Commands using egrep (220)

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Disable the ping response
It really disables all ICMP responses not only the ping one. If you want to enable it you can use: $ sudo -s "echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all"

print line and execute it in BASH
If script.sh contains only these two lines: $ uname -a $ whoami

Download files linked in a RSS feed
The difference between the original version provided and this one is that this one works rather than outputting a wget error

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

Tracklist reaplace backspace to '-'
Requires perl 5.14 or greater

Download entire website for offline viewing
?mirror : turn on options suitable for mirroring. -p : download all files that are necessary to properly display a given HTML page. ?convert-links : after the download, convert the links in document for local viewing. -P ./LOCAL-DIR : save all the files and directories to the specified directory.

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

List all execs in $PATH, usefull for grepping the resulting list
While it seems (to me at least) a little counter-intuitive to filter on name first, this requires less work for find, as it allows it to immediately discount any files that do not match the name directly from the directory listing on disk. Querying against file attributes requires reading the file attributes, which is performed for all files matching any name based predicates.

Graphical tree of sub-directories with files
The command finds every item within the directory and edits the output so that subdirectories are and files are output much like the tree command

Exclude multiple columns using AWK
Print all columns except the 1st and 3rd.


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