SpaceFM Dialog Disk Info

[Anonymous]

I have been playing with SpaceFM's Dialog capabilities and have been very impressed with the way it works compared to Yad and Zenity. I'm surprised there are not more examples floating around. The easily implemented ability to watch a file and display changes makes completeing many tasks very straightforward.

#!/bin/bash
# version: 2016-02-11 00:29
# author: James Jordan     james   @  LiXCE.com
#-------------------------------------------------------------------------------

# Define the tempFile-----------------------------------------------------------
# need to make a unique temp file and I like to be able to identify them
# $$ inserts PID of script process
export tmpFile=/tmp/$USER-$$-df-LiXCE

# Create a function to process disk information---------------------------------
diskInfo ( ) { 
    # write the DF output to the temp file
    # Only uncomment ONE of the following lines
    # df -H > $tmpFile # Include all filesytems in Human readabel  1000's
    df -H -x devtmpfs -x tmpfs > $tmpFile # Do not include tmp file systems

    # Strip off the header row, have to make my own to include spacefm control chars
    sed -i '1d' $tmpFile

    # declare an array and pre-load it with my column headings
    declare -a eachWD=("^Filesystem" "^Size" "^Used" "^Avail" "^Percent Full:progress"  "^Mounted")
    # add column widths to the array
    eachWD=("${eachWD[@]}" "--colwidth=230" "--colwidth=50" "--colwidth=50" "--colwidth=50" "--colwidth=250" "--colwidth=150")
    # Load each word of the text file into the array.
    for word in $(<$tmpFile)
    do
        eachWD=("${eachWD[@]}" "$word")
    done
    # everything has been read so we can reuse the temp file
    echo -n "" > $tmpFile
    # get length of array
    numWDs=${#eachWD[@]}
    # iterate through a compund loop to create the proper order
    COUNTA=0
    # we have 6 columns so the outerloop needs to iterate 6 times
    while [ $COUNTA -lt  6 ]; do 
        COUNTB=0
        # the inner loop iterates one time for each line in the file
        # plus once for the header and once for the column widths
        while [ $COUNTB -lt  $numWDs ]; do  
            echo ${eachWD[$COUNTA + $COUNTB]} >> $tmpFile
            # increment the count by 6
            let COUNTB+=6
        done    
        let COUNTA+=1
    done
    return 0
}
export -f diskInfo

# Create an autoUpdate function that runs every 11 minutes----------------------
# 11 minutes keeps it from happening the same time every hour
autoUpdate () {
    sleep 660
    diskInfo
    autoUpdate
    return 0
}
# called from this shell level so do not need to export


# PROCESSING BEGINS HERE--------------------------------------------------------
# call the diskInfo function to provide initial display
diskInfo 

# Check the command line to see if we should automatically update
if [ "$1" == "-a" ]; then
    #call the autoUpdate function and continue processing
    autoUpdate &
fi  

# Present the Spacefm dialog which is really very simple 
eval "$(spacefm -g \
--window-size "800x200" --title LiXCE-Disk-Info  \
--list --font "Roboto Bold 12"  @/$tmpFile \
--button _Update bash -c diskInfo \
--button close  2>/dev/null)" 
# the 2>/dev/null supresses the gtk warnings

# Clean up
rm $tmpFile

# Turn out the lights
exit 0

[IgnorantGuru]

Thanks for the example. SpaceFM Dialog could use a How To as the manual is more of a reference (but does contain small examples). Also note that some plugins demonstrate Dialog use.

Also, I just added an Example Application plugin which demonstrates using a main loop to control a dialog.