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Top Forums Programming awk processing / Shell Script Processing to remove columns text file Post 302784893 by ajayram on Saturday 23rd of March 2013 01:03:35 PM
Old 03-23-2013
Thanks

Hello,

Thank you for helping me out. It works..Smilie

---------- Post updated at 07:03 PM ---------- Previous update was at 06:00 PM ----------

Hello,

So I ran this Awk code in the end

Code:
awk '{print substr($0,7)}' filelist

through the shell like this : I wanted the output to get redirected to the same file as the input
thus,

Code:
[milli@milli ~]$ sh test.awk > filelist

I expected to see the filelist overwritten with the new input from the Results of the Shell Script, however, it produces a blank file.

If I give this command
Code:
[milli@milli ~]$ sh test.awk >> filelist

Then it gets appended as usual.

If I try a different filename for output redirection , then it works properly.

Any idea what is happening ?
 

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MKBOM(8)						    BSD System Manager's Manual 						  MKBOM(8)

NAME
mkbom -- create a bill-of-materials file SYNOPSIS
mkbom [-s] directory bom mkbom [-s] -i filelist bom mkbom -h | --help DESCRIPTION
The mkbom command creates a bill-of-materials (bom(5)). You must specify either a source as a directory, or a text file containing a file listing as outputted by lsbom(8). mkbom will generate bill-of-materials information based on that information. Any existing bomfile will be overwritten by the new bomfile. Options: -h print full usage -s create a simplified bom containing only file paths -i filelist use the information in filelist, one entry per line, to construct the bom file. The format of the file should match lsbom(8) output with no formatting options (the default). If -s is given to mkbom, the input filelist should contain only pathnames, as with lsbom -s. SEE ALSO
bom(5), ditto(8), mkbom(8) HISTORY
The mkbom command appeared in NeXTSTEP as a tool to create bom files used during installation. Mac OS X September 26, 2006 Mac OS X
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