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Wednesday November 25, 2015

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Latest coolcommands

coolcommand: how to debug VIOS padmin commands
Example: export CLI_DEBUG=33
[show me the details]
coolcommand: how to see the MAC address in a tcpdump
Example: tcpdump -i en0 -vvv -n -s 1024 -e
[show me the details]
coolcommand: how to mount an ISO file in AIX v6 and above
Example: loopmount -i /iso/dvd.iso -l loop0 -o "-V cdrfs -o ro" -m /mnt/dvd
[show me the details]
coolcommand: how to check if your linux server is a VMware virtual machine
Example: lspci|grep -i vmware
[show me the details] persona Download the Firefox Persona now! persona is courtesy of Ronald "Ronybaby" Veilleux

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Welcome to is a search engine for UNIX system administrators. Our database provides access to useful commands for all flavours of UNIX including:

Sun Solaris IBM AIX HP/UX
SGI Irix Compaq Tru64 FreeBSD is NOT is not an online database of man pages but rather a query tool to find commands or one-line scripts which provide a function in a UNIX environment. is cool because

We not only provide a searchable database of commands and one-line scripts, we also allow you to search by category making it easier to find that command you are looking for. Each coolcommand provides a summary, description and example to make your life as a sysadmin easier.

Why become a member of ?

If you register yourself on, you will be able to comment or make corrections to a coolcommand or even submit your own coolcoomand.

To register, simply put in a valid email, and we will email you a temporary password. It is completely free so, enjoy!

We hope you find useful and spread the news about us to your fellow sysadmins.

Did you know ?

When you use the Search or Advanced Search page to run your queries the search results are sorted alphabetically.

If you wish to have your results sorted by relevancy, then select the Full text search button on the Advanced Search page before hitting submit.
When a coolcommand is common across several flavours of UNIX, the command is classified in the General UNIX category.
A help page is available here to explain how the full text search works.

Add coolcommands search to Firefox browser !

You can now add the search engine to your Firefox browser.

Simply go here and type "coolcommands" in the Site Name search box and then click on "Find search plugins".

In the search results, click on the search engine plugin name and it will install automatically in your Firefox browser!

That's it, now you can search from your Firefox browser search bar !

Random coolcommands

coolcommand: how to set IBM AIX for full core dumps and files to unlimited
Example: ulimit -c unlimited; ulimit -f unlimited; ulimit -a
[show me the details]
coolcommand: how to disable "icmp echo requests" in IBM AIX
Example: no -o udp_pmtu_discover=0; no -o tcp_pmtu_discover=0
[show me the details]
coolcommand: how to change the ownership of a database in Sybase
Example: sp_changedbowner new_owner
[show me the details]
coolcommand: how to assign a disk to an lpar in the IBM VIO Server
Example: mkvdev -vdev hdisk5 -vadapter vhost3 -dev lpar3hdisk0
[show me the details] - the search engine for UNIX sysadmins :: unix commands and scripts




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