今天第一次接觸這個，做個記錄，最近覺得linux的東西知道的太少了，不行，得好好看點資料了。

命令簡介：

dos2unix是將Windows格式文件轉換為Unix、Linux格式的實用命令。Windows格式文件的換行符為\r\n ,而Unix&Linux文件的換行符為\n. dos2unix命令其實就是將文件中的\r\n 轉換為\n。

而unix2dos則是和dos2unix互為孿生的一個命令，它是將Linux&Unix格式文件轉換為Windows格式文件的命令。

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命令語法：

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dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]

unix2dos [options] [-c convmode] [-o file ...] [-n infile outfile ...]

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命令參數：

此命令參數是Red Hat Enterprise Linux Server release 5.7下dos2unix命令參數，不同版本Linux的dos2nnix命令參數有可能不同。

參數	長參數	描敘
-h	?	顯示命令dos2unix聯機幫助信息。
-k	?	保持文件時間戳不變
-q	?	靜默模式，不輸出轉換結果信息等
-V	?	顯示命令版本信息
-c	?	轉換模式
-o	?	在源文件轉換，默認參數
-n	?	保留原本的舊檔，將轉換后的內容輸出到新檔案.默認都會直接在原來的文件上修改，

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使用示例：

1: 查看dos2unix命令的幫助信息

[root@DB-Server myscript]# man dos2unix ? [root@DB-Server myscript]# dos2unix -h dos2unix Copyright (c) 1994-1995 Benjamin Lin ???????? Copyright (c) 1998????? Bernd Johannes Wuebben (Version 3.0) ???????? Copyright (c) 1998????? Christian Wurll (Version 3.1) Usage: dos2unix [-hkqV] [-c convmode] [-o file ...] [-n infile outfile ...] -h --help??????? give this help -k --keepdate??? keep output file date -q --quiet?????? quiet mode, suppress all warnings ????????????????? always on in stdin->stdout mode -V --version???? display version number -c --convmode??? conversion mode convmode???????? ASCII, 7bit, ISO, Mac, default to ASCII -l --newline???? add additional newline in all but Mac convmode -o --oldfile???? write to old file file ...???????? files to convert in old file mode -n --newfile???? write to new file infile?????????? original file in new file mode outfile????????? output file in new file mode

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2: dos2unix filename 將Windows格式文本轉換為Unix&Linux格式文件

1: [root@DB-Server myscript]# cat -v test.sh 2: . /home/oracle/.bash_profile^M 3: echo ' '^M 4: date^M 5: echo ' '^M 6: ^M 7: sqlplus test/test @/home/oracle/scripts/test.sql^M 8: ^M 9: echo ' '^M 10: date^M 11: echo ' '^M 12: [root@DB-Server myscript]# dos2unix test.sh 13: dos2unix: converting file test.sh to UNIX format ... 14: [root@DB-Server myscript]# cat -v test.sh 15: . /home/oracle/.bash_profile 16: echo ' ' 17: date 18: echo ' ' 19:? 20: sqlplus test/test @/home/oracle/scripts/test.sql 21:? 22: echo ' ' 23: date 24: echo ' '

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3： dos2unix 可以一次轉換多個文件

1: dos2unix filename1 filename2 filename3

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4: 默認情況下會在源文件上進行轉換，如果需要保留源文件，那么可以使用參數-n dos2unix -n oldfilename newfilename

1: [root@DB-Server myscript]# dos2unix -n dosfile linuxfile 2: dos2unix: converting file dosfile to file linuxfile in UNIX format ... 3: [root@DB-Server myscript]# cat -v dosfile 4: it is a windows dos file^M 5: you should convert to unix&linux format^M 6: [root@DB-Server myscript]# cat -v linuxfile 7: it is a windows dos file 8: you should convert to unix&linux format 9: [root@DB-Server myscript]#

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5:保持文件時間戳不變

1: [root@DB-Server myscript]# ls -lrt dosfile 2: -rw-r--r-- 1 root root 67 Dec 26 11:46 dosfile 3: [root@DB-Server myscript]# dos2unix dosfile 4: dos2unix: converting file dosfile to UNIX format ... 5: [root@DB-Server myscript]# ls -lrt dosfile 6: -rw-r--r-- 1 root root 65 Dec 26 11:58 dosfile 7: [root@DB-Server myscript]# dos2unix -k dosfile 8: dos2unix: converting file dosfile to UNIX format ... 9: [root@DB-Server myscript]# ls -lrt dosfile 10: -rw-r--r-- 1 root root 65 Dec 26 11:58 dosfile

6：靜默模式格式化文件

1: [root@DB-Server myscript]# unix2dos -q dosfile 2:? 3: [root@DB-Server myscript]#

dos2unix的下載地址為http://sourceforge.net/projects/dos2unix/ ,可以從上面下載最新版本的dos2unix、unix2dos等命令工具以及相關文檔，dos2unix的源碼如下所示

1: /* 2: 3: *? Name: dos2unix 4: 5: *? Documentation: 6: 7: *??? Remove cr ('\x0d') characters from a file. 8: 9: * 10: 11: *? The dos2unix package is distributed under FreeBSD style license. 12: 13: *? See also http://www.freebsd.org/copyright/freebsd-license.html 14: 15: *? -------- 16: 17: * 18: 19: *? Copyright (C) 2009-2015 Erwin Waterlander 20: 21: *? Copyright (C) 1998 Christian Wurll 22: 23: *? Copyright (C) 1998 Bernd Johannes Wuebben 24: 25: *? Copyright (C) 1994-1995 Benjamin Lin. 26: 27: *? All rights reserved. 28: 29: * 30: 31: *? Redistribution and use in source and binary forms, with or without 32: 33: *? modification, are permitted provided that the following conditions 34: 35: *? are met: 36: 37: *? 1. Redistributions of source code must retain the above copyright 38: 39: *???? notice, this list of conditions and the following disclaimer. 40: 41: *? 2. Redistributions in binary form must reproduce the above copyright 42: 43: *???? notice in the documentation and/or other materials provided with 44: 45: *???? the distribution. 46: 47: * 48: 49: *? THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY 50: 51: *? EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52: 53: *? IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 54: 55: *? PURPOSE ARE DISCLAIMED.? IN NO EVENT SHALL THE AUTHOR BE LIABLE 56: 57: *? FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 58: 59: *? CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 60: 61: *? OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 62: 63: *? BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 64: 65: *? WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 66: 67: *? OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 68: 69: *? IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70: 71: * 72: 73: *? == 1.0 == 1989.10.04 == John Birchfield (jb@koko.csustan.edu) 74: 75: *? == 1.1 == 1994.12.20 == Benjamin Lin (blin@socs.uts.edu.au) 76: 創作挑戰賽新人創作獎勵來咯，堅持創作打卡瓜分現金大獎

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