Find Fiber Host Bus Adapter WWN On Linux

  If you are looking for HBA wwn on your server just to do zoning or maybe doublecheck that it matches with what you see on FC sswitch just log in to your LInux box and run following: cat /sys/class/fc_host/host*/port_name Output (amount of lines) will depend on how many ports and cards you have in…

kill multiple processes with awk

 ps aux | grep httpd root       329  0.0  0.0 103236   856 pts/0    S+   12:49   0:00 grep httpd root     30954  0.0  1.0 258980 10744 ?        Ss   10:39   0:00 /usr/sbin/httpd apache   30956  0.0  0.6 258980  6196 ?        S    10:39   0:00 /usr/sbin/httpd apache   30957  0.0  0.6 258980  6196 ?        S    10:39   0:00 /usr/sbin/httpd apache   30958  0.0  0.6 258980 …

Centos 6/RedHat 6 network cards MAC adress

With CentOS 6 everthing is handled by udev now. Go into /etc/udev/rules.d and delete the 70-persistent-net.rules file and reboot. If you open it berfore hand you will most likey see the original NIC MAC listed as eth0 and the new one as eth1. Deleting the file forces the detection process to run again at boot with no…

Red Hat Linux – Can not find the Gnome enviroment.

Installed nxserver and trying to connect with nxclient. Error message: Install following: “X Window System” Mandatory Packages: yum install bitmap-fonts desktop-backgrounds-basic xorg-x11-drivers xorg-x11-fonts-100dpi xorg-x11-fonts-75dpi  xorg-x11-fonts-ISO8859-1-100dpi  xorg-x11-fonts-ISO8859-1-75dpi xorg-x11-fonts-Type1 xorg-x11-fonts-misc xorg-x11-fonts-truetype xorg-x11-server-Xorg xorg-x11-xauth xorg-x11-xfs xorg-x11-xinit “GNOME Desktop Environment” Mandatory Packages: yum install control-center  gnome-applets gnome-panel gnome-session gnome-terminal  metacity nautilus yelp Also follwing might also be required: bitmap-fonts…

How to identify heavy write to disk?

Info is from here You can easily see what process is consuming the most I/O bandwidth: dstat -ta –top-bio dstat -ta –top-io The first being the top block I/O, and the second the top I/O (including cached). This may help you validate if this is what you expect (both as consumer as well as the…

/usr/bin/sw-engine: /etc/mail/spamassassin/cmae/cloudmark/lib/libstdc++.so.6: version `CXXABI_1.3.1′ not found (required by /usr/bin/sw-engine)

[root@localhost ~]# /usr/local/psa/bin/admin –show-password /usr/bin/sw-engine: /etc/mail/spamassassin/cmae/cloudmark/lib/libstdc++.so.6: version `CXXABI_1.3.1′ not found (required by /usr/bin/sw-engine) Solution: cd /etc/mail/spamassassin/cmae/cloudmark/syslib/ mv libstdc++.so.6 libstdc++.so.6.old cp /usr/lib64/libstdc++.so.6 libstdc++.so.6 /usr/local/psa/bin/admin –show-password # – works fine now  

Linux commands

  Command Description • apropos whatis Show commands pertinent to string. See also threadsafe • man -t man | ps2pdf – > man.pdf make a pdf of a manual page which command Show full path name of command time command See how long a command takes • time cat Start stopwatch. Ctrl-d to stop. See…