It's an environment variable that stores the paths of commonly used executables. All OSes have this set, even on Windows.
Not exactly clean what do you mean.1. Which directory are you in: pwd2. Your PATH environment variable: echo $PATH
The PATH variable.
The PATH environment variable is the default search path(s) for when an explicit path is not provided and the file requested is not in the current directory.
If it's already in your PATH variable, then simply the name of the executable would do. If not, then use the full path of the executable or navigate to the directory of the executable and then ./executable where "executable" is the name of the executable.
root
Ubuntu is a Linux distribution (as in a specific OS setup with the Linux kernel.)
The path (or PATH) variable is a shell environment variable. It describes to the shell which directories should be searched for executable files/programs. The system does not search every directory to find a program; only those directories indicated in the PATH shell environment variable. The same thing is true for Windows.
pwd
PATH is a system variable used by the "shell" to determine where to find programs that are executable. This variable exists in similar forms on both Windows and Linux operating systems (and other related or similarly-designed systems). Removing this variable will not specifically stop the graphical user interface for the system from working correctly, but it will interfere with the execution of "shell scripts", users that attempt to use the command line interface (terminal) and programs that depend on the shell to execute child processes.
You change the current working path directory in Linux by issuing the cd command, followed by the directory you want to change to. For example:cd /dev/inputwould take me to the that directory.
The PATH statement contains the information necessary to SET the PATH ENVIRONMENT (caps and emphasis from DOS). Still available in XP, and I believe also Vista, as well as Linux and UNIX, it is used in these operating systems to point to executables and/or data. The path to an executable represented by an icon is readily available in the properties on the .lnk. The referenced website has very good info on the PATH Statement and the PATH ENVIRONMENT varibles. http://vlaurie.com/computers2/Articles/environment.htm "The path to a file is basically its address on the computer. It tells programs how to find a file. It is the drive plus any directories and sub-directories where the file is located. The %PATH% environment variable specifies the command search path."
The use of a Linux Virtual Machine is to run a copy of Linux on your current operation system. This will allow you to run various applications that only run on Linux.