automongobackup.sh: 368: [: yes: unexpected operator automongobackup.sh: 393: [: yes: unexpected operator

[joyo43]

Sorry but i tried to run this script and its giving this error
automongobackup.sh: 368: [: yes: unexpected operator
automongobackup.sh: 393: [: yes: unexpected operator

MongoDB version v2.6.10
ubuntu 16.04 LTS

[ducminhn]

I got the same issue. Anyone know how to fix this?