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It will produce passwords with length of 20 printable characters within a reasonable time.
For shorter or longer passwords just change the 20 in bs=20 to something more convenient.
To create only alpha numeric passwords change [:print:] to [:alnum:]
tells you the number of lines in said file, and then tail the last 100 lines ( or how many are messed up) then u take the total amount of lines and then subract the 100 or so lines u DONT WANT, then do a head -n $new_number and then redirect it to new file.db
chkrootkit is a tool to locally check for signs of a rootkit,Get it from the website http://www.chkrootkit.org
Convert all Tables from MyISAM to InnoDB
The command line can be accessed by using the cmd command which will open a command window with a DOS interface. The command line is a throw back to the early days of computing before there was a Windows interface.
List of commands you use most often suppressing sudo
Test your XFS filesystem and Raptor hard drives for write performance.
change ":" in path for new line and associate word path to var $PATH
Batch resize all images to a width of 'X' pixels while maintaing the aspect ratio.
This makes uses of ImageMagick to make life easier.
Find and replace specific characters in a single line in multiple files with sed.
Some malicious program appends a iframe or script tag to you web pages on some server, use this command to clean them in batch.
You can replace "sort -nu" with "sort -u" for a word list sorted or "sort -R" for a random-sorted line
Here's a bash version using an array.
NOT MINE! Taken from hackzine.com blog.
It creates a tree-style output of all the (sub)folders and (sub)files from the current folder and down(deeper)
Quoting some of hackzine's words
"Murphy Mac sent us a link to a handy find/sed command that simulates the DOS tree command that you might be missing on your Mac or Linux box. [..split...] Like most things I've seen sed do, it does quite a bit in a single line of code and is completely impossible to read. Sure it's just a couple of substitutions, but like a jack in the box, it remains a surprise every time I run it."
This command allows you to find the effective uid and gid of the Apache process regardless of process name (which can be apache2 or httpd depending on distro).
1 rpm -ivh package.rpm
2 yum localinstall package.rpm
3 Edit /etc/yum.conf or repository.repo and change the value of gpgcheck from 1 to 0 (!dangerous)