You are correct. I never program bash scripts. I have always used bourne only to ensure the script will run on any server I put it on without going through hoops (just how I was raised). Most modern shells have a Bourne-shell mode when called as /bin/sh. Many modern linux distros have sh either hardlinked or symlinked to bash. Didn't realize you could do string manipulation like that (I usually just pipe to cut)
=G=
From: Kip, D. - GDI/SNB [mailto:d.kip at gdi.minjus.nl] Sent: Thursday, March 19, 2009 6:43 AM To: hobbit at hswn.dk Subject: RE: [hobbit] RE: SMS Alerts
Your suggestion indicates you do not understand what he was trying to do :) He was trying to cut the hostname short, by having a maximum of 160 characters. http://tldp.org/LDP/abs/html/string-manipulation.html (see the section Substring Extraction)
It is a feature for BASH shells, but maybe some modern Bourne shells have it as well (I know I used it on some modern HP/UX with their standard /bin/sh) So putting the :0:160 outside the brackets would not yield the desired result. On the other hand, hostnames rarely go that long, so cutting it short seems quite useless.
I am not familiar with gnokii, but does it actually take a message from stdin? Or does it normally use a 'gnokii --sendsms <number> <message>' format? Otherwise, I don't see anything wrong with your syntax.
Van: Galen Johnson [mailto:Galen.Johnson at sas.com] Verzonden: donderdag 19 maart 2009 7:53 Aan: hobbit at hswn.dk Onderwerp: [hobbit] RE: SMS Alerts try: echo "${BBHOSTNAME}:0:160 cpu is red" | gnokii --sendsms 1234567890
From: Jarrod Hodder [mailto:Jarrod.Hodder at pmg.net.au] Sent: Thursday, March 19, 2009 12:18 AM To: hobbit at hswn.dk Subject: [hobbit] SMS Alerts
Hello,
I am trying to get a custom message sent from Hobbit via sms. All I want is the hostname with a short message sent after it.
So far I have
#!/bin/bash echo "${BBHOSTNAME:0:160} cpu is red" | gnokii --sendsms 1234567890
I am using gnokii as the gate way. I think my variable is what is causing the problem, can someone see where I have gorn wrong?
Jarrod Hodder
Paradigm Management Group 110 Livingston Avenue Kambah, ACT 2902
1300 735 370
Jarrod at pmg.net.au