1.If you are executing a application in terminal then the terminal becomes free when you closed the opened application.. Howewer it is also possible to run more than one applications in the same terminal itself.. It is simply by Putting & at the end of the command…
2.Assume you are in the following path in terminal
/media/DATA/folder/filename
but you have come home directory so you execute the command cd ,unfortunately you again want the previously excuted path that is /media/DATA/folder/ it is simple to retrieve by the following command
cd -
keep rocking…..
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