Return to Answer

Got rid of useless cat pipe

edit approved Jan 11, 2018 at 9:33

cat $file | egrep -v '^;|^$' $file

that will exclude lines that begin with the ';', and empty lines.

in regex, ^ indicates the beginning of a line, and $ the end of a line, so ^$ specifies lines where the start of line character and the end of line character are right next to each other.

cat $file | egrep -v '^;|^$'

that will exclude lines that begin with the ';', and empty lines.

in regex, ^ indicates the beginning of a line, and $ the end of a line, so ^$ specifies lines where the start of line character and the end of line character are right next to each other.

egrep -v '^;|^$' $file

that will exclude lines that begin with the ';', and empty lines.

in regex, ^ indicates the beginning of a line, and $ the end of a line, so ^$ specifies lines where the start of line character and the end of line character are right next to each other.

Source Link

answered Dec 7, 2011 at 5:25

Tim Kennedy

20.2k
5
42
58

cat $file | egrep -v '^;|^$'

that will exclude lines that begin with the ';', and empty lines.

in regex, ^ indicates the beginning of a line, and $ the end of a line, so ^$ specifies lines where the start of line character and the end of line character are right next to each other.