Commands by jsiei97 (4)

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Quickly graph a list of numbers
Useful when you've produced a large file of numbers, and want to quickly see the distribution. The value of y halfway along the x axis is the median. Simple! Just create the listOfNumbers.txt file with a number on each line to try it out.

Get a Bulleted List of SVN Commits By a User for a Specifc Day (Daily Work Log)
* Replace USERNAME with the desired svn username * Replace the first YYYY-MM-DD with the date you want to get the log (this starts at the midnight event that starts this date) * Replace the second YYYY-MM-DD with the date after you want to get the log (this will end the log scan on midnight of the previous day) Example, if I want the log for December 10, 2010, I would put {2010-12-10}:{2010-12-11}

generate random password (works on Mac OS X)
Prepending env LC_CTYPE=C fixes a problem with bad bytes in /dev/urandom on Mac OS X

Multi line grep using sed and specifying open/close tags
Working with log files that contains variable length messages wrapped between open and close tags it may be useful to filter the messages upon a keyword. This works fine with GNU sed version 4.2 or higher, so pay attention to some unix distros (solaris, hp-ux, etc.). Linux should be ok.

Prepend a text to a file.
Using the sed -i (inline), you can replace the beginning of the first line of a file without redirecting the output to a temporary location.

Display unique values of a column
Find the unique values of a column utilizing awk. Credits goes to here (posted by "era"): http://www.unix.com/shell-programming-scripting/77138-awk-print-distinct-col-values.html

Summarize the number of open TCP connections by state
Useful for checking the number and state of TCP connections.

Another way to see the network interfaces
Like many other thing in Linux ,you can see the same thing in different way.

determine if tcp port is open

How to remove an ISO image from media database


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