或.png，因为它会损坏它们。
dos2unix 为你做这件事。相当直接的过程。dos2unix filename
感谢 toolbear，这是一个递归替换行尾并正确处理空格、引号和 shell 元字符的单行代码。
find . -type f -exec dos2unix {} \;
如果您使用的是 dos2unix 6.0 二进制文件将被忽略。
【讨论】：
find blog -type f | xargs dos2unix 应该更快。您也不需要-name *.*，除非您特别想要名称中某处带有句点的文件。这是一个 windows glob，而不是一个 *nix 。
find 匹配路径中包含空格、引号或其他 shell 元字符的任何文件，则将 find 管道连接到 xargs 将失败。至少使用find blog -type f -print0 | xargs -0 dos2unix 来处理空格的情况。您必须使用find 的-exec 而不是管道以避免引号等。dos2unix 手册页未指定在二进制文件上调用它时的行为。如果它将 CRLF 转换为二进制文件，则会损坏它们。请参阅我的答案以获得更安全但更长的替代方案。
;)。如果从 shell 调用 find ，如果 shell 将其视为控制运算符，则可能需要引用分号。如果字符串 {} 出现在实用程序名称或参数中的任何位置，则将其替换为当前文件的路径名。”
在 OS X 上，这对我有用：
find ./ -type f -exec perl -pi -e 's/\r\n|\n|\r/\n/g' {} \;
警告：请在执行此命令之前备份您的目录。
【讨论】：
find . -not \( -name .svn -prune -o -name .git -prune \) -type f -exec perl -pi -e 's/\r\n|\n|\r/\n/g' {} \;
这更安全，因为它可以避免破坏你的 git repo。将 .git、.svn 添加或替换为 .bzr、.hg 或您使用的任何源代码控制到 not 列表。
【讨论】：
假设您有 GNU grep 和 perl，这将在当前目录下的非二进制文件中递归地将 CRLF 转换为 LF：
find . -type f -exec grep -qIP '\r\n' {} ';' -exec perl -pi -e 's/\r\n/\n/g' {} '+'
在当前目录下递归查找；将. 更改为blog 或whatev 子目录以限制替换：
find .
只匹配常规文件：
-type f
测试文件是否包含 CRLF。排除二进制文件。为每个常规文件运行 grep 命令。这就是排除二进制文件的代价。如果您有旧的grep，您可以尝试使用file 命令构建测试：
-exec grep -qIP '\r\n' {} ';'
用 LF 替换 CRLF。 '+' 和第二个 -exec 告诉 find 累积匹配文件并将它们传递给命令的一个（或尽可能少的）调用——比如管道到xargs，但如果文件路径包含空格、引号或其他 shell 元字符。 -pi 中的 i 告诉 perl 修改文件。您可以在这里使用sed 或awk 进行一些工作，并且您可能会将“+”更改为“;”并为每个匹配调用一个单独的过程：
-exec perl -pi -e 's/\r\n/\n/g' {} '+'
【讨论】：
grep -qIP '\r\n' 永远不会匹配我 CentOS 系统上的任何东西。将其更改为 grep -qIP '\r$' 有效。
node_modules 这样的文件夹？
find 部分以排除目录。他们建议使用-path，但您也可以使用-regex 或-iregex，即-not -regex '.*/node_modules/.*'，它将在任何深度排除node_modules。
regex 或 bash 菜鸟的身份出现，但多重排除呢，例如 node_module 和 dist？
这里有一个更好的选择：Swiss File Knife。它以递归方式跨子目录工作，并正确处理空格和特殊字符。
你所要做的就是：
sfk remcr -dir your_project_directory
奖励：sfk 还进行了许多其他转换。完整列表见下文：
SFK - The Swiss File Knife File Tree Processor.
Release 1.6.7 Base Revision 2 of May 3 2013.
StahlWorks Technologies, http://stahlworks.com/
Distributed for free under the BSD License, without any warranty.
type "sfk commandname" for help on any of the following.
some commands require to add "-help" for the help text.
file system
sfk list - list directory tree contents.
list latest, oldest or biggest files.
list directory differences.
list zip jar tar gz bz2 contents.
sfk filefind - find files by filename
sfk treesize - show directory size statistics
sfk copy - copy directory trees additively
sfk sync - mirror tree content with deletion
sfk partcopy - copy part from a file into another one
sfk mkdir - create directory tree
sfk delete - delete files and folders
sfk deltree - delete whole directory tree
sfk deblank - remove blanks in filenames
sfk space [-h] - tell total and free size of volume
sfk filetime - tell times of a file
sfk touch - change times of a file
conversion
sfk lf-to-crlf - convert from LF to CRLF line endings
sfk crlf-to-lf - convert from CRLF to LF line endings
sfk detab - convert TAB characters to spaces
sfk entab - convert groups of spaces to TAB chars
sfk scantab - list files containing TAB characters
sfk split - split large files into smaller ones
sfk join - join small files into a large one
sfk hexdump - create hexdump from a binary file
sfk hextobin - convert hex data to binary
sfk hex - convert decimal number(s) to hex
sfk dec - convert hex number(s) to decimal
sfk chars - print chars for a list of codes
sfk bin-to-src - convert binary to source code
text processing
sfk filter - search, filter and replace text data
sfk addhead - insert string at start of text lines
sfk addtail - append string at end of text lines
sfk patch - change text files through a script
sfk snapto - join many text files into one file
sfk joinlines - join text lines split by email reformatting
sfk inst - instrument c++ sourcecode with tracing calls
sfk replace - replace words in binary and text files
sfk hexfind - find words in binary files, showing hexdump
sfk run - run command on all files of a folder
sfk runloop - run a command n times in a loop
sfk printloop - print some text many times
sfk strings - extract strings from a binary file
sfk sort - sort text lines produced by another command
sfk count - count text lines, filter identical lines
sfk head - print first lines of a file
sfk tail - print last lines of a file
sfk linelen - tell length of string(s)
search and compare
sfk find - find words in binary files, showing text
sfk md5gento - create list of md5 checksums over files
sfk md5check - verify list of md5 checksums over files
sfk md5 - calc md5 over a file, compare two files
sfk pathfind - search PATH for location of a command
sfk reflist - list fuzzy references between files
sfk deplist - list fuzzy dependencies between files
sfk dupfind - find duplicate files by content
networking
sfk httpserv - run an instant HTTP server.
type "sfk httpserv -help" for help.
sfk ftpserv - run an instant FTP server
type "sfk ftpserv -help" for help.
sfk ftp - instant anonymous FTP client
sfk wget - download HTTP file from the web
sfk webrequest - send HTTP request to a server
sfk tcpdump - print TCP conversation between programs
sfk udpdump - print incoming UDP requests
sfk udpsend - send UDP requests
sfk ip - tell own machine's IP address(es).
type "sfk ip -help" for help.
sfk netlog - send text outputs to network,
and/or file, and/or terminal
scripting
sfk script - run many sfk commands in a script file
sfk echo - print (coloured) text to terminal
sfk color - change text color of terminal
sfk alias - create command from other commands
sfk mkcd - create command to reenter directory
sfk sleep - delay execution for milliseconds
sfk pause - wait for user input
sfk label - define starting point for a script
sfk tee - split command output in two streams
sfk tofile - save command output to a file
sfk toterm - flush command output to terminal
sfk loop - repeat execution of a command chain
sfk cd - change directory within a script
sfk getcwd - print the current working directory
sfk require - compare version text
development
sfk bin-to-src - convert binary data to source code
sfk make-random-file - create file with random data
sfk fuzz - change file at random, for testing
sfk sample - print example code for programming
sfk inst - instrument c++ with tracing calls
diverse
sfk media - cut video and binary files
sfk view - show results in a GUI tool
sfk toclip - copy command output to clipboard
sfk fromclip - read text from clipboard
sfk list - show directory tree contents
sfk env - search environment variables
sfk version - show version of a binary file
sfk ascii - list ISO 8859-1 ASCII characters
sfk ascii -dos - list OEM codepage 850 characters
sfk license - print the SFK license text
help by subject
sfk help select - how dirs and files are selected in sfk
sfk help options - general options reference
sfk help patterns - wildcards and text patterns within sfk
sfk help chain - how to combine (chain) multiple commands
sfk help shell - how to optimize the windows command prompt
sfk help unicode - about unicode file reading support
sfk help colors - how to change result colors
sfk help xe - for infos on sfk extended edition.
All tree walking commands support file selection this way:
1. short format with ONE directory tree and MANY file name patterns:
src1dir .cpp .hpp .xml bigbar !footmp
2. short format with a list of explicite file names:
letter1.txt revenues9.xls report3\turnover5.ppt
3. long format with MANY dir trees and file masks PER dir tree:
-dir src1 src2 !src\save -file foosys .cpp -dir bin5 -file .exe
For detailed help on file selection, type "sfk help select".
* and ? wildcards are supported within filenames. "foo" is interpreted
as "*foo*", so you can leave out * completely to search a part of a name.
For name start comparison, say "\foo" (finds foo.txt but not anyfoo.txt).
When you supply a directory name, by default this means "take all files".
sfk list mydir lists ALL files of mydir, no * needed.
sfk list mydir .cpp .hpp lists SOME files of mydir, by extension.
sfk list mydir !.cfg lists all files of mydir EXCEPT .cfg
general options:
-tracesel tells in detail which files and/or directories are included
or excluded, and why (due to which user-supplied mask).
-nosub do not process files within subdirectories.
-nocol before any command switches off color output.
-quiet or -nohead shows less output on some commands.
-hidden includes hidden and system files and dirs.
For detailed help on all options, type "sfk help options".
beware of Shell Command Characters.
command parameters containing characters < > | ! & must be sur-
rounded by quotes "". type "sfk filter" for details and examples.
type "sfk ask word1 word2 ..." to search ALL help text for words.
type "sfk dumphelp" to print ALL help text.
编辑：请注意：在包含二进制文件的文件夹上运行此程序时要小心，因为它会有效地破坏您的文件，尤其是 .git 目录。如果是这种情况，请不要在整个文件夹中运行 sfk，而是选择特定的文件扩展名（*.rb、*.py 等）。示例：sfk remcr -dir chef -file .rb -file .json -file .erb -file .md
【讨论】：
sfk 有效地处理了我的整个 .git 文件夹并销毁了一堆二进制文件（因此我的 edit；不记得了如果是 Linux 或 Mac）。他们可能在较新的版本中更改了默认行为，但为了安全起见，我仍然建议指定扩展名。