When you have something like this:
[root abcux]/tmp # cat lines.txt
line 1
line 3
line 4
line 9
line 10
#line 12
#line 15
line 16
[root abcux]/tmp #
but you want to exclude the blank lines and line starting with "#", do this...
[root abcux]/tmp # cat lines.txt | egrep -v "^#" | egrep -v "^$"
line 1
line 3
line 4
line 9
line 10
line 16
[root abcux]/tmp #
--- Update at 15:19
Another set of trick is to issue this command (thanks yoe!)
[root abcux]/tmp # cat lines.txt | egrep -v "^#" | egrep "."
line 1
line 3
line 4
line 9
line 10
line 16
[root abcux]/tmp #
Tadaa.
Friday, August 10, 2007
Removing blank lines using grep
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1 comment:
another way of getting rid of blank lines
#cat line.txt | egrep -v "^#" |egrep '.'
bilo nak mai minum2 sinih? pagi2 aku tadak geng la heheheh
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