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Top Forums UNIX for Dummies Questions & Answers [Solved] Removing control-m characters from shell script Post 302729777 by bdittmar on Sunday 11th of November 2012 11:09:11 AM
Old 11-11-2012
dos2unix , unix2dos

Quote:
Originally Posted by abhi_123
Hi All,

I need to remove control m character from a file.

Steps which i am doing in shell script are:
1) We are comparing the header of the file to the database table header

Here the file header has control-m characters. How do i remove it.
Please help. Below are the steps i am using, but is not working out.

v_header=`sed 1q $v_sftphomedir/$v_finalsourcefile`
echo $v_header |tr -d '\015' > v_avilableheader
or
sed 's/^M//g' $v_header Smilie


Please help.
Hello,

If you copy a file created or modified in Windows or DOS to a Linux/Unix file system, you sometimes find ^M characters at the end of each line.

try to use dos2unix / unix2dos.

Regards

Last edited by bdittmar; 11-11-2012 at 12:13 PM.. Reason: Add line
 

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unix2dos(1)							   User Commands						       unix2dos(1)

NAME
unix2dos - convert text file from ISO format to DOS format SYNOPSIS
unix2dos [-ascii] [-iso] [-7] [-437 | -850 | -860 | -863 | -865] originalfile convertedfile DESCRIPTION
The unix2dos utility converts ISO standard characters to the corresponding characters in the DOS extended character set. This command may be invoked from either DOS or SunOS. However, the filenames must conform to the conventions of the environment in which the command is invoked. If the original file and the converted file are the same, unix2dos will rewrite the original file after converting it. OPTIONS
The following options are supported: -ascii Adds carriage returns and converts end of file characters in SunOS format text files to conform to DOS requirements. -iso This is the default. Converts ISO standard characters to the corresponding character in the DOS extended character set. -7 Converts 8 bit SunOS characters to 7 bit DOS characters. On non-i386 systems, unix2dos will attempt to obtain the keyboard type to determine which code page to use. Otherwise, the default is US. The user may override the code page with one of the following options: -437 Use US code page -850 Use multilingual code page -860 Use Portuguese code page -863 Use French Canadian code page -865 Use Danish code page OPERANDS
The following operands are required: originalfile The original file in ISO format that is being converted to DOS format. convertedfile The new file in DOS format that has been converted from the original ISO file format. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
dos2unix(1), ls(1), attributes(5) DIAGNOSTICS
File filename not found, or no read permission The input file you specified does not exist, or you do not have read permission. Check with the SunOS command, ls -l (see ls(1)). Bad output filename filename, or no write permission The output file you specified is either invalid, or you do not have write permission for that file or the directory that contains it. Check also that the drive or diskette is not write-protected. Error while writing to temporary file An error occurred while converting your file, possibly because there is not enough space on the current drive. Check the amount of space on the current drive using the DIR command. Also be certain that the default diskette or drive is write-enabled (not write-pro- tected). Notice that when this error occurs, the original file remains intact. Translated tmpfile name = filename. Could not rename tmpfile to filename. The program could not perform the final step in converting your file. Your converted file is stored under the name indicated on the second line of this message. SunOS 5.10 14 Sep 2000 unix2dos(1)
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