How to convert pdf to image on Linux command line
I have many PDF files, and I need to convert them to a png file format, add a border to those images, and convert back all those images to pdf …
How to Create Simple Shell Scripts in Linux
Creating shell scripts is one of the most essential skills that Linux users should have at the tip of their fingers. Shell scripts play an enormous role in automating repetitive …
How to check TLS/SSL certificate expiration date from command-line
How do I check the TLS/SSL certificate expiration date from my Linux or Unix shell prompt? How can I find the TLS certificate expiry date from Linux or Unix shell …
How to write the output into the file in Linux
How do I write the output into the file in Linux bash shell? Can you explain I/O redirection for both bash and POSIX shell to write data to the file …
How to add days to date and get new date on Linux
I brought eggs from the market, and it says best before 20 days from the date of packing. Say my egg box was packed on 29/July/2020. How do I add …
Marcel – A More Modern Shell for Linux
Marcel is a new shell. It is similar to traditional shells in many ways, but it does a few things differently: Piping: All shells use pipes to send a text …
Direnv – Manage Project-Specific Environment Variables in Linux
direnv is a nifty open-source extension for your shell on a UNIX operating system such as Linux and macOS. It is compiled into a single static executable and supports shells …
How to find ulimit for user on Linux
How can I find the correct ulimit values for a user account or process on Linux systems?For proper operation, we must ensure that the correct ulimit values set after installing …
How to extract tar.xz files in Linux and unzip all files
How do I extract tar.xz files in Linux? Can you tell me command to unzip linux-5.6.13.tar.xz file? How can I uncompressing (or decompressing) all files in the current directory?The tar …
Nginx restore real IP address when behind a reverse proxy
My Nginx web server is behind a reverse proxy server. How do I restore the original and real IP address of my client/visitors when behind a reverse proxy server such …