.bashrc(short forbashreadcommand) is a configuration file for the Bash shell environment. Every time an interactive Bash shell session starts, the.bashrcscript file executes. The file contains variouscomments, configurations, and functions to customize the shell experience and automate tasks. The.bash...
$ echo $SHELL The output shows that we are using the bash shell. Another way of finding shell is using the echo command: $ echo $0 Likewise, the shell can be found out by using the ps command, though the ps command is used to display the PIDs of all the running processes: $ ps ...
Quick Definition: Traceroute is a Linux command-line utility used to trace the path network packets take from the source to a destination host or IP address. Have you ever been stuck trying to troubleshoot or diagnose a bad network connection on a Linux system? Luckily, there is a highly ...
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...
echo "Hello $1" } greeting "Beebom" To invoke, use the following command: ./greeting.sh How to Return Value from Bash Functions Unlike other programming languages, in bash, you cannot return values from the function. You can only send the return status from the bash function to the caller...
echo "Its, Linux TLDR" status=$? [ $status -eq 0 ] && echo "command succeeded" || echo "command failed" If you run the above script, it will print “command succeeded” on an exit status code of “0” and “command failed” on a non-zero exit status code. ...
Configuring the I/O scheduler on Red Hat Enterprise Linux 8 and 9 In RHEL8 and newernew I/O schedulersare available. These aremq-deadline,none,kyber, andbfq. Note that thenoopscheduler is callednone. More info on thenoop/noneschedulers can be found in"How to use the Noop or None IO...
Docker requires a Linux kernel version of 3.10 or higher. You can check your kernel version by running the command: uname -r CPU: Docker typically works well with modern CPUs. However, virtualization extensions (e.g., Intel VT-x or AMD-V) need to be enabled in the BIOS/UEFI firmware ...
What signal 0 does in kill command? when I execute "kill -0 PID" and PID is the id of a thread, the command exit without errors. Raw [root@host ~]# ps -eo pid,comm|grep -c 10252 0 [root@host ~]# kill -0 10252;echo $? 0 [root@host ~]# cat /proc/18020/task/10252/stat...
It is ahidden fileand simplels 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. ...