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 16
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 15

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 0

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

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Count the total number of files in each immediate subdirectory

counts the total (recursive) number of files in the immediate (depth 1) subdirectories as well as the current one and displays them sorted. Fixed, as per ashawley's comment

Use wget to download one page and all it's requisites for offline viewing

google chart api

List dot-files and dirs, but not . or ..

Get the serial numbers from HP RAID

This dumps serial numbers of all the drives but HP warranty check does not say they are valid ...

Instant mirror from your laptop + webcam

Search for files in rpm repositorys. (Mandriva linux)

Look for an rpm that supplies a specific file that you don't yet have installed. extremely useful when you need something and don't know where it is.. or what its called. note: uses grep like syntax.

Create multiple subfolders in one command.

Instead of typing separate commands to create various subfolders, we can create multiple subfolders by listing them between brackets and separated by commas.

Poor man's ntpdate

If you don't have netcat, you can use curl.

Uptime in minute

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