How would I split a file based on the location of a string, basically I want all entries above the string unix in this example

1
2
3
4
unix
5
6
7

Thanks,
Chuck

One way....I was nice and didn't put it in my standard csh...

#!/bin/ksh
file="file1"
while read -r xx
do
if [ "$xx" = "unix" ]
then
file="file2";
else
echo "$xx" >> $file ;
fi
done < $1

Original file has what you mentioned.

File1 ends up with
1
2
3
4
File2 ends up with
5
6
7
8

If you want the 'unix' in one of the files, just move the echo or add another.

I finally got this to work with just sed...

#! /usr/bin/sed -nf
s/unix/unix/
t loop
w file1
d
: loop
n
w file2
b loop

This awk exits when it sees the unix line. To include the unix line into the file, put the print command first. If you want the unix grep string anchored to beginning-of-line, use /^unix/.

awk '/unix/{exit};{print}' myfile > file1