Commands using traceroute (1)

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dump database from postgresql to a file

Get Unique Hostnames from Apache Config Files
Get a list of all the unique hostnames from the apache configuration files. Handy to see what sites are running on a server. A slightly shorter version.

Write and read HDD external
Write and read HDD external FreeBSD

Cropping a video file in ffmpeg

Files extension change
Changing a file extension to a new one for all files in a directory.

Exclude inserting a table from a sql import
Starting with a large MySQL dump file (*.sql) remove any lines that have inserts for the specified table. Sometimes one or two tables are very large and uneeded, eg. log tables. To exclude multiple tables you can get fancy with sed, or just run the command again on subsequently generated files.

Recursive cat - concatenate files (filtered by extension) across multiple subdirectories into one file
Useful if you have to put together multiple files into one and they are scattered across subdirectories. For example: You need to combine all .sql files into one .sql file that would be sent to DBAs as a batch script. You do get a warning if you create a file by the same extension as the ones your searching for. find . -type f -name *.sql -exec cat {} > BatchFile.txt \;

list files recursively by size

Unrar all multipart rar archives in directory

Prefix command output with duration for each line
Prefixes each output line with time between it and the previous one.


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