Unix / Linux: Remove Passphrase from SSL Private Key
Objective: Remove passphrase from a SSL private key.
Tag Archives: linux
Unix / Linux: Redirect of stderr Not Working
Explains stderr redirection pitfalls and common errors. For redirections to work, order is important and they are evaluated from left to right.
Unix / Linux: Create Binary File from Hex Dump
Objective: Create or convert a text hex dump input file to a binary file on Unix / Linux.
Unix / Linux: Display Running Clock in Terminal
Objective: On a Unix or Linux, display a running clock on the top right hand corner of a shell terminal.
Unix / Linux: Create File of Certain Size
Objective: Create a new file on Unix / Linux which is of certain size.
Unix / Linux: Grep on One Column
Objective: Perform grep on one single column and if there’s a match, print the whole line.
Unix / Linux: Use Netcat to Check If Port Is Open
Objective: Use netcat (often abbreviated to nc) to check if a remote TCP or UDP port is open.
Shell Script: Check Leap Year
Objective: Use a shell script to read a year and check whether it is a leap year or not.
Unix / Linux: Change File Owner from One User to Another
Objective: Change ownership of all files belonging to a given user, within a targeted directory, to another specified user on Unix / Linux.
Linux: Assign Process to CPU Core
Objective: On SMP (Symmetric Multiprocessing) systems, override the Linux kernel’s process scheduling and bind a certain process to a specific CPU or core.
