Commands by ntropia

Commands by ntropia (5)

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hardcode dnsserver, no more rewriting of etc/resolv.conf

The while loop is an overkill, it would be simpler to prevent the file to be modified. That said, none of the proposed solutions are such: a real one would go to the source of the problem.
This is sample output - yours may be different.
-1

chkmod -w /etc/resolve.conf

ntropia · 2018-05-14 16:25:47 291
Selecting a random file/folder of a folder

The same thing using only Bash built-in's. For readability I've kept the variables out, but it could me made extremely more compact (and totally unreadable!) by stuffing everything inside the single echo command.
This is sample output - yours may be different.
-3

IFS=$'\n'; LIST=`ls -1`; let TOT=`echo $LIST | wc -w`-1 ; array=($LIST); echo "Selected ${array[ ($RANDOM % $TOT) ]}"

ntropia · 2011-03-13 21:30:44 4
Terrorist threat level text

This line provides the same result by reading the output of a less arbitrary value. This is a personal choice on the matter, and the result on different machines may vary.
This is sample output - yours may be different.
9

echo "Terrorist threat level: `od -An -N1 -i /dev/random`"

ntropia · 2011-01-28 03:16:21 9
find the device when you only know the mount point

Same output Show Sample Output
This is sample output - yours may be different.
```
A different way to obtain the same without having "to shoot" with the Awk cannon :)
```
-2

df | grep -w '/media/armadillo' | cut -d " " -f 1

ntropia · 2011-01-21 05:39:58 4
find the device when you only know the mount point

Identical output but a different way without having to shoot with the Awk cannon :)
This is sample output - yours may be different.
-2

df | grep -w '/media/mountpoint' | cut -d " " -f 1

ntropia · 2011-01-21 05:38:05 4

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Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

View a man page on a nice interface

A great way of viewing some man page while using gnome.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Make a directory named with the current date

Create a directory named with the current date in ISO 8601 format (yyyy-mm-dd). Useful for storing backups by date. The --iso switch may only work with GNU date, can use format string argument for other date versions.

Get the absolute path of a file

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

"What the hell is running on?!" Easily snoop your system's RAM consumption

Works on most unixes, on OpenBSD replace the "-g" parameter at the sort with a "-n".

find matching wholename example

list all opened ports on host

scheduled jobs

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