Enable outbound FTP ports on VMware ESX server.
The operating system on VMware ESX 3 is a striped down version of linux. It has only the bare necessities for VMware to function. I wanted to configure a cron …
Read MoreAuthor: Andrew Lin
Awk the swiss army knife of the Unix toolkit.
The awk command is very handy when you need to filter the contents of a file, a pipe,or keyboard. It searches each line of input for patterns that you specify …
Read MoreExplanation of Standard input-output in Unix and Linux
Once a command is run, a process is created. This process then opens three flows: stdin, called the standard input, where the process will read the input data. By default …
Read MoreConfiguring the SNMP settings on a Cisco MDS 9000 series Fabric switch.
Simple Network Management Protocol (SNMP) is used to monitor network attached devices. Any changes in the status of the monitored device is transmittted to an SNMP log collection server. The …
Read MoreHow to automate ftp login and file transfer
As a Linux/Unix server administrator I ran into an occasion where I had to automate the file transfer via ftp to a remote server. I had to create a shell …
Read MoreAuditing the cron jobs scheduled on the Unix or Linux server.
I have recently taken ownership of a Solaris 5.9 server and am in the process of migrating the applications over to a recent release. I decided to audit the applications …
Read MoreGoogle maps street view car in Toronto, Ontario
I was on my way to work this morning driving west on the 407 in Richmond Hill. As I got towards Leslie Avenue, a mid size green coloured card speed …
Read MoreHow to backup and compress a folder in one step, using tar and gzip.
If disk space is limited on your Linux or Unix server and you wish to backup a folder or file that is larger than the available free space. Then creating …
Read MoreHow to change Red Hat Linux to boot to command line mode from Gnome.
Changing the default runlevel of the Red Hat Linux server can switch the bootup from Gnome to command line mode. You can make the changes consitent by editing the /etc/inittab …
Read MoreHow to upgrade or downgrade ScreenOS using either the WebUI or CLI
I tried uploading the Juniper 5GT screenOS file name ns5gt.6.2.0r2.0 via the WebUI interface. But it kept failing with the error message “File too big or empty”. I then had …
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