linux basic commands
There are so many commands available in linux used for various tasks.
but do we have to memorize all these commands? no . If you are a begginer man man command will be helful for you when you are working with linux . If you dont know wheat is done by particular command you can always get help from man command. for example if you want to know what is ls command you can type man ls. this command will display the what is ls command means and what are the options we can use with it.
But with the time you will master most of these commands. here are some basic commands you need to know in linux:
cd — go inside a directory
pwd — current location
cd — comeback from current directory
cat — open a file
ls — list down
ls -l — list down with permissions
ls -al — all directories ad files with permissions
mkdir — create a new directory
mv — test1.txt student
move test1.txt file into student directory
rmdir — remove directory
***if directory has files first we have to delete files inside the directory.
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rm — delete file
how to change permissions of a file
in linux r,w,x means read , write and executable permissions respectively.
these r,w,x has their own value.
0 — no permissions
1- execute
2- write
4- read
all permissions (rwx) → 1+2+4 =7
chmod 7 4 6 test1.txt
- initial permissions → -rwxr — rw-
- chmod 7 5 0 text1.txt
- after changing → -rwxr-x- — -
what if we want to give permission only to group?think that our current file hasnt given executable permission to group .so we can give permission like this ;
chmod g+x test.txt
there are several text editors available in linux such as nano,vim,gedit,mousepad
