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Top Forums UNIX for Dummies Questions & Answers there was a strange character(^M) been added automatically in UNIX Post 11088 by Jasmine on Wednesday 28th of November 2001 09:02:56 PM
Old 11-28-2001
Question there was a strange character(^M) been added automatically in UNIX

I used Notepad to compile my txt file and then I transferred this file to UNIX. When I use vi to open the file, I found that at the end of each line there was a "^M" character.
In the original txt file there was not this character. Why this character would been added automatically in UNIX?
 

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mkmanifest(1)						      General Commands Manual						     mkmanifest(1)

NAME
mkmanifest - mtools utility to create a shell script to restore UNIX file names from DOS SYNOPSIS
mkmanifest [files] OPTIONS
None OPERANDS
A list of UNIX file names to be converted to DOS name format. DESCRIPTION
The mkmanifest command creates a shell script that aids in the restore of UNIX file names that were overwritten by DOS file name restric- tions. DOS file names are uppercase only, cannot exceed 8 character names, 3 character extensions and do not support device names or non- alphanumeric characters. Not all UNIX file names are supported in the DOS world. The mtools commands may have to change UNIX names to fit the DOS file name conven- tions. Most commands provide the verbose option (-v), that displays new file names if they have been changed. The following table shows some examples of file name conversions: ----------------------------------------------- UNIX name DOS name Reason for the change ----------------------------------------------- thisisatest THISISAT file name too long file.stuff FILE.STU extension too long prn.txt XRN.TXT PRN is a device name .abc X.ABC null file name hot+cold HOTXCOLD illegal character ----------------------------------------------- EXIT STATUS
The following exit values are returned: Success. Failure. EXAMPLES
Assume you have the following UNIX files that you want to copy to a DOS diskette using the mcopy command. very_long_name 2.many.dots illegal: good.c prn.dev Capital The mcopy command converts these file names to the following: very_lon 2xmany.dot illegalx good.c xprn.dev capital To restore the previous file names, use the mkmanifest command as follows: mkmanifest very_long_name 2.many.dots illegal: good.c prn.dev Capital > manifest The previous mkmanifest command line produces the following: mv very_lon very_long_name mv 2xmany.dot 2.many.dots mv illegalx illegal: mv xprn.dev prn.dev mv capital Capital The good.c file name did not require conversion, hence it was not included in the output. If these files were copied from diskette to another UNIX system, and you wanted to restore the original names, retain a copy of the mani- fest file (captured output) so that it can be used to convert the file names again. FILES
Executable file SEE ALSO
Commands: mcopy(1), mtools(1) mkmanifest(1)
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