Install Shellutils by running the following commands: ./configure --prefix=/usr && make && make install && mv /usr/bin/{basename,date,echo,false,hostname} /bin && mv /usr/bin/{pwd,sleep,stty,su,test,true,uname} /bin && mv /usr/bin/chroot /usr/sbin There is a command installed in this package which is named test. It is often used in shell scripts to evaluate conditions, but is more often encountered in the form of [ condition ]. These brackets are built into the bash interpreter, but the FHS dictates that there should be a [ binary. Create it by running: ln -sf test /bin/[