Saving and Qutting
When altering a document, you are really rolling out improvements to a duplicate of it that vi has made. After you have rolled out a few improvements to a record, you can compose these to the first document to refresh it. Before stopping vi, you should compose every one of the progressions to the document to spare your work.
To spare a record as well as leave vi you should change to charge mode, on the off chance that you are not as of now in it. You can simply enter summon mode by squeezing <Esc> until the terminal beeps or flashes at you.
There are a few approaches to spare records and leave vi, each of which starts with you writing a colon character (:):
Spare the present record (compose document) however don’t exit. This charge fizzles if the record is perused as it were. You can spare under an alternate name by including a filename: for instance, :w newfile spares the present document as newfile if that record does not as of now exist. The charge :w keeps in touch with the document on the off chance that it as of now exists yet comes up short on the off chance that it is perused as it were. Utilize :w! to overwrite a read-just document. (The outcry check advises vi to disregard any mistake conditions.)
Stop vi. This charge comes up short in the event that you have rolled out improvements to a record since the last time you spared it. (In the event that you truly need to stop without sparing, sort :q!. This makes vi quit without sparing the present record.)
Spare the present record and leave vi. The summon 😡 is proportionate to this, aside from that it just spares the present record on the off chance that you have transformed it. These orders fall flat if the present document is perused just, or you are altering more than one record. See “Editing more than one record” for points of interest. (For data on read-just records, see “Access control for documents and catalogs
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