Commands using cut (586)

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Check if x86 Solaris based system is 32bit or 64bit
This is likely only valid on Solaris based systems. Unfortunately a lot of the more universal techniques for determining if a system is 32bit or 64bit on x86 solaris fail to give much more information than "i86pc"

Ping all hosts on 192.168.1.0/24
Will report back IP address's of all hosts that are UP.

Find the package that installed a command

Convert Shell Text to Upper/Lower Case

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Remount root in read-write mode.
Saved my day, when my harddrive got stuck in read-only mode.

resolving basic authentication problem(401) with wget
I have a server with a php requiring basic authentication, like this:

Get your external IP address ( 10 characters long )
Shortest url to a external IP-service, 10 characters.

Mark packages installed with build-dep for autoremove (on Debian/Ubuntu)
Replace PACKAGE with desired package name. Found here: http://mikebeach.org/2011/04/undo-apt-get-build-dep/

Determine status of a RAID write-intent bitmap
Report information about a bitmap file.


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