Recent changes to Examples

Discussion for Examples page

wseverin — Thu, 07 Dec 2017 22:28:06 -0000

I've been a frequent user of zenity and just a few days ago decided to see what I could do with yad. Here is the fruit – a simple random password generator that lets the user pick symbol sets and some constraints. I'm sure there are better ways to do some of the things here, but it may be a helpful example for future yad users. This works with yad 0.38.2 on Ubuntu 17.10 (Artful).

#!/bin/bash

# put following code into temporary file and make executable
echo '#!/bin/bash

declare -a ARGS USEDSYM

UC="ABCDEFGHJKLMNPQRSTUVWXYZ" # excludes "I" and "O"
LC="abcdefghijkmnopqrstuvwxyz" # excludes "l"
NUM="0123456789"
HEX="ABCDEF"
SPEC="!@#$%-&."

function reqChar {
  local i i0 ix j
  FROMSET="$1"
  GOOD=FALSE
  i0=$(( $RANDOM * PWLEN / 32768 ))
  for ((ix=i0;ix<PWLEN+i0;ix++)); do
    i=$(( ix % PWLEN ))
    if [ "${FROMSET#*${PW:$i:1}}" != "$FROMSET" ]; then
      GOOD=TRUE
      USEDSYM[i]=1
      break
    fi
  done

  if [ $GOOD = FALSE ]; then
    i0=$(( $RANDOM * PWLEN / 32768 ))
    for (( ix=i0;ix<i0+PWLEN;ix++)) ; do
      i=$(( ix % PWLEN ))
      if [ -z ${USEDSYM[i]} ]; then
        j=$(( $RANDOM * ${#FROMSET} / 32768 )) # a random character to replace it with
        PW="${PW:0:$((i))}${FROMSET:j:1}${PW:$((i+1))}"
        USEDSYM[i]=1
        break
      fi
    done
  fi
}

# pwgen-exec main
# args: PWLEN USEUC USELC USENUM USEHEX USESPEC RQUC RQLC RQNUM RQSPEC

i=0
for arg in "$@"; do
  ARGS[i++]=$arg
done

# determine base symbol set
PWLEN=${ARGS[0]}
SYMSET=""
if [ "${ARGS[1]}" = "TRUE" ]; then SYMSET="${SYMSET}${UC}"; fi
if [ "${ARGS[2]}" = "TRUE" ]; then SYMSET="${SYMSET}${LC}"; fi
if [ "${ARGS[3]}" = "TRUE" ]; then SYMSET="${SYMSET}${NUM}"; fi
if [ "${ARGS[4]}" = "TRUE" ]; then SYMSET="${SYMSET}${HEX}"; fi
if [ "${ARGS[5]}" = "TRUE" ]; then SYMSET="${SYMSET}${SPEC}"; fi
SYMLEN=${#SYMSET}

PW=""
for ((i=0;i<PWLEN;i++)); do
  PW=${PW}${SYMSET:(( $RANDOM % SYMLEN )):1}
done

# comply with constraints
USEDSYM=( )
if [ "${ARGS[6]}" = "TRUE" ]; then reqChar "$UC"; fi
if [ "${ARGS[7]}" = "TRUE" ]; then reqChar "$LC"; fi
if [ "${ARGS[8]}" = "TRUE" ]; then reqChar "$NUM"; fi
if [ "${ARGS[9]}" = "TRUE" ]; then reqChar "$SPEC"; fi

if [ ${#PW} = 0 ]; then PW="nonsense"; fi
echo "16:${PW}"' > /tmp/pwgen-exec

chmod 777 /tmp/pwgen-exec

yad --title="PWGen" --center \
  --form \
    --field="password length:NUM" \
    --field="<b>select base character set(s)</b>:LBL" \
    --field="uppercase alpha:CHK" \
    --field="lowercase alpha:CHK" \
    --field="numeric:CHK" \
    --field="A-F:CHK" \
    --field="special:CHK" \
    --field=":LBL" \
    --field="<b>select constraint(s)</b>:LBL" \
    --field="at least one uppercase:CHK" \
    --field="at least one lowercase:CHK" \
    --field="at least one numeric:CHK" \
    --field="at least one special:CHK" \
    --field=":LBL" \
    --field="gtk-execute:FBTN" \
    --field=":TXT" \
    "8!4..132"  "" TRUE TRUE TRUE FALSE FALSE "" "" FALSE FALSE TRUE FALSE "" \
    '@bash -c "/tmp/pwgen-exec %1 %3 %4 %5 %6 %7 %10 %11 %12 %13"' \
    "password" \
    --button="Exit:1"

rm -f /tmp/pwgen-exec
exit 0

Discussion for Examples page

Brian Stewart — Mon, 04 Apr 2016 12:20:04 -0000

Thank you, thank you, thank you!!!
I knew this had to be something stupid on my part.
I had tried using variables, expressions brackets etc.
I'm new to bash and didn't know about the "--". I won't forget it now.

Discussion for Examples page

Victor Ananjevsky — Mon, 04 Apr 2016 09:31:17 -0000

don't use brackets. separate data from options with two dashes if you have data started with dash

yad --title="Negative number test" --form --field="number:NUM" -- "-2!-5..10!1!0"

Discussion for Examples page

Brian Stewart — Mon, 04 Apr 2016 08:51:26 -0000

I'm trying to use a numerical input field with a range of -5 to +10 and with an initial value of -2. I can get yad to set the range with the -5..10 range but I cannot get the initial value to be a negative number. It always seems to start with an initial value of 0.
What am I doing wrong?

yad --title="Negative number test"\ --form --field="number:NUM" "(-2)!-5..10!1!0"

Discussion for Examples page

Colin Keenan — Mon, 15 Sep 2014 15:33:55 -0000

I've read the man page and examples here and elsewhere, but really, there should be quick example usage for each option. Right now, I can't get --show-uri to work. Can anyone post a simple example of --show-uri in the --text-info dialogue? This doesn't work:

yad --info-text --show-uri --text="https://www.google.com/"

Discussion for Examples page

Anonymous — Sat, 08 Feb 2014 08:37:38 -0000

Originally posted by: ekia...@gmail.com

It would be great if yad could display icons/tiny pictures in "lists" - so that one can for example display a thumbnail in a column, and the name of the file in another. Would that be possible to implement ?

Discussion for Examples page

Anonymous — Sat, 08 Feb 2014 08:37:38 -0000

Originally posted by: yarling....@gmail.com

Hi. I created a start and stop button interface. So when I clicked on the start button, my program is executing but the interface is gone. How can I make the interface remain so that I can stop my program using the stop button in the interface? Thanks.

Discussion for Examples page

Anonymous — Sat, 08 Feb 2014 08:37:37 -0000

Originally posted by: macke...@gmail.com

Here is a process killer to select one (or more) pids and kill them:

!/bin/bash

TMPFILE=/tmp/$$.pstmp OUTFILE=/tmp/$$.psdata EMSG=/tmp/$$.errmsg

gen_data() {

ps aux | tail -n +2 > $TMPFILE

cat $TMPFILE | awk -F' ' '{print " " "\n" $1 "\n" $2 "\n" $3 "\n" $4 "\n" $5 "\n" $6 "\n" $7 "\n" $8 "\n" $9 "\n" $10 "\n" $11}' > $OUTFILE

}

while true do

gen_data

selection=$( yad --list \

--checklist \

--column=":CHK" \ --column="USER:TXT" \ --column="PID:NUM" \ --column="%CPU:NUM" \ --column="%MEM:NUM" \ --column="VSZ:NUM" \ --column="RSS:NUM" \ --column="TTY:TXT" \ --column="STAT:TXT" \ --column="START:TXT" \ --column="TIME:TXT" \ --column="COMMAND:TXT" \ --multiple \ --width=900 \ --height=600 \ --title="Killer" \ --window-icon="process-stop" \ --button="Kill:0" \ --button="Refresh:1" \ --button="Exit:2" < $OUTFILE)

sel_ret=$?

case $sel_ret in

0)

echo "$selection" | awk -F'|' '{print $3 " " $12}' | while read pid cmd do

if -n "$pid" then

zenity --question --text "Confirm kill of pid: $pid\n\nCommand: $cmd" rc=$? if $rc -eq 0 then

kill -9 $pid 2> $EMSG if $? -ne 0 then

errmsg="cat $EMSG" zenity --error --text "$errmsg"

else

zenity --info --text "Pid $pid killed..." --timeout=1

fi

fi

else

zenity --info --text "No pid selected..." --timeout=3

fi

done ;;

continue ;;

2)

break ;;

esac

done

rm -f $TMPFILE rm -f $OUTFILE rm -f $EMSG

Discussion for Examples page

Anonymous — Sat, 08 Feb 2014 08:37:37 -0000

Originally posted by: jbs...@gmail.com

Anyone can help me with this?

So basically this BASH script works fine, Debian boots into a minimal Matchbox WM environment and this script is autorun which displays a nice graphical prompt allowing entry of AD username and pass, and then the vars get passed to pyhoca-cli which logs the computer into a remote x2go-server linux terminal server.. it works without issue.

However what I want to do is add an additional drop-down selection to the YAD graphical prompt (after the first two fields), where the user can select the session (eg kde, xfce4, lxde & fluxbox), and then pass that selection to the pyhoca-cli command to replace startkde with something like start$frmdata (from the dropdown selection)...

Not sure exactly how to do this...

root@lxtrms-thinclient-colodesk:~# cat /home/colodesk/start_pyhoca.sh
 #!/bin/bash
while true; do
frmdata=$(yad --center --undecorated --image=/usr/share/wallpaper/header-mod.jpg --image-on-top --button="gtk-ok:0" --title "Login to Linux Terminal Server" --form --field="AD username" --field="Password:H")
frmusername=$(echo $frmdata | awk 'BEGIN {FS="|" } { print $1 }')
frmpassword=$(echo $frmdata | awk 'BEGIN {FS="|" } { print $2 }')
pyhoca-cli --server some.private.ip.addr -u $frmusername --password $frmpassword -c startkde --sound none --kbd-layout us --kbd-type pc105/us -g fullscreen --add-to-known-hosts
done

Discussion for Examples page

Anonymous — Sat, 08 Feb 2014 08:37:36 -0000

Originally posted by: ananasik

yes, now --rest is a better choice than perl && eval. and for adding command at the begin of history file, i use sed - sed -i "1 i $rcmd" $HISTFILE