In this tutorial, we will cover the whoami command that is available on Linux systems. The whoami command is short for “Who am I” and will print the effective username of the user that invoked the command. It is a fundamental command and will come in handy if you need to know the...
Before we jump into theexportcommand, let’s chat about environment variables. These are the secret sauce in the Linux recipe, helping the system know where to find files, how to behave, and more. You’ve probably encountered some famous ones likePATH(which tells Linux where to look for ex...
within one of those terminals quickly, you are probably looking for acommand-line calculator. In this category,GNUbc(short for "basic calculator") is a hard to beat one. While there are many command-line calculators available on Linux, I think GNUbcis hands-down the most powerful and ...
set -e command1 command2 If command1 returns a non-zero status, the script will finish and won't proceed to command2. However, there is also an interesting point to mention, described in 4.3.1 The Set Builtin: -e Exit immediately if a pipeline (see Pipelines), which may consist o...
With -c (command) it returns to the first shell instead of let open a new one. It is very similar to: sudo su -l -c 'echo "run a command and return"' Example: #sudo su -l knoppix -c 'echo "run a command as ${USER} and return"' run a command as knoppix and return # ...
https://unix.stackexchange.com/questions/257571/why-does-bashrc-check-whether-the-current-shell-is-interactive SCP fails without error https://unix.stackexchange.com/questions/18231/scp-fails-without-error/18647#18647 scp breaks when there's an echo command in /etc/bashrc ...
As a user, if there is an alias that you use regularly, then instead of defining it every time you open the terminal, you can save it in the .bashrc file. For example, we can replace the whoami command with the following line of code. ...
In Linux, what is the difference between "buffers" and "cache" reported by the free command? 132 Why does sudo command take long to execute? 207 Meaning of the buffers/cache line in the output of free 259 When does `cron.daily` run? 178 What does Virtual memory size in top mean?
It is ahidden filels command To view hidden files, you can run the below command: $ls-a Copy You can see the.bashrccommand in the first column. The contents of.bashrccan be changed to define functions, command aliases, and customize the bash. ...
So What is STDERR and STDOUT in Linux? Default Behaviour of any command in Linux Modify the command to redirect the error STDERR to a file How to Redirect the Output and Error to different files. Bash echo to STDERR - echo to the standard error or stderr ...