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Full Discussion: Filter file according to pattern
Top Forums UNIX for Dummies Questions & Answers Filter file according to pattern Post 302442931 by akashtcs on Friday 6th of August 2010 02:25:54 AM
Old 08-06-2010
Filter file according to pattern
Hello

I have an input file which is tab delimited.In my unix script I have search for a particular pattern.If it is NOT present then I have to write in an output file.
Eg.Input file is :
Code:
123  hello 7779 hi hkjh88 hahah
678  hello 90845 ti hkjsdfh 9324

And the search string is "123 hello hi".If all these are present in the particular line then the line should not be written to the output file.All other lines should be written.The output file will look like:
Code:
678  hello 90845 ti hkjsdfh 9324

The fields are present at fixed position of the tab-delimited line.In the above ex 1,2 and 4.
Plz help
Thanks
 

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LEARN ABOUT ULTRIX

pnmsplit

pnmsplit(1)                                                   General Commands Manual                                                  pnmsplit(1)

NAME

       pnmsplit - split a multi-image portable anymap into multiple single-image files

SYNOPSIS

       pnmsplit [pnmfile[ output_file_pattern]]

DESCRIPTION

       Reads a Netpbm file as input.  Copies each image in the input into a separate file, in the same format.

       pnmfile is the file specification of the input file, or - to indicate Standard Input.  The default is Standard Input.

       output_file_pattern  tells  how to name the output files.  It is the file specification of the output file, except that the first occurence
       of "%d" in it is replaced by the image sequence number in unpadded ASCII decimal, with the sequence starting at 0.  If there is no "%d"  in
       the pattern, pnmsplit fails.

       The default output file pattern is "image%d".

       Note  that  to do the reverse operation (combining multiple single-image PNM files into a multi-image one), there is no special Netpbm pro-
       gram.  Just use cat.

SEE ALSO

       pnm(5), cat(1)

AUTHOR

       Written by Bryan Henderson

                                                                   19 June 2000                                                        pnmsplit(1)
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