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Top Forums Shell Programming and Scripting Using awk to select one field Post 302887896 by Dheepak s on Tuesday 11th of February 2014 12:18:12 PM
Old 02-11-2014
Using awk to select one field

Hi,
I saw your post..
I have a dought in awk command...

how to get the output from a file. i need a first column in etc/passwd file in a single column (in indivijual line)...
i couldn't get with this command
Code:
cat /etc/passwd | awk -F ":" '{printf $1}'

Kindly help
Moderator's Comments:
Mod Comment This thread was created from postings hijacking another thread.

When you have a new topic; start a new thread.

Last edited by Don Cragun; 02-11-2014 at 01:32 PM.. Reason: Explain how this thread was created and add CODE tags.
 

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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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