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Full Discussion: Assigning basename result to another variable
Top Forums Shell Programming and Scripting Assigning basename result to another variable Post 303021620 by annacreek on Monday 13th of August 2018 12:38:16 PM
Old 08-13-2018
I will try to clarify one of my issues.
I need to get item selected from whiptail (menu) --checklist

Here is my last simplified code using "while read" and it sort off works retrieving values from menu.


Three issues

1. It will print continually - after "enter" and only first parameter passed to the function , not the (menu) selection and only when --separate-output is implemented

2. It will print selection in "" after "enter", then it will print first parameter passed to the function, continually after each enter press when --separate-output is NOT implemented.

3. It will never "terminate " the "while read "



I can live with "" around selection , but need to stop the "while read".
Any suggestion will be appreciated.
Cheers



BTW

I run plain bash on Raspian OS.

My code is under construction / troubleshooting and I do concentrate on issues
not on keeping the code in sync with comments. It should not be a big issue if discussion participants bypass the comment too if the are not relevant.





Code:
   	 	 	 	   czechlist_DEBUG  
 Passed parameter #1 is DEBUG USB  
 Passed parameter #2 is lsusb
 Passed parameter #3 is test parameter !  
 Passed parameter #4 is test parameter 2  
 
 
 DEBUG USB  
 
 
 DEBUG USB  
 
 
 
 
 
 
 czechlist_DEBUG(){
 echo "czechlist_DEBUG "
 echo "Passed parameter #1 is $1"
 echo "Passed parameter #2 is $2"
 echo "Passed parameter #3 is $3"
 echo "Passed parameter #4 is $4"
 #echo "--checklist <text> <height> <width> <listheight> [tag it$
 # Option 1"
 #pause  
  whiptail \
  --title "$1"  \
  --separate-output \
  --checklist  "Choose: " 20 78 15 \
  "$2" "" on  \
  "$3" "" off \
  "$4" "" off
  2>selection  
 #prints selection / results without separate-output option
 #  --separate-output \
 while read selection 
 do  
         echo "$1"
 done  
   p { margin-bottom: 0.1in; line-height: 115%; }p { margin-bottom: 0.1in; line-height: 115%; }

 

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LEARN ABOUT OPENSOLARIS

dirname

basename(1)							   User Commands						       basename(1)

NAME

       basename, dirname - deliver portions of path names

SYNOPSIS

       /usr/bin/basename string [suffix]

       /usr/xpg4/bin/basename string [suffix]

       dirname string

DESCRIPTION

       The  basename  utility deletes any prefix ending in / and the suffix (if present in string) from string, and prints the result on the stan-
       dard output. It is normally used inside substitution marks (``) within shell procedures.

   /usr/bin
       The suffix is a pattern defined on the expr(1) manual page.

   /usr/xpg4/bin
       The suffix is a string with no special significance attached to	any of the characters it contains.

       The dirname utility delivers all but the last level of the path name in string.

EXAMPLES

       Example 1 Setting environment variables

       The following example, invoked with the argument /home/sms/personal/mail sets the environment variable NAME to the file named mail and  the
       environment variable MYMAILPATH to the string  /home/sms/personal:

	 example% NAME=`basename $HOME/personal/mail`
	 example% MYMAILPATH=`dirname $HOME/personal/mail`

       Example 2 Compiling a file and moving the output

       This  shell  procedure,	invoked  with  the argument /usr/src/bin/cat.c, compiles the named file and moves the output to cat in the current
       directory:

	 example% cc $1
	 example% mv a.out `basename $1 .c`

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables that affect  the execution of basename and  dirname:  LANG,  LC_ALL,
       LC_CTYPE, LC_MESSAGES, and NLSPATH.

EXIT STATUS

       The following exit values are returned:

       0     Successful completion.

       >0    An error occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

   /usr/bin
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

   /usr/xpg4/bin
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWxcu4			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       expr(1), basename(3C), attributes(5), environ(5), standards(5)

SunOS 5.11							    18 Mar 1997 						       basename(1)
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