UNIX BASICS - Beginners guide for Unix commands
For more software testing articles visit: http://www.softwaretestinghelp.com Main features of unix : Multi user - More than one user can use the machine Multitasking - More than one program can be run at a time. Portability – This means the operating system can be easily converted to run on different browsers. Commands ls when invoked without any arguments, lists the files in the current working directory. A directory that is not the current working directory can be specified and ls will list the files there. The user also may specify any list of files and directories. In this case, all files and all contents of specified directories will be listed. Files whose names start with "." are not listed, unless the -a flag is specified or the files are specified explicitly. Without options, ls displays files in a bare format. This bare format however makes it difficult to establish the type, permissions, and size of the files. The most common options to reveal