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Full Discussion: awk related query
Top Forums UNIX for Dummies Questions & Answers awk related query Post 302197914 by abhisek.says on Thursday 22nd of May 2008 12:59:09 AM
Old 05-22-2008
Question awk related query

hi,

I have to extract a column from a file and then updated that column..??

Now i can use wak for extracting it and then how to update it..

$ awk' {print $5}' input_file

Can i use sed command here piping it to the output from the awk command..
 

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COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD
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