Check These Out
Not so useful. Just a cool feature.
E.g. Useful for hiding spoilers in reviews, etc.
Command makes use of the Malware Hash Registry (http://www.team-cymru.org/Services/MHR/).
It parses the current directory and subdirectories and calculates the md5 hash of the files, then prints the name and sends the hash to the MHR for a lookup in their database.
The 3rd value in the result is the detection percentage across a mix of AV packages.
Lists out all classes used in all *.html files in the currect directory. usefull for checking if you have left out any style definitions, or accidentally given a different name than you intended. ( I have an ugly habit of accidentally substituting camelCase instead of using under_scores: i would name soemthing counterBox instead of counter_box)
WARNING: assumes you give classnames in between double quotes, and that you apply only one class per element.
Necessary for fsck for example.
The remount functionality follows the standard way how the mount command works with options from fstab. It means the mount command doesn't read fstab (or mtab) only when a device and dir are fully specified. After this call all old mount options are replaced and arbitrary stuff from fstab is ignored, except the loop= option which is internally generated and maintained by the mount command.
It does not change device or mount point.
$ wget -qO - "http://www.google.com/dictionary/json?callback=dict_api.callbacks.id100&q=steering+wheel&sl=en&tl=en&restrict=pr,de&client=te"
this does the actual google dictionary query, returns a JSON string encapsulated in some fancy tag
$ sed 's/dict_api\.callbacks.id100.//'
here we remove the tag beginning
$ sed 's/,200,null)//'
and here the tag end
There are also some special characters which could cause problems with some JSON parsers, so if you get some errors, this is probably the case (sed is your friend).
I laso like to trim the "webDefinitions" part, because it (sometimes) contains misleading information.
$ sed 's/\,\"webDefinitions.*//'
(but remember to append a "}" at the end, because the JSON string will be invalid)
The output also contains links to mp3 files with pronounciation.
As of now, this is only usable in the English language. If you choose other than English, you will only get webDefinitions (which are crap).
Search for files and list the 20 largest.
$ find . -type f
gives us a list of file, recursively, starting from here (.)
$ -print0 | xargs -0 du -h
separate the names of files with NULL characters, so we're not confused by spaces
then xargs run the du command to find their size (in human-readable form -- 64M not 64123456)
$ | sort -hr
use sort to arrange the list in size order. sort -h knows that 1M is bigger than 9K
$ | head -20
finally only select the top twenty out of the list
Easiest way to check which modules are loaded in apache.
