Useful tips for everyday
What does sudo chmod 777 do? Setting 777 permissions to a file or directory means that it will be readable, writable and executable by all…
How do I open ports in my Google Cloud instance? Go to the Firewall page in the Google Cloud Console. Click Create firewall rule. Enter…
What is proc PID EXE? /proc//exe is a reference to an open file description inside the kernel. There’s no way to convey an open file…
Why is my ZIP file not unzipping? Incomplete Downloads Zip files may refuse to open if they are not properly downloaded. Also, incomplete downloads occur…
How do I increase memory limit in R? Use memory. limit() . You can increase the default using this command, memory. limit(size=2500) , where the…
How do I record Internet traffic? To capture network traffic, you can use tcpdump. This is a packet sniffer that can observe and record network…
Which command will print the length of the Logest line using WO command? Display Length of Longest Line The ‘wc’ command allow an argument ‘-L’,…
How do I enable Systemctl on CentOS? Enabling a service on boot in CentOS 7 Very similar to disabling a service, you run systemctl enable…
How do you initialize an array of elements to zero? If your array is declared as static or is global, all the elements in the…
How do I mount Google Drive from terminal? Mounting your Google Drive From the terminal, issue the command mkdir ~/google-drive to create a new folder…