In this tutorial we're going to take a look at how to setup a colorful MOTD anytime you wish to ssh into your machines
First install the required dependencies:
[ 10.10.14.13/23 ] [ /dev/pts/22 ] [~]
→ sudo apt install imagemagick openjdk-17-jdk coreutils perl git
Then clone the Util-Say repository:
git clone https://github.com/maandree/util-say
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools]
→ git clone https://github.com/maandree/util-say
Cloning into 'util-say'...
remote: Enumerating objects: 2216, done.
remote: Total 2216 (delta 0), reused 0 (delta 0), pack-reused 2216
Receiving objects: 100% (2216/2216), 700.67 KiB | 1.67 MiB/s, done.
Resolving deltas: 100% (854/854), done.
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools]
→ cd util-say
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools/util-say]
→ make
#you need to type make in order to generate the util-say.jar file that the scripts are using.
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools/util-say]
→ ls -lash img2ponysay
4.0K -rwxr-xr-x 1 nothing nothing 582 May 28 16:20 img2ponysay
here the file we're looking for is called img2ponysay
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools/util-say]
→ cat img2ponysay
#!/usr/bin/env bash
magnified='1'
file='-'
dash=0
chroma=1
c=0
platform=xterm
for arg in "$@"; do
if [ $c = 1 ]; then
c=0
chroma="$arg"
elif [ $dash = 1 ]; then
file="$arg"
elif [ "$arg" = "--" ]; then
dash=1
elif [ "$arg" = "-2" ]; then
magnified=2
elif [ "$arg" = "-c" ]; then
c=1
elif [ "$arg" = "-p" ]; then
platform=linux
else
file="$arg"
fi
done
java -jar "$(dirname "$0")/util-say.jar" \
--import image --magnified $magnified --file "$file" --balloon n --export ponysay --balloon y --file - --chroma "$chroma" --platform $platform
Next we're going to use a relatively small image to convert to our motd:
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools/util-say]
→ ./img2ponysay -- ~/Pictures/smallzero.png > motd.txt
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools/util-say]
→ cat motd.txt
As you can see, a tiny image can make a very large motd, and you need to be careful of the size of the image you choose to put as your MOTD:
[ 10.10.14.13/23 ] [ /dev/pts/26 ] [~/Tools/util-say]
→ cp motd.txt /etc/motd
Until there is Nothing left.
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