Useful tips for everyday
How do you replace a new line character with space in Unix? Fast answer :a create a label ‘a’ N append the next line to…
Why is my copy and paste not working on iPhone? If you’re using a third-party web browser, install any available updates for it: Update apps…
What is Tcpkeepalive in SSH? The KEEPALIVE option of the TCP/IP Protocol ensures that connections are kept alive even while they are idle. When a…
How do you substitute text? The Excel SUBSTITUTE function replaces text in a given string by matching. For example =SUBSTITUTE(“952-455-7865″,”-“,””) returns “9524557865”; the dash is…
How do I install graphics card drivers in Linux Mint? To add the PPA do the following: 1) Open a terminal via Ctrl + Alt…
How do I troubleshoot IPsec tunnels? In general, begin troubleshooting an IPsec VPN connection failure as follows: Ping the remote network or client to verify…
What is tilde in awk? In addition to normal arithmetic and logical operators, AWK expressions include the tilde operator, ~ , which matches a regular…
How do I encrypt a Postfix email? Postfix is one of a popular Mail Transfer Agent(MTA) for routing and delivering emails. The best way to…
What is signal mask of a process? The collection of signals that are currently blocked is called the signal mask. Each process has its own…
How do you write if else in bash? The if statement starts with the if keyword followed by the conditional expression and the then keyword.…