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 ...