Hi, I have figured out several line numbers that need to be deleted from a file. Say lines_to_rm="8 9 10 11 34 35 78 79" I have tried adding a "d" to each number & passing the "8d 9d 10d 11d" to sed in one go, it doesn't work. From address ranges, I take it one can do consecutive lines like: sed '8,9d' file but apparently I can't do '8,9,14,15d' any idea to do it in one line?? Thanks

====> 1. input file $ cat myfile.txt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ====> 2. script $ cat 5.sh #!/bin/ksh set -x DEL=d cat <<EOF > sed.txt 8d 9d 10d 11d 34d 35d 78d 79d EOF sed -f sed.txt myfile.txt ====> run 5.sh script $ ./5.sh + DEL=d + cat + << EOF + > sed.txt + sed -f sed.txt myfile.txt 1 2 3 4 5 6 7 12 13 14 15 Luke Chi

A better way: sed '8d;9d;10d;11d;34d;35d;78d;79d' myfile.txt Luke Chi

I knew there must be some character to separate. Just couldnt find it. Thanks Luke!