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[: too many arguments

 
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Old 03-26-2019
[: too many arguments
line 5: [: too many arguments

Code:
#!/bin/bash
old=$(du -sh /home/andy/Downloads/myfile.iso)
while true; do
    new=$(du -sh /home/andy/Downloads/myfile.iso)
    if [ $old -eq $new  ] ; 
    then
        break
    fi
    old=$new
    xdotool getactivewindow key Ctrl
    sleep 5
done

line 5: [: too many arguments

I read about that error here, but could not figure the cause of my error.

bash - Meaning of "[: too many arguments" error from if [] (square brackets) - Stack Overflow
 
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LEARN ABOUT DEBIAN

mic-livecd-iso-to-disk

MIC-LIVECD-ISO-TO-DISK(1)				      General Commands Manual					 MIC-LIVECD-ISO-TO-DISK(1)

NAME

       mic-livecd-iso-to-disk - Convert a livecd image to a live USB image then write to a USB disk or partition

SYNOPSIS

       mic-livecd-iso-to-disk [--reset-mbr] [--noverify] [--overlay-size-mb <size>] [--home-size-mb <size>] [--unencrypted-home] <isopath>
       [usbstick device]

       <isopath> is your livecd image path name, [usbstick device] is optional, if not provided, it will detect automatically and ask you to
       select.

DESCRIPTION

       mic-livecd-iso-to-disk can convert a livecd image to a live USB image and write it to a USB disk or partition, it is different from mic-
       image-writer which is just a safer dd with progress bar.

       mic-livecd-iso-to-disk can detect all the removable USB disks and let you select one of them, if you didn't insert any USB disk, it will
       ask you to insert until a USB disk is available, it can decide if your USB disk need to be formated and if your USB disk has an appropriate
       partition for this livecd image, all the operations are interactive and have warnings f they will damage your old data on your USB disk.

       mic-image-manager has a GUI tool for it.

OPTIONS

       --reset-mbr     Set MBR on your USB disk

       --noverify      Don't verify your livecd image

       --overlay-size-mb      Specify overlay size, the default size is 64 MB

       --home-size-mb	      Specify home size, the default is 0

EXAMPLES

       Write a Molib live image to your USB disk:

       mic-livecd-iso-to-disk your-2.1-final.img

EXIT STATUS

       mic-livecd-iso-to-disk returns  a  zero	exist  status  if it succeeds, otherwise return non-zero and print error message.

AUTHOR

       Yi Yang, Anas Nashif, Jianfeng Ding

SEE ALSO

       mic-image-creator(1), mic-convertor(1), mic-chroot(1), mic-image-writer(1), mic-image-manager(1)

perl v5.12.3							    2011-05-31						 MIC-LIVECD-ISO-TO-DISK(1)