Well I just learnt about a cool command: cut. Under UNIX, cut allows you to cut some portion of lines of a file. This is really cool.
Some examples:
for a file (with fields separated with \t):
$-> cat fileline 1 FIELD 2 FIELD 3 FIELD 4 FIELD 5 FIELD 6 FIELD 7
line 2 FIELD 2 FIELD 3 FIELD 4 FIELD 5 FIELD 6 FIELD 7
line 3 FIELD 2 FIELD 3 FIELD 4 FIELD 5 FIELD 6 FIELD 7
line 4 FIELD 2 FIELD 3 FIELD 4 FIELD 5 FIELD 6 FIELD 7
line 5 FIELD 2 FIELD 3 FIELD 4 FIELD 5 FIELD 6 FIELD 7
$-> cat file|cut -c '2-4'FIELD 2 FIELD 3 FIELD 4
FIELD 2 FIELD 3 FIELD 4
FIELD 2 FIELD 3 FIELD 4
FIELD 2 FIELD 3 FIELD 4
FIELD 2 FIELD 3 FIELD 4
and you can stick a file back together using paste. Isn't the unix philosophy cool? Or am I a geek?
