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Full Discussion: Ksh: How to get name of script when in same script
Top Forums UNIX for Beginners Questions & Answers Ksh: How to get name of script when in same script Post 303035392 by Don Cragun on Wednesday 22nd of May 2019 05:01:32 PM
Old 05-22-2019
Quote:
Originally Posted by Michael Fitz
To get the script name the variable $0 can normally be used.
Problem happens when the command is started with a "dot space" as in: . myscript.sh.
$0 shows -ksh not myscript.sh
From within the script ps -f does not show myscript.sh either.
Someone suggested using readlink but cannot get that to work

Here is a test script:
Code:
#myscript.sh
echo myscript=$0
mypid=$$
echo mypid=$mypid
ps -f
ls /proc/$mypid/exe
readlink /proc/$mypid/exe

Code:
uname -a
Linux svappd02 2.6.32-754.11.1.el6.x86_64 #1 SMP Tue Jan 22 17:25:23 EST 2019 x86_64 x86_64 x86_64 GNU/Linux

Thanks!
The . command asks the shell to include the text found in the file named by its operand in the body of the currently running script and execute in the current shell execution environment without starting another shell or sub-shell to process the commands found in that file.

If it is important for the file you are running with the . command to accurately specify the name of the file from which . read those commands, the script calling it will need to cooperate with it something like:
Updated calling calling myscript.sh:
Code:
... ... ...
dotscript="my script.sh"
. "$dotscript"
... ... ...

Updated code in myscript.sh:
Code:
#myscript.sh
mypid=$$
echo "The code in $dotscript is being run by $0 with PID $mypid"

 

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