Currently viewing the category: "linux"

mac 10.5 freeze when waking form hibernation with VM running parallels

by shing fai it consult on September 11, 2011 · No Comments

OS: Mac 10.5.8 Parallels version: Parallels desktop 7 for MAC Mac hibernate mode: 5 Symptom: mac freeze when waking from hibernate mode with VM running Possible solution: Change hibernate mode to 1 1.Check the current setup pmset -g | grep hibernatemode 2. Change the sleep mode setting sudo pmset -a hibernatemode 1 —-hibernate mode info—— [...]

real time traffic analysis in Linux

by shing fai it consult on May 27, 2011 · No Comments

tools: ibmonitor for real-time traffic consumed: http://ibmonitor.sourceforge.net/ jnettop for real-time traffic visual analysis : http://download.fedora.redhat.com/pub/epel/4/i386/repoview/jnettop.html tcpdump for real-time packet capture iptables for block unwanted traffic tcpdump howto: 1. dump traffic without port 22 and write it to file log.cap tcpdump -i eth0 not port 22 -n -w log.cap 2. tcpdump for dummies: http://www.alexonlinux.com/tcpdump-for-dummies iptables in [...]

Bash script to find an delete specific user process

by shing fai it consult on April 13, 2011 · No Comments

for x in `ps aux|grep imap|grep emily|awk ‘{print $2}’`; do kill -9 $x;done

install virtualbox in centos 5.5

by shing fai it consult on March 11, 2011 · No Comments

1. get the virtual box software 2. make necessary system changes yum install dkms

useful commands

by shing fai it consult on March 11, 2011 · No Comments

To perform groupinstall: # yum groupinstall ‘KDE’ To get the available and installed groups: # yum grouplist Multi -boot for Windows and Linux 1.In Linux, dd if=/dev/hda2 of=/linux.bin bs=512 count=1 2. copy the linux.bin file to Windows c:\ 3. In Windows, add following in the boot.ini c:\linux.bin=”Linux”

compare 2 files under Linux

by shing fai it consult on December 8, 2010 · No Comments

Method 1 : use command comm to compare two sorted files line by line. Usage: comm [OPTION]… FILE1 FILE2  With no options, produce three-column output. Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and column three contains lines common to both files. -1 suppress lines unique to FILE1 -2 [...]

useful mysql commands

by shing fai it consult on November 25, 2010 · No Comments

Set a root password if there is on root password. # mysqladmin -u root password newpassword Update a root password. # mysqladmin -u root -p oldpassword newpassword Login to remote host. # /bin/mysql -h hostname -u root -p Login locally. # /bin/mysql -u root -p Create a database on the sql server. mysql> create database [...]