How can I run a function from a script in command line?

Question

I have a script that has some functions.

Can I run one of the function directly from command line?

Something like this?

myScript.sh func() 

Answer 1

Well, while the other answers are right - you can certainly do something else: if you have access to the bash script, you can modify it, and simply place at the end the special parameter "$@" - which will expand to the arguments of the command line you specify, and since it's "alone" the shell will try to call them verbatim; and here you could specify the function name as the first argument. Example:

$ cat test.sh testA() {   echo "TEST A $1"; }  testB() {   echo "TEST B $2"; }  "$@"   $ bash test.sh $ bash test.sh testA TEST A  $ bash test.sh testA arg1 arg2 TEST A arg1 $ bash test.sh testB arg1 arg2 TEST B arg2 

For polish, you can first verify that the command exists and is a function:

# Check if the function exists (bash specific) if declare -f "$1" > /dev/null then   # call arguments verbatim   "$@" else   # Show a helpful error   echo "'$1' is not a known function name" >&2   exit 1 fi 

Answer 2

If the script only defines the functions and does nothing else, you can first execute the script within the context of the current shell using the source or . command and then simply call the function. See help source for more information.