Basic Linux commands

Basic Linux Commands

mkdir - make directories

Ex:

mkdir folder1

cd - change directories

mv- change the name of a directory

Ex:
mv oldfolder newfolderr

pwd - print working directory

will show you the full path to the directory you are currently in.

rmdir -Remove an existing directory

Ex:

rm -rf folder1

Force to remove directories and files within the directories recursively.

chown - change file owner and group

Ex:

chown owner:group file

chown -R owner :group folder

R -recursive operate on files and directories recursively

chmod - change file access permissions

Usage

chmod 644 filenames

chmod -R 755 folder

R -recursive operate on files and directories recursively

4 = r (Read)

2 = w (Write)

1 = x (Execute)

CHMOD can also to attributed by using Numeric Permissions:

400 read by owner

040 read by group

004 read by anybody (other)

200 write by owner

020 write by group

002 write by anybody

100 execute by owner

010 execute by group

001 execute by anybody

ls - Short listing of directory contents

-a list hidden files

-dlist the name of the current directory

-F show directories with a trailing '/'

-R list all subdirectories encountered

-t sort by time modified instead of name

cp - Copy files and folders

Ex:

cp exsistingfile newfile

Copy the files "exsistingfile" to the file "newfile" in the current working directory.

cp -i exsistingfile newfile

With the "-i" option, if the file "newfile" exists, you will be prompted before it is overwritten.

cp -avf onefolder anotherfolder

Options

a-All

v-Verbose

f-Force

find – find files and folders

Ex:

$ find . -name diag

./Downloads/diag