[SOLVED] Bash Shell Script : nested select case not working

gdizzle · 04-26-2015, 05:35 AM

Hi I am trying to get, the "back)" option in the 2nd select statment to work.

It does not react.

To give you and idea.

links.hist.txt contains http links.

e.g: http://www.google.com

Code:

#!/bin/bash
 
options=(link back quit)
 
PS3="Please select an option: "
 
select opt in "${options[@]}"
do
   case "$opt" in
        link)
        echo "Please enter the web address you wish to view, e.g: <http://www.google.com>"
        read address
        echo "$address" >> "$HOME"/links.hist.txt
        links -dump "$address"
        ;;
        back)
        hist=( $(head -n10 "$HOME"/links.hist.txt) quit )
        select histlist in "${hist[@]}"
                do
                case "$histlist" in
                 [1-10])
                 links -dump
                  ;;
                 quit)
                 exit
                   ;;
                 esac
        done
 
        #printf '%s\n' "${hist[@]}"
        links -dump "$address"
        ;;
        quit)
        echo "Thanks for using $0"
        exit 0
        ;;      
   esac
done

This is the section that does not work, I am trying to figure out what to place on the line:

Code:

links -dump "$histlist"

This does not choose the output from the 1-10 elements selected to be used in the next command for the -dump argument....

Code:

back)
        hist=( $(head -n10 "$HOME"/links.hist.txt) quit )
        select histlist in "${hist[@]}"
                do
                case "$histlist" in
                 [1-10])
                 links -dump "$histlist"
                  ;;
                 quit)
                 exit

Thanks for your time.

NevemTeve · 04-26-2015, 07:20 AM

Code:

    back)
        hist_last10=( $(head -n10 "$HOME"/links.hist.txt) quit )
        select hist_sel in "${hist_last10[@]}"
        do
            if [ "$hist_sel" = quit ]; then exit; fi
            links -dump "$hist_sel"
        done
        ;;

pan64 · 04-26-2015, 07:22 AM

I would put set -xv at the beginning of the script and you will see what's happening.

michaelk · 04-26-2015, 07:27 AM

Change [1-10]) to be default i.e. *

Code:

hist=( $(head -n10 links.hist.txt) quit )
        select histlist in "${hist[@]}"
                do
                case "$histlist" in
                  quit)
                      exit
                   ;;
                 *)
                   links -dump "$hist_sel"
                 ;;
                 esac
        done

FYI the number selected is saved to the variable $REPLY

gdizzle · 04-26-2015, 07:16 PM

Thanks everyone who replied, I tired NevemTeve's solution and it worked fine.

Thanks NevemTeve for your help.