windows下编写的脚本，上传到linux上执行，有时会出现莫名其妙的结果，也是折腾了半天才找出原因，windows和linux有些编码不同，经dos2unix处理后，结果一切正常
man
dos2unix结果如下，英文不难理解，一看就基本懂，所以也懒得翻译了
NAME
dos2unix - DOS/MAC to UNIX text file format
converter
SYNOPSYS
dos2unix
[options] [-c convmode] [-o file ...] [-n infile outfile
...]
Options:
[-hkqV] [--help]
[--keepdate] [--quiet]
[--version]
DESCRIPTION
This manual page documents dos2unix, the program that converts plain text
files in DOS/MAC
format to UNIX
format.
OPTIONS
The following
options are available:
-h
--help
Print online help.
-k
--keepdate
Keep the date stamp of output file same as input
file.
-q
--quiet
Quiet mode. Suppress all warning and
messages.
-V
--version
Prints version information.
-c
--convmode
convmode
Sets conversion mode. Where convmode is one of: ASCII, 7bit, ISO,
Mac with
ASCII
being the default. Simulates dos2unix under
SunOS.
-o --oldfile file
...
Old file mode. Convert the file and write output to it. The program
default to
run
in this mode. Wildcard names may be
used.
-n --newfile infile outfile
...
New file mode. Convert the infile and write output to outfile. File
names must
be
given in pairs and wildcard names should NOT be used or you WILL lose your
files.
EXAMPLES
Get input from
stdin and write output to
stdout.
dos2unix
Convert and replace a.txt.
Convert and replace
b.txt.
dos2unix a.txt
b.txt
dos2unix -o a.txt b.txt
Convert and
replace a.txt in ASCII conversion
mode.
dos2unix a.txt -c iso b.txt
Convert
and replace b.txt in ISO conversion
mode.
dos2unix -c ascii a.txt -c iso b.txt
Convert c.txt from Mac to Unix ascii
format.
dos2unix -c mac c.txt b.txt
Convert
and replace a.txt while keeping original date
stamp.
dos2unix -k
a.txt
dos2unix -k -o a.txt
Convert a.txt
and write to
e.txt.
dos2unix -n a.txt e.txt
Convert
a.txt and write to e.txt, keep date stamp of e.txt same as
a.txt.
dos2unix -k -n a.txt e.txt
Convert
and replace a.txt. Convert b.txt and write to
e.txt.
dos2unix a.txt -n b.txt
e.txt
dos2unix -o a.txt -n b.txt e.txt
Convert c.txt and write to e.txt. Convert and replace
a.txt. Convert and replace b.txt.
Convert d.txt and write to
f.txt.
dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt
原文：http://www.cnblogs.com/dytl/p/3719445.html