Awk in Yad file replace existing value

valtam · 05-19-2021, 02:46 PM

My current bash script is:

Code:

#!/bin/bash

# Variables
fileloc="/home/jerry/scripts/widget"

# Backup file first
cp $fileloc $fileloc.backup

widedit=`(yad --title="Linux Lite - Widget Editor" --borders=20 --text="All fileds <span font='Roboto Bold 12'>MUST</span> have a value:\n" --form \
--field="Gap X (0 - total monitor width span in pixels): ":NUM '!0..100000!1' \
--field="Gap Y (0 - total monitor height span in pixels): ":NUM '!0..100000!1' \
--field="Transparent (yes or no ):":CB yes!no! \
--button=gtk-apply:0)`

# Write to configuration file

echo $widedit | awk '{ sub(/gap_x/,"gap_x "$1); print }' >> $fileloc
echo $widedit | awk '{ sub(/gap_x/,"gap_x "$2); print }' >> $fileloc
echo $widedit | awk '{ sub(/gap_x/,"gap_x "$3); print }' >> $fileloc

exit 0

I'm wanting to have the line in /home/jerry/scripts/widget that shows gap_x 65 to read the value I input into the yad box, then overwrite the existing value in the widget file. At this point I am stuck. Thank you in advance.

shruggy · 05-19-2021, 03:20 PM

1) What is the point of invoking yad in a subshell? Did you confuse old and new syntax for command substitution [backticks vs. $(...)]?

2) In Bash, I would quote 'yes!no!'.

3) yad will print values separated by vertical bars like 30|50|yes|, so you have to specify | as delimiter for awk. Alternatively, you could specify --separator=' ' as an option to yad.

4) The output of yad doesn't include the string gap_x, so trying to substitute it is pointless.

5) Moreover, I don't understand why you're doing it thrice.

Code:

echo '30|50|yes|' |
  awk -F\| -vf="$fileloc" '{print"gap_x",$1>f}'

If what you want are all parameters, then

Code:

echo '30|50|yes|' |
  awk -F\| -vf="$fileloc" '
  {
    print "gap_x",       $1 >f
    print "gap_y",       $2 >f
    print "transparent", $3 >f
  }'

valtam · 05-19-2021, 03:59 PM

There were some wording errors in my first post, now corrected. Thank you for your reply.
This is the conky widget file:

Code:

# Conky Widget


# Gap between borders of screen and text
# Same thing as passing -x at command line
gap_x 65
gap_y 25

# Use Xft?
use_xft yes

# Xft font when Xft is enabled
#xftfont Bitstream Vera Sans Mono:size=8
#xftfont Terminus:size=10

# Text alpha when using Xft
xftalpha 0.8

# Update interval in seconds
update_interval 1.0

# This is the number of times Conky will update before quitting.
# Set to zero to run forever.
total_run_times 0

# Create own window instead of using desktop (required in nautilus)
own_window yes
#own_window_colour grey
own_window_argb_visual yes
own_window_transparent yes
own_window_argb_value 0
own_window_type normal
own_window_class conky-semi
own_window_hints undecorated,below,sticky,skip_taskbar,skip_pager

# Use a background image
background yes

# Use double buffering (reduces flicker, may not work for everyone)
double_buffer yes

# Minimum size of text area
minimum_size 300 200

# Maximum width of widget
maximum_width 310

# Draw shades?
draw_shades yes

# Draw outlines?
draw_outline no

# Draw borders around text
draw_borders no
draw_graph_borders yes

# Stippled borders?
#stippled_borders 8

# border margins
#border_margin 4

# border width
#border_width 1

# Default colors and also border colors
default_color white
color2 9fee62 # System is up to date
color3 ff4343 # Red - Number of Updates Available

default_shade_color black
default_outline_color white

# Text alignment, other possible values are commented
alignment bottom_right

# Subtract file system buffers from used memory?
no_buffers yes

# Set to yes if you want all text to be in uppercase
uppercase no

# Number of cpu samples to average
# set to 1 to disable averaging
cpu_avg_samples 2

# Number of net samples to average
# Set to 1 to disable averaging
#net_avg_samples 2

# Force UTF8? note that UTF8 support required XFT
override_utf8_locale yes

# Width and thickness of ${hr 2} bar separator
default_bar_size 150 5

# Lua rounded corners requirements
lua_load /etc/conky-lite/draw_bg.lua
lua_draw_hook_pre draw_bg 
imlib_cache_size 0

# Distance of text from edge of widget
border_outer_margin 10

own_window_colour 000000
TEXT
${image /etc/conky-lite/logo.png -p 110,100}
###INFO###
${alignc}${font Noto Sans:bold:size=16}${color ffe082}${exec cat /etc/llver}${font}
${color}
${alignc}${color}${time %A, }${time %e %B %Y}
${color}
${color slate grey}${hr 2}

###SYSTEM###
${alignc}${font Noto Sans:bold:size=13}${color ffe082}System Information${font}
${color}
${color}CPU Usage:	${alignr}$cpu%
${color}Memory Total:	${color}${alignr}${memmax}
${color}Memory Used:	${color}${alignr}${mem}
${color}Logged in as:	${alignr}${color}$USER
${color}Firewall Status:	${alignr}${execpi 5 /etc/conky-lite/fwchk}
${color}
${color}${alignc}${exec /usr/bin/acpi | awk '{print $1,$3,$4,$5}'}
${color}
${color slate grey}${hr 2}


###UPDATES###
${alignc}${font Noto Sans:bold:size=13}${color ffe082}Update Status${font}
${color}
${alignc}${execpi 300 /etc/conky-lite/updates}

I want to overwrite the values below that are in the conky widget file, to whatever I input into the yad boxes, and leave the rest of the file intact.

Code:

gap_x 65
gap_y 25
own_window_transparent yes

Yes, I'm no bash guru, that is why I am here, for help and guidance. Cheers.

shruggy · 05-19-2021, 04:19 PM

Code:

#!/bin/sh
fileloc="/home/jerry/scripts/widget"
<<! IFS='|' read gapx gapy xpar
$(yad ...)
!
sed -Ei '/^gap_x\>/s/\S+$/'"$gapx"'/
         /^gap_y\>/s/\S+$/'"$gapy"'/
         /^own_window_transparent\>/s/\S+$/'"$xpar/" "$fileloc"

In Bash, you could also use HERE string instead of HERE document, or redirect from process substitution.

valtam · 05-19-2021, 09:35 PM

Thank you shruggy, that worked well, plus I learned a lot. Many thanks