Submit you HP-Ux tips and tricks and win easy 10points

[Jason Berendsen]

An easy way to get yesterdays date instead of writing a 30 line script.

YESTERDAY=$(TZ=$(date +%Z)+24; date '+%b %e')

This has been very usefull for me with backups.

[Animesh Chakraborty]

Move or delere all files under a directory older hat 15 days.
#find /ctx/sap/interface/cnzl -mtime +15 -exec mv {} /temp

A good command to copy a file system to a new directory.
#cd /sourc_dir
#find . -depth -print|cpio -pdmv /dest_dir

[Michael Tully]

Since I've been like "Bob the Builder" lately,
and been mirroring new systems disks.

# pvcreate -B /dev/rdsk/c2t6d0
# vgextend /dev/vg00 /dev/dsk/c2t6d0
# mkboot /dev/rdsk/c2t6t0
# mkboot -a "hpux -lq(;0)/stand/vmunix" /dev/rdsk/c2t6d0
# lvlnboot -R
# for LVOL in /dev/vg00/lv*
> do
> echo $LVOL
> lvextend -m 1 $LVOL
> done

[Kenny Chau]

Tip 1 - Never let the HP Engineer left before the system back to normal after repair (Sorry to all HP Engineers), this is what my manager said.
Tip 2 - In cluster environment, before shutdown any node, disable all packages switching, halt node and shutdown the node.
Tip 3 - If adding or removing disks from SC10, remember to shutdown all machines which connected to the SC10 and also shutdown the SC10 before removing or adding disks.

Good luck.
Kenny.

[Michael Tully]

Removing tapes from my tape library with OmniBack.

Attached is a fairly simple script to do this. It is really handy if you don't have a tape jockey.

-Michael

[Printaporn_1]

if you suscpect networking problem , like IP address conflict:

#netfmt -t 50 -f /var/adm/nettl.LOG00 > /tmp/nettl

then check /tmp/nettl

[Printaporn_1]

system panic / core dump reading overview.
HP-UX 11.0 already have q4 package in /usr/contrib/bin

1. cd /var/adm/crash/crash.0
#/usr/contrib/bin/q4prep
q4 library files being created in /var/adm/crash/crash.0/q4lib

2.cd q4lib
#cp sample.q4rc.pl ~/.q4rc.pl
3. cd ..
#q4 -p
@(#) q4 $Revision: 1.79a $ $Date: 97/09/08 12:00:22 $ 0
Reading kernel symbols ...
Reading kernel data types ...
Initialized PA-RISC 2.0 address translator ...
Initializing stack tracer ...
Get the latest Q4 news by typing "news".

q4> include analyze.pl
loading ./q4lib/analyze.pl ...
loading ./q4lib/uname.pl ...
loading ./q4lib/misc.pl ...
loading ./q4lib/uptime.pl ...
loading ./q4lib/adjust.pl ...
loading ./q4lib/messagebuffer.pl ...
loading ./q4lib/addresses.pl ...
loading ./q4lib/tables.pl ...
loading ./q4lib/processors.pl ...
loading ./q4lib/crashes.pl ...
loading ./q4lib/rpb.pl ...
loading ./q4lib/traces.pl ...
loading ./q4lib/globals.pl ...
loading ./q4lib/processes.pl ...
loading ./q4lib/commands.pl ...
loading ./q4lib/credentials.pl ...
loading ./q4lib/threads.pl ...
loading ./q4lib/user.pl ...
loading ./q4lib/vm.pl ...
loading ./q4lib/vm_vfddbd.pl ...
loading ./q4lib/files.pl ...
loading ./q4lib/vfs.pl ...
loading ./q4lib/inode.pl ...
loading ./q4lib/buf.pl ...
q4>run Analyze UAP > ana.out

-----
then waiting till finish , or in another session
cd /var/adm/crash/crash.0
vi ana.out
search for stack


Stack trace from the first crash event:
stack trace for event 0
crash event was a TOC
FUNC PC SP FMP SSP
idle+0xa78 0.0x135a60 0.0x0'0d20c1f0 0.0x0'0d20c1e0 n/a
swidle_exit+0x0 0.0x1380ac 0.0x0'0d20c050 0.0x0'0d20c040 n/a

==================
now check patch database for similar stack.
you may come up with patches installation to fix this panic.

[Scott Van Kalken]

This is a favourite of mine for a vgcfgbackup before you run your daily backup.

#!/bin/sh
PATH=/bin:/sbin:/usr/bin:/usr/sbin

VG=$(vgdisplay |grep "VG Name" |awk '{print $NF}')
HOSTNAME=$(hostname)
logger -p local0.info "INFO: LVM backups for host <$HOSTNAME> starting..."
for v in $VG ; do
vgcfgbackup $v
if [ $? -ne 0 ] ; then
logger -p local0.err "ERROR: LVM backups failed..."
fi
done
logger -p local0.info "INFO: LVM backups for host <$HOSTNAME> finished..."

[Marc Dijkstra]

Wodish, I see Bill did not put his memory usage in! Used it last night to find some rather nasty memory leaks on an 11.00 box (the famous mib2agt leak)

UNIX95= ps -e -o ruser,vsz,pid,ppid,args|sort -rnk2 |more

This gives the total memory usage per process.

P.S: That mib2agt leak is fixed with the new OV EMANATE142 patch PHSS_24945.

MND

[Stefan Farrelly]

Heres a script even a non root user can run to see how much free memory is on a box;

let x=$(grep -i physical: /var/adm/syslog/syslog.log|head -1|awk '{print $7}')/1048
let z=$(vmstat|tail -1|awk '{print $5}')*4096;let z=$z/1000000
let free=100000/$x*$z
let free=$free/1000
let free=100-$free
echo "$x Mb physical memory \n$z Mb memory free \n$free % used"

And a nifty C program to move a running process onto a particular CPU - great on servers with many CPU's and some process is hogging CPU 0 - which HP-UX really needs to use to keep everything running fast....

Cheers,

Stefan


#include
#include
#include
#include
#include

main(argc,argv)
int argc;
char *argv[];
{
gid_t sgid;
int i;
int pid;

if (argc < 2) {
printf("Usage: setproc spunum pid0 [pid1 ... pidn]\n");
exit(1);
}
sgid = atoi (argv[1]);
i = argc;
printf("Attempting to set process affinity for processor %d\n",sgid);
while (i-- >2) {
pid = atoi(argv[i]);
if ((sgid = SETPROCESS(sgid, pid)) < 0)
perror("setprocess failed");
printf ("processor %d pid = %d\n", sgid, pid);
}
}