Commands by jonavon

Commands by jonavon (4)

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Parse m3u playlist file for total time

Parse an m3u file with seconds for each item and output the length of the entire playlist Show Sample Output
This is sample output - yours may be different.
```
03:13:37
```
0

awk -F":|," '{RS="#"; sec+=$2}END{h=(sec/3600);m=((sec/60) % 60);s=(s;printf("%02d:%02d:%02d\n", h, m, s)}' file.m3u

jonavon · 2020-05-16 18:55:32 38
Check if port is open on remote machine

Check if port is open, if you don't have ncat on your machine. Show Sample Output
This is sample output - yours may be different.
```
Port is open
```
6

echo > /dev/tcp/127.0.0.123/8085 && echo "Port is open"

jonavon · 2020-05-03 13:30:13 28

Graphical tree of sub-directories with files

The command finds every item within the directory and edits the output so that subdirectories are and files are output much like the tree command Show Sample Output

find . -print | sed -e 's;[^/]*/;|-- ;g;s;-- |; |;g'

jonavon · 2019-09-25 17:49:35 5

Telnet to Free Internet Chess Server
This is sample output - yours may be different.
-7

telnet fics.freechess.org 5000

jonavon · 2009-11-09 21:44:19 0

What's this?

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Send command to all terminals in a screen session

Ruby - nslookup against a list of IP`s or FQDN`s

This version uses host and no ruby.

create a progress bar...

A simple way yo do a progress bar like wget.

Concatenate video files to YouTube ready output

Takes two input video files and an external audio track and encodes them together to an MPEG-4 DivX output video file with the correct size ready for uploading.

Rename files in batch

Put the machine to sleep after the download(wget) is done

[Note: This command needs to be run as root]. If you are downloading something large at night, you can start wget as a normal user and issue the above command as root. When the download is done, the computer will automatically go to sleep. If at any time you feel the computer should not go to sleep automatically(like if you find the download still continuing in the morning), just create an empty file called nosleep in /tmp directory.

Print current runlevel

Prints current runlevel and system start time. On older systems it also shows the last init state. Pretty useful on remote systems, pretty useless on local ones :)

GZip all files in a directory separately

It gzip each file in a directory separately

Extract public key from private

This will extract the public key that is stored in the private key using openssl.

Sort a character string

Sorts a character string, using common shell commands.

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