June 20, 2023
Double checked locking pattern was used in sigleton initialization in multi-threaded environments prior to C++11. C++11 removes the need for manual locking. It guarantees concurrent execution […]
June 13, 2023
The Tower of Hanoi is a classic problem in computer science that involves moving a stack of disks of different sizes from one peg to another […]
March 21, 2023
Signed integers can be used for positive, negative and zero, on the other hand, unsigned integers represents only non-negative numbers.A signed int uses the most significant […]
March 7, 2023
Commands in a shell script are executed from top to bottom. If some commandsfail, the execution continues to the next command. For example: Failing commands do […]
February 14, 2023
In some situations, saving stdout and stderr of your terminal command output can be crucial, To automatically save stdout and stderr, there are several options you can go with `>` : Write stdout […]
February 7, 2023
The shell variable HISTCONTROL controls what goes into the command history of bash shell. If HISTCONTROL variable equals to “ignorespace”, that means commands starting with a […]
January 31, 2023
While working in command terminal, we may want to re-enter a command we entered before. We can repeatedly press the up key on our keyboard until […]
January 10, 2023
Two types of variables exists in a Linux shell: Following command defines a shell variable: To convert a shell variable to environment variable following command can […]
