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Full Discussion: Shell script to overwrite a file
Top Forums Shell Programming and Scripting Shell script to overwrite a file Post 302827267 by Karthick N on Friday 28th of June 2013 11:00:08 AM
Old 06-28-2013
Shell script to overwrite a file
Hi Guys,

My requirement as follows,

i want to write a shell script to display the files of a folder, i export it to a file to mail the file. The problem is the exported file is getting appended every time I run the script. I just want the file to be over written. can anyone suggest??
Code:
#./bin/bash
ls -ltr >> listed
ls -ltr | wc -l >> listed
mail -s "listed" abc@yahoo.co.in < listed

Regards
Karthick
Last edited by vbe; 06-28-2013 at 12:31 PM.. Reason: code tags please for your code and data
 

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LEARN ABOUT OPENDARWIN

shar

SHAR(1) 						    BSD General Commands Manual 						   SHAR(1)

NAME

     shar -- create a shell archive of files

SYNOPSIS

     shar file ...

DESCRIPTION

     shar writes an sh(1) shell script to the standard output which will recreate the file hierarchy specified by the command line operands.
     Directories will be recreated and must be specified before the files they contain (the find(1) utility does this correctly).

     shar is normally used for distributing files by ftp(1) or mail(1).

SEE ALSO

     compress(1), mail(1), uuencode(1), tar(1)

BUGS

     shar makes no provisions for special types of files or files containing magic characters.

EXAMPLES

     To create a shell archive of the program ls(1) and mail it to Rick:

	   cd ls
	   shar `find . -print` |  mail -s "ls source" rick

     To recreate the program directory:

	   mkdir ls
	   cd ls
	   ...
	   <delete header lines and examine mailed archive>
	   ...
	   sh archive

HISTORY

     The shar command appears in 4.4BSD.

SECURITY CONSIDERATIONS

     It is easy to insert trojan horses into shar files.  It is strongly recommended that all shell archive files be examined before running them
     through sh(1).  Archives produced using this implementation of shar may be easily examined with the command:

	   egrep -v '^[X#]' shar.file

4.4BSD								   June 6, 1993 							    4.4BSD
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