Error while installing Oracle 11g in Ubuntu 18.04 Also getting a runfixup.sh script which is also giving error




root@szh-server:/tmp/CVU_11.2.0.1.0_zuman# ./runfixup.sh 
Response file being used is :./fixup.response
Enable file being used is :./fixup.enable
Log file location: ./orarun.log
./orarun.sh: 186: [: true: unexpected operator
./orarun.sh: 848: [: unexpected operator
./orarun.sh: 864: [: unexpected operator
./orarun.sh: 882: [: unexpected operator
./orarun.sh: 903: [: true: unexpected operator
./orarun.sh: 1052: [: unexpected operator
./orarun.sh: 1057: [: unexpected operator
./orarun.sh: 1075: [: unexpected operator
./orarun.sh: 1085: [: unexpected operator
./orarun.sh: 1115: [: unexpected operator
./orarun.sh: 1143: [: unexpected operator
./orarun.sh: 1189: [: unexpected operator
./orarun.sh: 139: [: unexpected operator
./orarun.sh: 139: [: unexpected operator
./orarun.sh: 1228: [: unexpected operator
./orarun.sh: 1284: [: unexpected operator
./orarun.sh: 1342: [: unexpected operator
./orarun.sh: 1426: [: unexpected operator
./orarun.sh: 1451: [: unexpected operator


I'm getting the error from the script which is supposed to fix the installation errors. -_-

Any solution for this?
Looking at the Oracle provided fixup scripts, I got the answer. The main script is orarun.sh which runs on bash.
So the following command does the trick!
PS: Remember, you need to be login as root.

bash ./orarun.sh fixup.response fixup.enable .