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Top Forums UNIX for Beginners Questions & Answers Ksh: How to get name of script when in same script Post 303035420 by vgersh99 on Thursday 23rd of May 2019 01:11:31 PM
Old 05-23-2019
Don, I guess a better question is how to derive the script name when it's "sourced" WITHOUT hardwiring its name in the script itself.
I've been dealing with the fullpath to the script name using this paradigm in ksh:
Code:
#!/usr/bin/ksh
#set -x

thisFile="$(whence ${0})"
echo "this file->[${thisFile}]"

Obviously it doesn't work when the script is sourced.

I tried this for testing:
Code:
#!/usr/bin/ksh
set -x

echo "\$0 ->[${0}] \$# -> [${#}]"
#thisFile="$(whence ${0})"
if [[ "${0}" = -* ]]; then
   # cannot get this to work when sourced....
   thisFile="${1}"
else
   # bash-ism
   #thisFile="$(type -P ${0})"
   # ksh-ism
   thisFile="$(whence ${0})"
fi

echo "this file->[${thisFile}]"

 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
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