jake

Sep
20th

Tue

tip: awk

check if a variable is numeric in awk func isnum(x) {return x==x+0} http://bit.ly/pTDTXW

tips awk

Sep
30th

Thu

use awk -v var=$bashvar to pass bash variables to awk scripts http://bit.ly/c4vjLc

tips awk

Jul
16th

Fri

nice 3 part series from gentoo, “awk by example” http://bit.ly/98jiD5

tips awk

nice 3 part series from gentoo, “awk by example” http://bit.ly/aaavNv

tips awk

Jun
8th

Tue

to use multiple characters as field separators use a regular expression, e.g. awk -F”[]” for http://bit.ly/cibp1l

tips awk

Mar
30th

Mon

to print all lines where, e.g., the second field matches a regex use awk ‘$2 ~ /regex/’ http://bit.ly/BVnN

tips awk

Apr
6th

Thu

to print even lines, NR %2. odd lines, ‘NR % 2 == 1’.

tips awk

Feb
15th

Wed

replace fields with nothing … {$1=”“; print $0;}

tips awk

Nov
14th

Mon

to ignore case, use IGNORECASE=1

tips awk