Run a command in bg simultaneously with


 
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Old 06-04-2009
Run a command in bg simultaneously with

Hi,
I want to run the command below in the background:
Code:
tail -f file.txt | grep "pattern"

The file file.txt will start getting its contents written after this command has started getting run.
So the flow will be like this
Code:
tail -f file.txt | grep "pattern"
#The line below will write data to file.txt
./script100.sh

Now if the pattern is found then the user will be notified with some message.
Any idea people?
Thanks a lot Smilie.
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ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME
zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files SYNOPSIS
zgrep [grep-flags] [--] pattern [files ...] zegrep [grep-flags] [--] pattern [file ...] zfgrep [grep-flags] [--] pattern [file ...] DESCRIPTION
zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1). The grep-flags and pattern arguments are passed on to grep(1). If an -e flag is found in the grep-flags, zgrep will not look for a pattern argument. zegrep calls egrep(1), while zfgrep calls fgrep(1). EXIT STATUS
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0. SEE ALSO
egrep(1), fgrep(1), grep(1), gzip(1), zcat(1) AUTHORS
Thomas Klausner <wiz@NetBSD.org> BSD
December 28, 2003 BSD