Converts all the png files in a directory to a bunch of gifs - changing only the file extension. Converts them in parallel - simply change the '4' to match the number of CPUs you have, or the number you want to dedicate to the conversion process.

Uses soxi instead of mplayer

a quick function for searching changed files. just copy it in the bash Show Sample Output

Prints the path/filename and sparseness of any sparse files (files that use less actual space than their total size because the filesystem treats large blocks of 00 bytes efficiently). Uses a Tasker-esque field separator of more than one character to ensure uniqueness. Show Sample Output

It tries to identify the file types in a directory and adds or replaces them with their appropriate extensions. Please, update the "file" tool before use it (last version: 5.37): https://github.com/file/file

New objects cannot be assigned by reference. The result of the new statement can no longer be assigned to a variable by reference. Check the "Sample Output" example ("sample.php"). The Output of the above example in PHP 5: "Deprecated: Assigning the return value of new by reference is deprecated in sample.php on line 3". Output of the above example in PHP 7: "Parse error: syntax error, unexpected 'new' (T_NEW) in sample.php on line 3. Show Sample Output

Recursively compares files in directories DIR and OLD_FILES using dwdiff Word-by-word comparison with dwdiff results in words unique to NEW file versions in the DIR directory tree shown enclosed in [- SQUARE BRACKETS -] and words unique to OLD file versions in the OLD_FILES directory tree shown enclosed in {+ CURLY BRACES +} Note: does not detect files unique to the OLD_FILES directory tree. Show Sample Output

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." Show Sample Output

needs no GNU tools, as far as I see it

Make sure that find does not touch anything other than regular files, and handles non-standard characters in filenames while passing to xargs.

Have wc work on each file then add up the total with awk; get a 43% speed increase on RHEL over using "-exec cat|wc -l" and a 67% increase on my Ubuntu laptop (this is with 10MB of data in 767 files).

Use find to recursively make a list of all files from the current directory and downwards. The files have to have an extension of the ones listed. Then for every file found, grep it for 'searchString', returns the filename if searchString is found. Show Sample Output

This assumes there is only one result. Either tail your search for one result or add | head -n 1 before the closing bracket. You can also use locate instead of find, if you have locate installed and updated

The thunderbird message datastores get corrupt some times causing random failures, compaction to fail and general suck in thunderbird. Removing them causes thunderbird to rebuild the indexes and makes things quick again.

This will list all symlinks that are directories under the current directory. This will help you distinguish them from regular files.