UNIX for Dummies Questions & Answers

hi,

I'm trying to use sed to erase everything, and including the ending parenthesis. For example:
input: blah blah blah (12355)this is what i want.
output: this is what i want.

how would i do this?
i found an example online that does the opposite:
sed \"s|test.*||g\" file1 > file2";

but when i reverse it, it doesn't do anything. Any ideas?

thanks,
gammaman

echo "blah blah blah (12355)this is what i want" | sed 's/.*)\(.*\)$/\1/'

Cheers
ZB

thanks! this helped a lot

do you also know how I can erase only the blank lines of a huge file?

I was thinking something similar to this, but this might also erase the blank spaces on lines with words?
sed "s|*[]*||g" huge_file;

thanks,
gammaman

Code:

sed '/^[    ]*$/d' huge_file

[ ] contains one space and one TAB character.

However perl would probably be a better tools to do this to a hugh file.

to remove all the blank lines, you could also try ...

grep -v "^$" huge_file