What are the general Commands in using Unix OS for a
beginner? how many commands you know in that?
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Answer Posted / appu
cat command:used to create and displaying the information
present in the files.
Syntax for file creation: cat>(filename)
Syntax for displaying information in those file: cat
(filename)
Syntax for Appending data in that files: cat>>(filename)
ls command: to list the files present in the system.
ls :will list all the files present in that directory.
ls -l:for long listing of the files.
ls -a:to view hidden files.
ls -ld:to get the permission for the current directory.
ls -ltr:to get the latest file in the directory.
man command:to know more information about the cmds.
Syntax:man <cmd>
eg:man ls
touch: is also used to create the multiple empty files at a
time.
Syntax:touch f{1..10}:creates 10 empty files with names
f1,...f10.
pwd:is used to know present working directory.
cd f1 :to changed to the directory f1.
mkdir <direcoty name>:to create new directory.
rmdir <directory name>:to remove directory when it is empty
only.
rm <filename>:to remove the files.
rm -r <direcotry name>:to remove the files in that
directory recursively.
rm -f <directoryname>:to remove the files in that directory
forcebily.
cp <source> <destination>: to copy the contents of one file
to another
cp -rR <s> <d>:will copy the contents of one directory to
another.
mv <s> <d>:will move the contents of one file to another.
ls -l|grep ^d:toget the list of directories.
ls -i|grep ^_:to get the list of files.
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