Short for “disk free”, df is a command used to display the free disk space in Linux and other similar operating systems. It is also used to understand and ascertain the file systems that are mounted. Now, you may have noticed that I mentioned that this command can be used to define ...
the OS provides simple tools, while shell scripting and command language combine to perform complex workflows. Linux supports a number of languages, including PHP, Perl, Ruby, Python and others. This diversity gives developers the freedom to write code in whatever language they feel most comfortable...
When a new file is created, it is assigned an inode number and a file name. An inode number is a unique number within that file system. Both name and inode number are stored as entries in a directory. When I ran thels command“ls -li /” the file name and inodes number are what ...
To "grep" the phone numbers, I am going to write my regex using meta-characters to isolate the relevant data and ignore what I don't need. The complete command is going to look like this: christopher@linux-handbook:~$ grep '\(([0-9]\{3\})\|[0-9]\{3\}\)[ -]\?[0-9]\{...
What is the-f Command in Linux? Usually, you can use the f command option in different commands to get different results. Tar Command Let’s use the tar command with and without the -f option: tar-xsample.tar.gz As you can see in the previous image, the terminal is showing an error...
wakes up (executes) to handle periodic service requests when required. The daemon runs when the system boots from /etc/init.d or /etc/rc.d/init.d scripts. Thus, it can be started or stopped -- or restarted -- using theinitscript or with a command service crond start in Linux systems...
It is ahidden fileand simplels commandwon’t show the file. 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. ...
Return to Question I just accidentally typedland hit enter. Then this happened. I'm I'mnot talking aboutls -ljustl. Why did this happen? Someone please explain???
Let’s write a cURL command to get post 1 from the API: curl https://jsonplaceholder.typicode.com/posts/1 The command returns the response body sent from the API in JSON format, which looks like this in the terminal: { "userId": 1, "id": 1, "title": "sunt aut facere repellat ...
Thesos reportcommand is a tool that collects configuration details, system information and diagnostic information from a Red Hat Enterprise Linux system. For instance: the running kernel version, loaded modules, and system and service configuration files. The command also runs external programs to coll...