unix command to list zero byte file and delete files

to count the words, lines and characters of file # wc install.log to find the location of file or directory # find / -iname to view the bottom lines of a file # tail # tail -3

to view the top lines of a file # head # head -5

to view the contents of a file screen-wise # less to see the calendar # cal | less or # cal | more r Recursive (Directory along with contents) to remove or delete a file or directory # rm to remove or delete an empty directory # rmdir to move a file or directory to a different location # mv r Recursive (to copy the directory along with its contents) to view the commands history # history to view the manual page of a command # man to change to the users home directory # cd to change directory two levels back # cd. to change directory one level back # cd. to create multiple directories # mkdir to create file using by Vi editor # vi to change the time stamp of a file or directory # touch to create multiple zero byte files # touch To combine the data of two or more files into a third file # cat > to append or add to an existing file # cat > Users can create files in linux by using these commands: a All files and directories including hidden It is the default mount point for removable storage media such as cdrom/dvd and pendrives etc. It generally contains the third party software. It contains information about all hardware devices. It contains variable information, such as lags and print queues. It contains the programs and applications which are available for users (smililar to program files in Windows) /var It contains essential commands which are used by all users.

It contains essential system commands which can only be used by the superuser (root). it also contains the files related for booting the OS such as the boot loader. It contains the kernel, which is the core of the operating system. When any user logs in the current working directory by default is the user’s home directory. It contains the home directory of all users (similar to ‘documents and settings’ folder in Windows). In Linux Unix the administrator is called as Root. All other directories are placed under it. It is at the top of the file system structure. This directory is called as the ‘root’ directory.

Unix command to list zero byte file and delete files