Re: Need /bin/sh script help
Garrett Cooper wrote: Hello again all, Just making a series of sh scripts to help automate updating and whatnot of my fileserver (since I am trying to avoid having mistakes occur with my system, and maybe help the community out a bit by providing some decent means of updating their own machines), and I was wondering if anyone could help me out with the following script I've developing (the grep if statements are incorrect..): #!/bin/sh # KC=; cd /usr/src; if [ -n `grep -e s/KERNCONF=/ /etc/make.conf` ] # want to look for KERNCONF in /etc/make.conf then echo enter in the kernel conf file full pathname:; read KERNCONF; KC=KERNCONF=$KERNCONF; fi if [ -n `grep -e s/NO_CLEAN=*yes*/ /etc/make.conf` ] // want to look for NO_CLEAN in /etc/make.conf -- is this really necessary? then cd sys; echo cleaning sources make clean; make cleandir; cd ..; fi echo building kernel; make buildkernel $KC; echo installing kernel; make installkernel $KC; echo kernel compile complete. reboot to try new kernel; TIA, -Garrett Thank you all for the replies and the advice. I still need to fix the grepping, but I hope that any and all problems will be resolved soon once I stick my mind to it. As for what worked and was changed, what didn't, and why I am doing this: What worked/was changed: -Removing C++ style comment. Lol. -Adding in a loop for read so the kernconf variable is not set to null. What didn't work: -Using make -V (it came up with nothing... oddly enough even though the manpage said it would work). -grep call when I didn't redirect stuff to stderr (suppose I should do that). Why I am doing this: If you're probably reading the mailing list from time to time, you'll have noticed I had some issues last week with cvsup and my system sources. I've basically come to the conclusion that the cause for my issue is the fact that I had a cron job which would update my system/kernel sources, as well as my ports, and my system/kernel sources were synced DURING a build, which lead to quite a few issues with the build and installworld, I discovered after rebooting the machine the next morning (no errors were encountered though, which was odd). So, in order to scratch the itch, persay, that exists with cvsup and building ports/compiling system stuff, I have created a script which does 'lock' a process, if noted correctly, with a 'semaphore lockfile'. Maybe a call to ps aux would be better, but I found that dealing with a lockfile system would be a much easier way to solve things. Todo Plan: Add an rc-script or something that will run in single-user mode which will help with mergemaster. People should be at the machine when doing this, and my scripts were originally designed so that a person could just run the script and it would do function X on a timed basis (say as a cron job). These scripts aren't meant to replace any resources; they're just here to help automate junk and ensure that things DO get done properly and things DO get updated, with less typing and command memorizing for the admin (I will properly annotate which chapters in the handbook to use and manpages to read for a more in depth reference of what the script does and how it does it). Furthermore, I plan on possibly coming out with a more up to date installcd setup that would have an 'admin pack' as I would call it, or apache, bind9, perl, mysql, ipfw, samba, etc, properly configured with a set of CGI pages that would help simplify system management for people (I am doing this as a project for the house/apt I'm living in since they need a NAT box with extras). So, that's what I have in mind. Questions, comments :) ? -Garrett ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Need /bin/sh script help
On Tuesday 11 April 2006 06:30, Garrett Cooper wrote: cd /usr/src; if [ -n `grep -e s/KERNCONF=/ /etc/make.conf` ] # want to look for KERNCONF in /etc/make.conf if [ `make -V KERNCONF` ] read KERNCONF; KC=KERNCONF=$KERNCONF; fi You need to check that KC actually exists. IIRC a typo will cause GENERIC to build. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Need /bin/sh script help
in message [EMAIL PROTECTED], wrote Garrett Cooper thusly... I was wondering if anyone could help me out with the following script I've developing (the grep if statements are incorrect..): #!/bin/sh # KC=; cd /usr/src; if [ -n `grep -e s/KERNCONF=/ /etc/make.conf` ] # want to look for Well, you did not write what exactly is the problem, as executing the above works as expected. Why do have 'KERNCONF' surrounded by 's/' '/'? In any case, there is not need to see if the returned string length is nonzero. Just use the grep return code send the all the output to /dev/null ... if grep -e '^KERNCONF=' /etc/make.conf /dev/null 21 then ... fi ... or you could also use '-q' and/or '-s' grep options instead of sending output to /dev/null. (I personally would do a bit more strict check to see $KERNCONF is set to value containing characters meeting some criteria, say '\[-._[:alnum:]]+\'.) KERNCONF in /etc/make.conf then echo enter in the kernel conf file full pathname:; I did not know one can specify the kernel configuration path, not just the basename. read KERNCONF; KC=KERNCONF=$KERNCONF; fi if [ -n `grep -e s/NO_CLEAN=*yes*/ /etc/make.conf` ] // want to look for ^^ ^^ Wrong kind of comment character. See above comments about grep(1) usage. - Parv -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Need /bin/sh script help
On Mon, 10 Apr 2006 22:30:32 -0700 Garrett Cooper wrote (my brief response follows all of his text): Just making a series of sh scripts to help automate updating and whatnot of my fileserver (since I am trying to avoid having mistakes occur with my system, and maybe help the community out a bit by providing some decent means of updating their own machines), and I was wondering if anyone could help me out with the following script I've developing (the grep if statements are incorrect..): #!/bin/sh # KC=; cd /usr/src; if [ -n `grep -e s/KERNCONF=/ /etc/make.conf` ] # want to look for KERNCONF in /etc/make.conf then echo enter in the kernel conf file full pathname:; read KERNCONF; KC=KERNCONF=$KERNCONF; fi if [ -n `grep -e s/NO_CLEAN=*yes*/ /etc/make.conf` ] // want to look for NO_CLEAN in /etc/make.conf -- is this really necessary? then cd sys; echo cleaning sources make clean; make cleandir; cd ..; fi echo building kernel; make buildkernel $KC; echo installing kernel; make installkernel $KC; echo kernel compile complete. reboot to try new kernel; TIA, -Garrett I see a problem in the line if [ -n `grep -e s/KERNCONF=/ /etc/make.conf` ] # want to look for you should have double-quotes around the `grep ... conf` because it is likely to produce more than one token and so the [ -n ... ] statement violates the syntax (there should be exactly 1 token between the -n and the ] , even no token there is an error, the way that is handled is to quote it. I am writing this quickly without bringing up my FreeBSD system to check it. Good luck. Another thing you can do to avoid quoting (and the long strings that may result) is use the -c option of grep and check the number resulting. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Need /bin/sh script help
On Tue, 11 Apr 2006, [EMAIL PROTECTED] wrote: On Mon, 10 Apr 2006 22:30:32 -0700 Garrett Cooper wrote (my brief response follows all of his text): Just making a series of sh scripts to help automate updating and whatnot of my fileserver (since I am trying to avoid having mistakes occur with my system, and maybe help the community out a bit by providing some decent means of updating their own machines), and I was wondering if anyone could help me out with the following script I've developing (the grep if statements are incorrect..): I see a problem in the line if [ -n `grep -e s/KERNCONF=/ /etc/make.conf` ] # want to look for you should have double-quotes around the `grep ... conf` because it is likely to produce more than one token and so the [ -n ... ] statement violates the syntax (there should be exactly 1 token between the -n and the ] , even no token there is an error, the way that is handled is to quote it. I am writing this quickly without bringing up my FreeBSD system to check it. Good luck. Or simply use the error status of grep, no [ invocation: if grep -q ... then ... fi Note that if you're looking at automating the update process you should probably pay careful attention to the world/kernel update process described in the handbook; there are steps (like an initial mergemaster -p) that you will want to include. -- jan grant, ISYS, University of Bristol. http://www.bris.ac.uk/ Tel +44 (0)117 3317661 http://ioctl.org/jan/ If you have received this email in error, do whatever the hell you want with it. It's not like I can stop you anyway. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
