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[: =: unary operator expected error

 
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# 1  
Old 12-04-2010
[: =: unary operator expected error
Why am I getting this error.... [: =: unary operator expected error
Thanks in advance.
giving me an error on the bolded lines

Code:
#!/bin/sh
# iOS-Ad-Remover
# Marshall Ford @ marshallbford@gmail.com
# This project is hosted @ http://ios-ad-
# remover.sourceforge.net
# Under the GNU GPL open source license


clear
echo
if [ `id -u` != 0 ]; then echo "You need to be root to run this script."; exit 0; # required by reboot command
echo
fi
set -xv
if [ -f "/var/mobile/iOS_Ad_Remover-`date +%d%m%y`.log" ]; then
rm iOS_Ad_Remover-`date +%d%m%y`.log
fi

logname=iOS_Ad_Remover-`date +%d%m%y`.log
echo "iOS-Ad-Remover Log File" >> $logname
datetime=`date +%c_%p`
echo "$datetime" >> $logname
deviceinfo="Device: "`deviceinfo -p`
echo "$deviceinfo" >> $logname

if [ -f "/var/lib/dpkg/info/com.ericasadun.utilities.list" ]; then # Erica Utilities check
:
else
echo "Erica Utilities not installed" >> $logname
echo "Error: You need to install Erica Utilities from Cydia"
sleep 5
exit
fi

if [ -d "/Applications/iFile.app" ]; then # iFile check
:
else
echo "Error: iFile not installed" >> $logname
echo "You need to install iFile from Cydia"
sleep 5
exit
fi

echo "Erica Utilities and iFile installed" >> $logname

if [ -f "/var/mobile/adremover.sh" ]; then
:
else
echo "This script is not called adremover.sh or is not located at /var/mobile/adremover.sh"
echo "Error: Script name or location not correct" >> $logname
fi
date # Start intro
echo
echo "Welcome to iOS-Ad-Remover Beta 1.0
"
sleep 3
echo "This script is similar to Adblock in that it will remove ads from most apps, some websites, and in Cydia.
"
sleep 5
echo "Click RETURN when you want to continue
"
read
echo "You will need to meet the following requirements...
"
read
echo "1. iFile and Erica Utilities installed and updated
"
read
echo "2. This script must be located @ /var/mobile
"
read
echo "3. This script will perform a reboot, you must have an untethered jailbreak or have access to a computer to power back on.
"
sleep 3
echo # end intro

echo "Have you completed the requirements and still want to continue?
"
echo "y/n?
"
read answer
if [ $answer = "y" ]; then
clear
# download host file
echo "Do you have the latest host file downloaded and located in /var/mobile/Media/Downloads?
"
echo "y/n?
"
read hosta
if [ $hosta = "y" ]; then
:
if [ -f "/var/mobile/Media/Downloads/fhosts" ]; then
:
else
echo "The host file does not exist"
echo "Error: The host file did not exist" >> $logname
sleep 3
openURL http://sourceforge.net/projects/ios-ad-remover/files/iOS-Ad-Remover/
exit
fi
fi
if [ $hosta = "n" ]; then
echo "User sent to download host file" >> $logname
openURL http://sourceforge.net/projects/ios-ad-remover/files/iOS-Ad-Remover/
exit
fi

echo # backup process
sleep 1
echo
echo "Backing-up"
sleep 3 
cd ..
cd ..
cd var/mobile/Media/Downloads
if [ -d "/var/mobile/Media/Downloads/Backup" ]; then
:
else
mkdir Backup
fi

cd ..
cd ..
cd ..
cd ..
cd etc
cp fhosts /var/mobile/Media/Downloads/Backup
cd /var/mobile/Media/Downloads/Backup
cp fhosts $datetime-backup-fhosts # rename process
rm fhosts # rename process
echo
echo "Done"
echo
echo "Old host file backed-up" >> $logname # backup done
sleep 1
echo "Changing the host file..."
sleep 3
cd ..
cd ..
cd ..
cd ..
cd ..
cd etc
rm fhosts
cd ..
cd /var/mobile/Media/Downloads
cp fhosts /etc
cd ..
cd /var/mobile/Media/Downloads
rm fhosts
echo
echo "You have successfully removed the majority of ads on iOS.
"
echo "You have successfully removed the majority of ads on iOS" >> $logname
sleep 3
echo "If you find an app that does not function"
echo "because of the ad-removal please contact me at marshallbford@gmail.com"
read
echo "Reboot performed" >> $logname
reboot # needed to insure host file install
fi

if [ $answer = "n" ]; then

clear
echo "iOS-Ad-Remover was stopped by the user" >> $logname
echo "iOS-Ad-Remover was stopped by the user."
sleep 3
echo
echo "Good Bye"
sleep 3
fi

Last edited by mbf123; 12-11-2010 at 07:58 PM..
# 2  
Old 12-04-2010
Try to quote all occurrences of the following variable de-references:

Code:
 [ $answer = "y" ]

should be:

Code:
[ "$answer" = "y" ]

and:

Code:
[ $hosta = "y" ]

should be:

Code:
[ "$hosta" = "y" ]

Last edited by radoulov; 12-05-2010 at 05:14 AM..
# 3  
Old 12-05-2010
Does not work, it just ignores the if then statements when i add the quotes.
# 4  
Old 12-05-2010
Try by changing all occurences to
Code:
[[ $answer = "y" ]]

instead of

Code:
 
[ $answer = "y" ]

# 5  
Old 12-05-2010
Nope this does not work, everything was working fine until I came across this error, basically the script ends at the line
Code:
echo "Have you completed the requirements
and still want to continue?"
echo
echo "y/n?"

It just stops.
I am running this on my iphone? Would that make a difference?
Thanks for all the feedback.
# 6  
Old 12-06-2010
Ignoring the iPhone factor and viewing this just as a Shell problem.

You have places where an "echo" has become two lines when it should be one line.

Code:
echo "You will need to meet
the following requirements..."

echo "2. This script must be located
@ /var/mobile"

echo "Have you completed the requirements
and still want to continue?"


Each of the three examples above needs the linefeed removed from the end of the first line.

Check carefully against the original code in case you have more paste errors.
# 7  
Old 12-06-2010
thanks for the pointer but I would like to fix the bug before I focus on non code breaking things.
 
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