We often need to run programs repeatedly with different command line arguments.
For example, we may want to run program3.go repeatedly as follows:
./program3 2 3
./program3 3 3
./program3 4 3
./program3 2 4
./program3 3 4
. . .
In bash this is done using a shell script (created using an ordinary text editor.)
The following script is called script1.sh:
#!/bin/bash
go build program3.go
for (( j=3 ; j <= 5 ; j++ ))
do
for (( i=2 ; i <= 4 ; i++ ))
do
./program3 $i $j
done
done
The first line of the script:#!/bin/bashtells your system to use the bash shell to execute the commands that follow.
Be sure to make the script executable with the commandchmod u+x script1.sh
The script is executed thus:./script1.sh