topic Re: script pid in Operating System - HP-UX

script pid

Nobody's Hero — Mon, 14 May 2007 13:47:43 GMT

If my file looks like this:

1506
/usr/lib/sendmail -bd -q15m

how can I strip out the second line?
All I want is the pid number?

10x RPM...

Re: script pid

Sundar_7 — Mon, 14 May 2007 13:49:01 GMT

awk 'NR==1 {print}' /tmp/infile

head -1 /tmp/infile

Re: script pid

A. Clay Stephenson — Mon, 14 May 2007 14:06:43 GMT

Actually, if all you want to do is read one line of a file then simply read it. The shell's read command will read one line of a file and no external command like awk is required.

read PID < myfile
echo "Pid = \"${PID}\"."

Re: script pid

Ivan Ferreira — Mon, 14 May 2007 14:35:15 GMT

Lines that contains only numbers:

grep -E "^[0-9]*$" filename

Re: script pid

James R. Ferguson — Mon, 14 May 2007 14:40:25 GMT

Hi:

More than one way, sure:

# sed -n '1p' file

...prints only the first line.

Regards!

...JRF...