How To Use Etc Command In Linux

Now open the etc hosts file using your editor of choice as follows sudo vi etc hosts then add the lines below to the end of the file as shown in the screen shot below.

How to use etc command in linux. 192 168 56 1 ubuntu tecmint lan 192 168 56 10 centos tecmint lan. To add a user and grant full sudo privileges add the following line. One of the most common uses of cat is to display a file to the screen and also to create a file on the fly and allow basic editing straight at the terminal. Read wikipedia s summary for a full breakdown of what each directory is and how it is used. Alsa base conf which needs root permissions you can use the command sudo nano alsa base.

Many manuals most linux command line tools include a man page. Man ls man cp man rmdir and so on. This will open etc sudoers for editing. The vipw and vigr commands are used to safely edit the files etc passwd and etc group in linux systems. You just saw three ways to view users in linux.

For example if you want to edit a file like viz. There s even a man page for the man program itself which is accessed using man man of course. By default dig commands will query the name servers listed in etc resolv conf to perform a dns lookup for you. Remember that tabs and spaces are also treated as characters. Configure dns locally using etc hosts file in linux.

The c column option is used for cutting by character position. The following dig command sends the dns query to google s name server 8 8 8 8 by using the 8 8 8 8 option. Here we use output delimiter as n which indicates a new line. Sudo a widely used command in the linux command line sudo stands for superuser do. Use the visudo command to edit the configuration file.

If you don t know which directory you are working in use the command pwd print working directory. Grep root etc passwd cut d f1 6 7 output delimiter n root root bin bash operator root sbin nologin how to cut by c haracters. This is helpful when you are not the admin on a linux system and don t have sudo access. This is where vipw and vigr commands comes in rescue. You can change this default behavior by using the symbol followed by a hostname or ip address of the name server along.