Commands by alamati (5)

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Mount a VMware virtual disk (.vmdk) file on a Linux box
Assumes XP/2000/2003. For Server 2008+ try offset=105,906,176 You can find this number in the System Information utility under Partition Starting Offset. UEFI based boxes you want partition 2 since the first is just the boot files (and FAT). This works with (storage side) snapshots which is handy for single file restores on NFS mounted VMware systems

AWK Calculator

find an unused unprivileged TCP port
Some commands (such as netcat) have a port option but how can you know which ports are unused?

Perl oneliner to print access rights in octal format
This prints file access rights in octal - useful when "stat" is unavailable.

vmstat/iostat with timestamp
Also useful with iostat, or pretty much anything else you want timestamped.

list with full path
List the full path of some files. You can add ".*" on the end if you want to display hidden files.

Bash prompt with user name, host, history number, current dir and just a touch of color
I put that line in my .bash_profile (OS X) and .bashrc (Linux). Here is a summary of what the \char means: n=new line, u=user name, h=host, !=history number, w=current work directory The \[\e[32m\] sequence set the text to bright green and \[\e[0m\] returns to normal color. For more information on what you can set in your bash prompt, google 'bash prompt'

Install a basic FreeBSD system
Install a basic FreeBSD system on a distant server. I use this to install FreeBSD on servers that can only boot a Linux rescue system. This sytem loads on ram when booted, so it is possible to install freely. You can even install on ZFS root !

infile search and replace on N files (including backup of the files)
the addition of ".bk" to the regular "pie" idiom makes perl create a backup of every file with the extension ".bk", in case it b0rks something and you want it back

Get full directory path of a script regardless of where it is run from
Also resolves symlinks, showing the full path of the link target


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