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Top Forums UNIX for Dummies Questions & Answers Sed/awk to find negative numbers and replace with 1? Post 302897019 by Twinklefingers on Thursday 10th of April 2014 01:26:26 PM
Old 04-10-2014
Sed/awk to find negative numbers and replace with 1?

Greetings. I have a three column file, and there are some numbers in the second column that are <1. However I need all numbers to be positive, thus need to replace all those numbers with just one. I feel like there must be a simple way to use awk to find these numbers and sed to replace but can't make it work.

Input:
Code:
3.894672	4221	4232
79.974159	-63	76
26.139051	1786	1798
30.866007	5045	5055
42.381535	-199	205
17.103092	-953	961
29.135157	1365	1384
29.135157	1643	1658

Desired Output:
Code:
3.894672	4221	4232
79.974159	1	76
26.139051	1786	1798
30.866007	5045	5055
42.381535	1	205
17.103092	1	961
29.135157	1365	1384
29.135157	1643	1658

Thanks!
 

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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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