Installing and running .sh file in linux mint - linux

Question

I'm using Linux mint and I want to install COMSOL. The problem is that, when I run below code in terminal, there is an error which doesn't make sense. Could anyone solve the problem?
The code I wrote:
./COMSOL_Server_Workaround.sh
the error is:
COMSOL Server Installer Work-around Script
2016 TeAM SolidSQUAD-SSQ
./COMSOL_Server_Workaround.sh: 14: [: Linux: unexpected operator
./COMSOL_Server_Workaround.sh: 15: [: Linux: unexpected operator
-e ERROR: This script should be executed
from the COMSOL Server installation directory
(where comsolsetup.log resides)
picture of files
COMSOL_Server_Workaround.sh contains:
#!/bin/sh
echo
echo COMSOL Server Installer Work-around Script
echo 2016 TeAM SolidSQUAD-SSQ
echo
# assume working dir is COMSOL installation root
COMSOLROOT="$PWD"
# check architecture
[ "`uname`" == "Linux" ] && COMSOL_TARS="fl fl_setup_glnxa64 fl_setup_maclnx fl_jvm_glnxa64 fl_glnxa64 mph_maclnx mph_glnxa64"
[ "`uname`" == "Darwin" ] && COMSOL_TARS="fl fl_setup_maclnx fl_maclnx fl_jvm_maci64 fl_maci64 mph_maclnx mph_maci64"
# tell user he has to run the script from COMSOL Server folder
[ ! -e "$COMSOLROOT/comsolsetup.log" ] && echo -e "ERROR: This script should be executed\n from the COMSOL Server installation directory\n (where comsolsetup.log resides)" && exit 1
# check if we can write to folder
[ ! -w "$COMSOLROOT/comsolsetup.log" ] && echo -e "ERROR: Cannot write to folder \"$COMSOLROOT\".\n If COMSOL Server was installed as root, run this script as root too\n otherwise run it as user which made the installation of COMSOL Server!" && exit 2
# let us extract the source location and check if it accessible
COMSOLDVD="`grep "^cs.installroot" "$COMSOLROOT/comsolsetup.log" | awk '{print $3}'`"
echo "COMSOL SERVER Installation Path = $COMSOLROOT"
echo "COMSOL Server Installation Source Path = $COMSOLDVD"
# check if source is accessible
[ ! -r "$COMSOLDVD/setupconfig.ini" ] && echo "The installaton source \"$COMSOLDVD\" id not accessible! Make sure the DVD is mounted" && exit 3
# now start untaring FL archives
for COMSOL_TAR in $COMSOL_TARS
do
tar -xf "$COMSOLDVD/archives/$COMSOL_TAR.isa" -C "$COMSOLROOT"
done
# Null the bin\tomcat\conf\login.properties
echo > "$COMSOLROOT/bin/tomcat/conf/login.properties"
# Mission complete
echo
echo All done! Enjoy!
echo
exit 0