Bash shell script to check a given number is positive or negative
codeaft.sh
#!/bin/bash

echo "———————————————————————————————————————————"
echo "Script to check a given number is +ve or -ve "
echo "———————————————————————————————————————————"
echo "Enter the number \c"; read a
b=0
if [ $a -gt $b ];then
    echo "Entered number is positive"
elif [ $a -eq $b ];then
    echo "Entered number is zero"
else
    echo "Entered number is negative"
fi
echo "———————————————————————————————————————————"
Output
codeaft@codeaft:~$ bash codeaft.sh
———————————————————————————————————————————
Script to check a given number is +ve or -ve 
———————————————————————————————————————————
Enter the number -50
Entered number is negative
———————————————————————————————————————————

codeaft@codeaft:~$ sh codeaft.sh
———————————————————————————————————————————
Script to check a given number is +ve or -ve 
———————————————————————————————————————————
Enter the number 0
Entered number is zero
———————————————————————————————————————————
codeaft@codeaft:~$
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