I'm trying to create an array of functions in order to iterate through each function in order.
declare -a FUNCTION
FUNCTION[1]="FUNCTION.A"
FUNCTION[2]="FUNCTION.B"
FUNCTION[3]="FUNCTION.C"
for i in "${!FUNCTION[@]}"; do
${FUNCTION[$i]};
done
This just prints out FUNCTION.A and says command not found. I need it to run the function. Suggestions?
Works fine for me.
declare -a FUNCTION
FUNCTION[1]="FUNCTION.A"
FUNCTION[2]="FUNCTION.B"
FUNCTION[3]="FUNCTION.C"
#Define one of the functions
FUNCTION.A() { echo "Inside of FUNCTION.A"; }
$ for i in "${!FUNCTION[@]}"; do ${FUNCTION[$i]}; done
OUTPUT:
Inside of FUNCTION.A
FUNCTION.B: command not found
FUNCTION.C: command not found
Another way that I think looks a lot better
funcs_to_test=( voltage_force_landing voltage_warn_critical )
for testP in "${funcs_to_test[@]}"
do
$testP
done
And make sure to have written your functions above where you call this code
It is possible to define functions from names kept in an array and then call these functions after their definition:
#!/bin/sh
declare -a functions=( a b c )
for f in ${functions[@]}; do
eval "$f() {
echo "Hello from $f"
# ...
}"
$f
done
Alternatively:
#!/bin/sh
declare -a functions=( a b c )
a() { echo "Hello from $FUNCNAME"; }
b() { echo "Hello from $FUNCNAME"; }
c() { echo "Hello from $FUNCNAME"; }
for f in ${functions[@]}; do
$f
done
I'm a moron........ The function must apparently be above where its being called. Kinda annoying. I wish all the functions could reside at the bottom.
You can also declare the function like this
FUNCTION=(FUNCTION.A FUNCTION.B FUNCTION.C)
And then iterate through it like this:
for i in "${!FUNCTION[@]}"; do
${FUNCTION[i]}
This should work. If you just call "$i" it will only print the functions name from the array.
To avoid that little nuisance, just put the body of the script into yet another function. (I usually call it "app_main", because "main" is the name of the script's function as far as bash is concerned.)
#!/usr/bin/env bash # more portable
first() { echo "${FUNCNAME[0]}: $@" ; }
second() { echo "${FUNCNAME[0]}: $@" ; }
app_main() {
first "hello"
second "goodbye" 17 3.14159
}
app_main
