Sed script.

[kashif1]

hi

can anyone please help me to write a sed script with following requirements.


delete all the lines in a file that ends with either alpha, beta or gamma.

i can write 3 different statements for it but i wnt to combine it in one statement. help me plz


sed 's|[/a-z A-Z_0-9.-]*alpha$| |' File.txt
sed 's|[/a-z A-Z_0-9.-]*beta$| |' File.txt
sed 's|[/a-z A-Z_0-9.-]*gamma$| |' File.txt


thanks in advance.

[lomcevak]

Use extended regexs. You'll have to use the -r option:

-r, --regexp-extended

use extended regular expressions in the script.

sed -r 's|[/a-z A-Z_0-9.-]*(alpha|beta|gamma)$| |' File.txt

[kashif1]

Thanks, its working now. Thanks again.

[past]

i dont create new topic, so i will write there.
i have a problem with my script using sed.
bash script must prints out the number of usernames that begin with each letter of the alphabet from some file.
But: sed -e 's/\.//g' -e 's/ /\
/g' "$1" | tr 'A-Z' 'a-z' | sort | uniq -c | sort -nr print and count the lines,but not first letters.