Posts Tagged ‘ Linux ’

In the past I have written articles about how to create a RDM to LUN disk mapping for VMware ESX 3. http://www.gamescheat.ca/2009/10/scripts-to-automate-the-process-of-identifying-and-compiling-an-rdm-to-lun-mapping-list-for-vmware-esx-30/ and http://www.gamescheat.ca/2009/10/how-to-identify-and-compile-an-rdm-to-lun-mapping-list-for-vmware-esx-30/ The procedure to identify the path for the RDM (raw disk mapping) to LUN (disk on SAN) on Vmware ESX 4 is different from Vmware Esx 3. There are a...
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List the status of all swap areas. # swap -l swapfile dev swaplo blocks free dev/dsk/c0t0d0s1 32,9 16 8425712 8425712 The output has five columns: path The path name for the swap area. dev The major/minor device number in decimal if it is a block special device; zeroes otherwise. swaplo The swaplow value for...
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If you need to find out which file in a directory contains a specific word then the grep command is your friend. Here is an example, if you wanted to find out which file in the directory /home contains the word groundhog. grep –i “groundhog” /home/* /home/shadow:Today is groundhog day The –i option means...
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I needed to determine the amount of time it would take to archive large amount of data on my unix server. If I had infinite amount of free time I could sit in front of the screen with a stop watch. But the better way is to create a script that would record the...
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My fat fingers inadvertently created a directory on my unix server with special characters. I could not access this directory nor could I delete it. When I listed the directory using the command ls –b, I could see all the funny characters. ls –b scritps010/010/010/010 I tried every command I could think of, rmdir...
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The root drive on my Solaris server was full and I needed to find out what file was the largest. The du command can list the size of the files in a directory, you can then use the sort command to display the results in numerical order (by size). Below is an example of...
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I just installed Solaris 10 on a new SPARC server, now I need to migrate the userids and groups over. The optimal way to migrate the userids while retaining their password is to simply copy three files from the Solaris 9 server over to the new Solaris 10. The three files are /etc/passwd, /etc/shadow,...
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I got this strange error message when launching the vi text editor during the installation of Solaris 10, I don’t know what kind of terminal you are on – all I have is ‘unknown’. The reason for this is becasue the terminal emulation has not been defined in your environment. To configure the terminal...
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I just installed and configure a new Sun SPARC Enterprise M3000 server. It seems that when I telnet to the sever from a remote computer it takes a while to connect and get a login prompt. Once I am able to login in, speed is not an issue. After some research I figured out...
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I built this Red Hat Enterprise Linux 5 server in VMware a while ago and forgot the root password. I can log in as a user but it does not have the privileges to change the root IDs password. Well, fear not you can reboot the server into single user mode and change root’s...
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