Use:

tr -d "\r" < file

看一下使用sed的例子:

# In a Unix environment: convert DOS newlines (CR/LF) to Unix format.
sed 's/.$//'               # Assumes that all lines end with CR/LF
sed 's/^M$//'              # In Bash/tcsh, press Ctrl-V then Ctrl-M
sed 's/\x0D$//'            # Works on ssed, gsed 3.02.80 or higher

# In a Unix environment: convert Unix newlines (LF) to DOS format.
sed "s/$/`echo -e \\\r`/"            # Command line under ksh
sed 's/$'"/`echo \\\r`/"             # Command line under bash
sed "s/$/`echo \\\r`/"               # Command line under zsh
sed 's/$/\r/'                        # gsed 3.02.80 or higher

使用sed -i进行就地转换，例如sed -i 's/..../ '文件。

The solutions posted so far only deal with part of the problem, converting DOS/Windows' CRLF into Unix's LF; the part they're missing is that DOS use CRLF as a line separator, while Unix uses LF as a line terminator. The difference is that a DOS file (usually) won't have anything after the last line in the file, while Unix will. To do the conversion properly, you need to add that final LF (unless the file is zero-length, i.e. has no lines in it at all). My favorite incantation for this (with a little added logic to handle Mac-style CR-separated files, and not molest files that're already in unix format) is a bit of perl:

perl -pe 'if ( s/\r\n?/\n/g ) { $f=1 }; if ( $f || ! $m ) { s/([^\n])\z/$1\n/ }; $m=1' PCfile.txt

注意，这将把文件的统一版本发送到标准输出。如果你想用一个统一的版本替换这个文件，添加perl的-i标志。

sed -i.bak --expression='s/\r\n/\n/g' <file_path>

因为问题中提到了sed，所以这是使用sed实现此目的的最直接的方法。该表达式表示仅用换行符替换所有换行符和换行符。这就是你从Windows到Unix所需要的。我验证过了。

Use:

tr -d "\r" < file

看一下使用sed的例子:

# In a Unix environment: convert DOS newlines (CR/LF) to Unix format.
sed 's/.$//'               # Assumes that all lines end with CR/LF
sed 's/^M$//'              # In Bash/tcsh, press Ctrl-V then Ctrl-M
sed 's/\x0D$//'            # Works on ssed, gsed 3.02.80 or higher

# In a Unix environment: convert Unix newlines (LF) to DOS format.
sed "s/$/`echo -e \\\r`/"            # Command line under ksh
sed 's/$'"/`echo \\\r`/"             # Command line under bash
sed "s/$/`echo \\\r`/"               # Command line under zsh
sed 's/$/\r/'                        # gsed 3.02.80 or higher

使用sed -i进行就地转换，例如sed -i 's/..../ '文件。

这是超级duper容易与PCRE;

作为脚本，或者用文件替换$@。

#!/usr/bin/env bash
perl -pi -e 's/\r\n/\n/g' -- $@

这将覆盖您的文件! 我建议只在备份时这样做(版本控制或其他方式)

我试着

sed 's/^M$//' file.txt

在OS X以及其他一些方法(修复Dos行结束或http://hintsforums.macworld.com/archive/index.php/t-125.html)。没有一个工作，文件保持不变(顺便说一下，需要按Ctrl + V, Enter来重新生成^M)。最后我使用了TextWrangler。它不是严格意义上的命令行，但它可以工作，而且不会抱怨。