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UNIX® Shells by Example, Third Edition
book

UNIX® Shells by Example, Third Edition

by Ellie Quigley
October 2001
Intermediate to advanced content levelIntermediate to advanced
1040 pages
22h 50m
English
Pearson
Content preview from UNIX® Shells by Example, Third Edition

6.2. Review

6.2.1. Equality Testing

% cat datafile
					northwest           NW   Joe Craig         3.0   .98    3    4
					western             WE   Sharon Kelly      5.3   .97    5    23
					southwest           SW   Chris Foster      2.7   .8     2    18
					southern            SO   May Chin          5.1   .95    4    15
					southeast           SE   Derek Johnson     4.0   .7     4    17
					eastern             EA   Susan Beal        4.4   .84    5    20
					northeast           NE   TJ Nichols        5.1   .94    3    13
					north               NO   Val Shultz        4.5   .89    5    9
					central             CT   Sheri Watson      5.7   .94    5    13
				
Example 6.9.
						nawk '$7 == 5' datafile
						western       WE      Sharon Kelly       5.3  .97  5    23
						eastern       EA      Susan Beal         4.4  .84  5    20
						north         NO      Val Shultz         4.5  .89  5    9
						central       CT      Sheri Watson       5.7  .94  5    13
					

EXPLANATION

If the seventh field ($7) is equal to the number 5, the record is printed.

Example 6.10.
						nawk '$2 == "CT"{print $1, $2}' datafile
						central       CT
					

EXPLANATION

If the second field is ...

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Publisher Resources

ISBN: 013066538XPurchase book