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get files without extensions, get ASCII and utf-8 as "text/plain"
Check which files are opened by Firefox then sort by largest size (in MB). You can see all files opened by just replacing grep to "/". Useful if you'd like to debug and check which extensions or files are taking too much memory resources in Firefox.
Best to put it in a file somewhere in your path. (I call the file spath)
IFS=:; find $PATH | grep $1
Usage: $ spath php
-exec works better and faster then using a pipe
As an alternative to using an additional grep -v grep you can use a simple regular expression in the search pattern (first letter is something out of the single letter list ;-)) to drop the grep command itself.
doesn't do case-insensitive filenames like iname but otherwise likely to be faster
This does the following:
1 - Search recursively for files whose names match REGEX_A
2 - From this list exclude files whose names match REGEX_B
3 - Open this as a group in textmate (in the sidebar)
And now you can use Command+Shift+F to use textmate own find and replace on this particular group of files.
For advanced regex in the first expression you can use -regextype posix-egrep like this:
mate - `find * -type f -regextype posix-egrep -regex 'REGEX_A' | grep -v -E 'REGEX_B'`
Warning: this is not ment to open files or folders with space os special characters in the filename. If anyone knows a solution to that, tell me so I can fix the line.
Returns nothing if the domain exists and 'No match for domain.com' otherwise.
Renames all the jpg files as their timestamps with ".jpg" extension.
Remove newlines from output.
One character shorter than awk /./ filename and doesn't use a superfluous cat.
To be fair though, I'm pretty sure fraktil was thinking being able to nuke newlines from any command is much more useful than just from one file.
Pipe any output to "grep ." and blank lines will not be printed.
Gets the internal and external IP addresses of all your interfaces, or the ones given as arguments
Will return your internal IP address.
The same as the other user, but smarter, using -d and -f
xargs -P N spawns up to N worker processes. -n 40 means each grep command gets up to 40 file names each on the command line.
This one will work a little better, the regular expressions it is not 100% accurate for XML parsing but it will suffice any XML valid document for sure.
Within /proc and /sys there are a lot of subdirectories, which carry pseudofiles with only one value as content. Instead of cat-ing all single files (which takes quite a time) or do a "cat *" (which makes it hard to find the filename/content relation), just grep recursively for . or use "grep . /blabla/*" (star instead of -r flag).
For better readability you might also want to pipe the output to "column -t -s : ".
The example command deletes all aliases for network interface 'em0' assuming that the aliases have netmask of 255.255.255.255 and the master IP has some other netmask (such as 255.255.255.0). See here -> http://my.galagzee.com/2009/07/22/deleting-all-network-interface-aliases/ for more on the rationale of this command.
Retrieve top ip threats from http://isc.sans.org/sources.html and add them into iptables output chain.
I wanted all the 'hidden' .flv files from the http link in the command line; wget seemed appropriate, fed with output from lynx, grep the flv files and the normalised via sed (to remove the numeric bullet). Similar to the 'Grab mp3 files' fu. Replace link with your own, grep arg with something more interesting ;) See here for something along the same lines...
Hope you find it useful! Improvements welcome, naturally.