Following on from the PHP script to print happy birthday I wanted do the same in a bash script. I don't really use bash for much more than stringing together commands so I had to figure out how to do loops and if statements using the simple bash syntax. I also wanted to pass the name of the person as an argument, rather than hard code it into the script. This is what I came up with.
#!/bin/bash
output=''
for i in {1..4}
do
output=$output"Happy birthday "
if [ $i -eq 3 ]
then
output=$output"dear $1\n"
else
output=$output"to you\n"
fi
done
echo -e $output
Save the file as happy.sh or similar and run it in the following way (Name is the argument that we pass to the script).
$ ./happy.sh NameComments
Nice.
Add some ANSI sequences to make it more festive.
\e[31m sets text to red\e[43m sets background to yellow\e[1m sets bold text (on some older terminals it might set bright colors)\e[0m resets all to original settings
They can be strung together with semicolons as \e[31;43;1mIt's even better if you add spaces to the beginning of "Happy birthday " and after "to you \n" (before the newline) to pad each line to the name length. Find the length of the passed name with "${#1}" which returns the number of characters in the passed string, then pad with spaces with printf "%${n}s"#! /bin/sh
n=${#1}
pad=$(printf "%${n}s")
str=''
for i in {1..4}
do
str=$str" \e[31;43;1m Happy birthday "
if [ $i -eq 3 ]
then
str=$str"Dear $1 \e[0m\n"
else
str=$str"to you ${pad}\e[0m\n"
fi
done
echo -e "\n$str"
I made an even better (imo) bash script, which has music. And the music is not from an external file, but written entirely in bash.
Good effort Job. Excellent work! :)
