Commands by funollet (4)

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Purge configuration files of removed packages on debian based systems
also search with aptitude search '~c'

do a full file listing of every file found with locate

Make directory including intermediate directories
This will create the intermediate directories that do not exist. I did not know about this for a long time.

identify NEEDED sonames in a path
This works in combination with http://www.commandlinefu.com/commands/view/10496/identify-exported-sonames-in-a-path as it reports the NEEDED entries present in the files within a given path. You can then compare it with the libraries that are exported to make sure that, when cross-building a firmware image, you're not bringing in dependencies from the build host. The short version of it as can be seen in the same output is $ scanelf -RBnq -F "+n#f" $1 | tr ',' '\n' | sort -u

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Anti Syn Ddos
Ddos syn attack

find an unused unprivileged TCP port
Some commands (such as netcat) have a port option but how can you know which ports are unused?

copy with progress bar - rsync
-r for recursive (if you want to copy entire directories) src for the source file (or wildcards) dst for the destination --progress to show a progress bar

Copy a directory recursively without data/files

Search big files with long lines
This is a handy way to circumvent the "Maximum line length of 2048 exceeded" grep error. Once you have run the above command (or put it in your .bashrc), files can be searched using: $ lgrep search-string /file/to/search


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