Open a Terminal inside the SDK directory. You can either change the directory in your current terminal (<i>cd ~/Desktop/RUTX_R_GPL/openwrt-gpl-ipq40xx.Linux-x86_64</i>) or open the directory, right click any white space and click <i>Open in Terminal</i>: | Open a Terminal inside the SDK directory. You can either change the directory in your current terminal (<i>cd ~/Desktop/RUTX_R_GPL/openwrt-gpl-ipq40xx.Linux-x86_64</i>) or open the directory, right click any white space and click <i>Open in Terminal</i>: |