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Full Discussion: awk for column selection
Top Forums UNIX for Dummies Questions & Answers awk for column selection Post 302437871 by Gussifinknottle on Friday 16th of July 2010 11:09:43 AM
Old 07-16-2010
awk for column selection

Hello,

I want to extract all values from table except for those that contain the '*' character in the second column. I tried awk '$2!=*' and this threw a syntax error. Do I need to specify an escape character or != is valid only for numerical comparisons?

Thanks,
Guss
 

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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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