Commands by music4human (0)

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list files recursively by size

ASCII webcam live stream video using mplayer
Mplayer starts a webcam capture using ASCII art. Only mplayer required

Extract a bash function
I often need to extract a function from a bash script and this command will do it.

Find the package that installed a command

Use Kernighan & Ritchie coding style in C program

Get all files of particular type (say, PDF) listed on some wegpage (say, example.com)
See man wget if you want linked files and not only those hosted on the website.

Append a pub key from pem file and save in remote server accessing with another key
Useful if you need to add another key and you using pem files (typical in AWS EC2 Instances). If you use it in EC2 instances, remember that password authentication is disabled, so you have to use the first key generated when you generated the instance

Extract tar.gz file with original permission
-x, --extract, --get extract files from an archive -p, --preserve-permissions, --same-permissions extract information about file permissions (default for superuser) -f, --file=ARCHIVE use archive file or device ARCHIVE -v, --verbose verbosely list files processed

Get a docker container's run command line
A good way to build a new container when you don't remember how you did it the first time

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" }

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