sys64738

lvm_handling - [Prepare new disk/VolumeGroup/Logical Volume]

root — 2017-04-16T23:50:41+00:00

Prepare new disk/VolumeGroup/Logical Volume Add disk/LUN to server. Have a look at Rescan SCSI bus for scanning the SCSI bus online. Alternative reboot the server. Prepare PV's with pvcreate /dev/ For FC LUN's use /dev/mapper/mpath according to Red Hat DM Multipath Configuration & Administration

start

root — 2015-04-12T17:24:53+00:00

This wiki is most about Linux/Unix stuff but all respect to the good old C64.. Linux Goodies Solaris Goodies Misc *NIX Goodies MySQL Oracle AIX Greetings from Peter Boysen alias pebo.

raid_controller_utils

root — 2014-10-22T10:05:05+00:00

HP has replaced command tool hpacucli with hpssacli for later versions of HP Raid Controllers. This is really stupid done by HP. The genius changing a command name should be punished by whip. In order to get my existing scripts to work, I have created a soft link from hpacucli -> hpssacli in /usr/sbin.

sorting

root — 2014-10-09T09:50:33+00:00

sort -t . -k 1,1n -k 2,2n -k 3,3n -k 4,4n

linux_goodies

root — 2014-10-09T09:29:16+00:00

A collection of nice Linux commands/tips & Tricks. Mostly for Red Hat and Red Hat based distributions. * Building and signing RPM packages * Cluster SSH * Deprecated Linux networking commands and their replacements * Determine network driver in use

san_fc

root — 2013-12-18T12:40:27+00:00

Determine FC ID (WWN) RHEL 4.x or earlier To find the WWN run the cat /proc/scsi/adapter_type/n command, where adapter_type is the host adapter type, and n is the host adapter number for your card. In most cases, the adapter type is qla2xxx. cat /proc/scsi/adapter_type/ RHEL 5.x or later The adapter WWN information can be found:

ssl_handling_with_openssl

root — 2013-12-05T11:44:12+00:00

Generate private key Generate private key with a bit lenght of 2048. 2048 bits is minimum for this time of writing. openssl genrsa -out 2048 Generate CSR Generate CSR (Customer Signing request) using private key. openssl req -new -key -out Fill out questions when asked. CN is very important. Provide CSR to CA for signing.

list_webserver_information

root — 2013-11-20T15:36:24+00:00

In case you want to determine webserver and OS information for a given site use curl or wget. Some sites will reveal a lot of information some is not so informative. # curl -I http://# wget --server-response --spider http:// https can be used as well

generate_hashed_password_string

root — 2013-11-14T09:27:38+00:00

If you manually want to change the password field in the shadow file, the md5 hashed string can be generated like this: # openssl passwd -1 Where the parameter is the password in clear text. Output will be a md5 hashed string like this: $1$t/Y0/ENi$PccO/XwuuZb4q/uhfh4Yf0 For RHEL6 following python code can be used:

installing_fedora_16 - [Configure kwallet]

root — 2013-11-08T09:06:37+00:00

Please note: No guarantees it will work for you. Activate RPMfusion repositories: su -c 'yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm'yum install bluefish yum install smplayer yum install clusterssh yum install k3b-extras-freeworld yum install gstreamer-plugins-bad gstreamer-ffmpeg gstreamer-plugins-ugly yum install kate yum install keepa…

yum_rpm_handling

root — 2013-09-27T10:55:12+00:00

List query tags rpm --querytags List package that provide file rpm -q --whatprovides Example: rpm -q --whatprovides /usr/bin/lsscsi lsscsi-0.23-2.el6.x86_64 List files provided by installed rpm package rpm -ql *package* List files provided by rpm package placed in current folder rpm -qlp *package* List scripts provided by installed rpm package rpm -q --scripts *package* List scripts provided by rpm package placed in current folder rpm -qp --scripts *package* List package vendors …

time_calculations

root — 2013-09-19T08:17:21+00:00

Epoch time calculations Days since Epoch echo $(date +%s)/86400 | bc echo $(($(date +%s)/86400)) let days=$(date +%s)/86400 ; echo $days Days since Epoch without GNU date If perl is installed: perl -e ' $days=int(time()/86400);print "$days\n"; ' Current Epoch time on system without GNU date perl -e 'print time(), "\n" ' Convert from Epoch to date with GNU date date -d @ Example: date -d @1368023418 Wed May 8 16:30:18 CEST 2013 Convert from Epoch to date with perl perl -e "print …