CODEWITHSUNDEEP
linuxbashshelldialog
Ivan
Ivan

Reputation: 4234

bash scripting: how to get item name on a radiolist using dialog

I need to make a radiolist in bash script using dialog interface, for example if I have the following list:

dialog --backtitle "OS information" \
--radiolist "Select OS:" 10 40 3 \
 1 "Linux 7.2" off \
 2 "Solaris 9" on \
 3 "HPUX 11i" off

I need when the user chooses an option and presses "ok", my script could read the item's name and not the item's number.

It is possible?

Thanks!

Upvotes: 9

Views: 8125

Answers (3)

ANDuser
ANDuser

Reputation: 121

man dialog

 --stdout
              Direct output to the standard output.  This option is provided
              for compatibility with Xdialog, however using it in portable
              scripts is not recommended, since curses normally writes its
              screen updates to the standard output.  If you use this option,
              dialog attempts to reopen the terminal so it can write to the
              display.  Depending on the platform and your environment, that
              may fail.

therefore:

array=(Linux Solaris HPUX)

opt=$( dialog --stdout \
 --backtitle "OS infomration" \
 --radiolist "Select OS:" 10 40 3 \
 1 "Linux 7.2" off \
 2 "Solaris 9" on \
 3 "HPUX 11i" off )

printf '\n\nYou chose: %s\n' "${array[var - 1]}"

Upvotes: 0

ANDuser
ANDuser

Reputation: 121

in Termux app >/dev/tty 2>&1 is not working, but 3>&1 1>&2 2>&3 3>&- is working perfectly.

which means: 3>&1 opens a new file descriptor which points to stdout, 1>&2 redirects stdout to stderr, 2>&3 points stderr to stdout and 3>&- deletes the files descriptor 3 after the command has been executed.

taken from:BASH: Dialog input in a variable


sooo.... 
array=(Linux Solaris HPUX)
var=$(dialog --backtitle "OS infomration" \
 --radiolist "Select OS:" 10 40 3 \
 1 "Linux 7.2" off \
 2 "Solaris 9" on \
 3 "HPUX 11i" off 3>&1 1>&2 2>&3 3>&- )
printf '\n\nYou chose: %s\n' "${array[$var - 1]}"

Upvotes: 0

jordanm
jordanm

Reputation: 34934

You can put your expected results in an array:

array=(Linux Solaris HPUX)
var=$(dialog --backtitle "OS infomration" \
--radiolist "Select OS:" 10 40 3 \
 1 "Linux 7.2" off \
 2 "Solaris 9" on \
 3 "HPUX 11i" off >/dev/tty 2>&1 )

printf '\n\nYou chose: %s\n' "${array[var - 1]}"

Upvotes: 4

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