General TC > Programming & Scripting - Unofficial

in a script, could I have the main body folowed by its functions at the botom?

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Rich:
Hi mocore
You can source right from the command line.
A file containing some functions:

--- Code: ---tc@E310:~$ ls -l Sourcing
-rw-rw-r-- 1 tc staff 20 Mar  6 09:31 Sourcing
tc@E310:~$ cat Sourcing
xyzzy()
{
cal $1
}

Mem()
{
free "-mo"
}

Path()
{
echo $PATH
}
tc@E310:~$
--- End code ---
No shebang, not executable, no main, just 3 functions.

The commands work after we source the file:

--- Code: ---tc@E310:~$ xyzzy
sh: xyzzy: not found
tc@E310:~$ xyzzy apr
sh: xyzzy: not found
tc@E310:~$ Mem
sh: Mem: not found
tc@E310:~$ Path
sh: Path: not found
tc@E310:~$ . ./Sourcing
tc@E310:~$ xyzzy
     March 2023     
Su Mo Tu We Th Fr Sa
          1  2  3  4
 5  6  7  8  9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31   
                   
tc@E310:~$ xyzzy apr
     April 2023     
Su Mo Tu We Th Fr Sa
                   1
 2  3  4  5  6  7  8
 9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30                 
tc@E310:~$ Mem
             total       used       free     shared    buffers     cached
Mem:          3028       1477       1551          0         82        574
Swap:          999          0        999
tc@E310:~$ Path
/home/tc/.local/bin:/usr/local/sbin:/usr/local/bin:/apps/bin:/usr/sbin:/usr/bin:/sbin:/bin:/etc/sysconfig/tcedir/ondemand
tc@E310:~$
--- End code ---

mocore:
hi @rich
wrt title : in a script, could I have the main body folowed by its functions at the botom?

you can order functions in the script however you like

the  order the of the named  blocks in the script should not affect the script execution
unless a function is called before its defined
which will result in error

--- Code: ---$script: line $X: $funcname: not found

--- End code ---

as mentioned : https://forum.tinycorelinux.net/index.php/topic,26125.msg167737.html#msg167737

the example
adding an optional explicit case to call the main function then exit
and two return cases , one for no arguments and , one for all other args

allows changing script execution path making calling the main function optional
so other functions can be sourced into shell or other scripts

perhaps its considered better to have ?? (  that seams to be  the gist of your reply   )
lib-foo.sh
and
foo.sh

where foo.sh effectively encapsulates  main block
and lib-foo.sh holds the functions to import

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