how could I run a ruby script as a command in linux.
I have this script which access the lib but i have to run it as
teraData.rb
i want to run it as teradata (or some meaningful command ) with args on linux from any command promt.
Where should i place the script and what should I do?
I am kinda new to linux so please help
If the script is executable and the first line of the script is #!/usr/bin/ruby (or whatever the path to your ruby interpreter might be), then you should be able to launch the script directly (i.e. $ ./myscript.rb).
Otherwise, execute the interpreter and pass it the script as an argument (ruby ./myscript.rb).
If you want to run the script from anywhere using a simple command, wrap one of these methods in a bash function like so:
function teraData {
ruby /path/to/script/teraData.rb $*
}
Place this function definition in your .bashrc file to have it automatically loaded whenever you open a shell.
.rb suffix on the file isn't necessary, and if the script is placed into a directory on the PATH, there's no need for the shell function.
teraData <your arguments> from any directory../teraData.rb you should be able to create a symlink to the script and name it whatever you want (place the symlink in your PATH instead of the script).put this as the first line of the script:
#!/usr/bin/env ruby
write a shell script that invokes the ruby script. Make sure both are executable.
#!/usr/bin/ruby.As you're new to linux, I recommend:
$ cd /path/to/file
$ ruby ./teraData.rb
Once you gain confidence, it's also possible to just enter the filename in the shell prompt. To do this, you need to:
teraData.rb to #! /usr/bin/env ruby (this will find the correct executable for you, other first lines are possible)chmod +x teraData.rb