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Unix Redirection and Pipe Operation

Unix Operating System use 3 standard streams, Standard Input through which input is sent to command's, Standard Output to which output of the executed command is sent and Standard Error to which the errors encountered during the command execution is sent to. This post...

Linux chmod Command Clearly Explained

In the Linux environment not all the users have permission to modify files and have access to directories. There are a set of user access permissions based on which category the user belong (user, group or other users). A superuser is the one who...