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Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)vi.1 8.1 (Berkeley) 6/18/93 .\" .Dd June 18, 1993 .Dt VI 1 .Os BSD 3 .Sh NAME .Nm \&vi , view .Nd screen oriented (visual) display editor based on ex .Sh SYNOPSIS .Nm \&vi .Op Fl R .Op Fl l .Op Fl r .Op Fl t Ar tag .Op Fl w Ar n .Op Cm \&+ Ns Ar command .Ar name ... .Sh DESCRIPTION .Nm \&Vi (visual) is a display oriented text editor based on .Xr \&ex 1 . .Xr \&Ex and .Nm \&vi run the same code; it is possible to get to the command mode of .Xr \&ex from within .Nm \&vi and vice-versa. .Pp .Nm View is the same as .Dq "vi -R" , e.g. run in read-only mode. .Pp Available options: .Bl -tag -width xcommandx .It Fl R Read only. Changes to the file may not be written out. .It Fl l Sets options for editing .Tn LISP source (options .Ic showmatch and .Ic lisp ) . .It Fl r In the event of an editor or system crash, the .Fl r option will retrieve the last saved version of the specified file, or if no file is specified, a list of saved files is printed. .It Fl t Ar tag If tags are used (see .Xr ctags 1 ) the editor is postioned at .Ar tag . .It Fl w Ns Ar n The default window size is set to .Ar n . .It Cm \&+ Ns Ar command Enter the file with .Ar command. Useful for positioning on a string or line number. .El .Pp The .%T "Vi Quick Reference" card and the .%T "Introduction to Display Editing with Vi" provide full details on using .Nm \&vi . .Sh ENVIRONMENT The .Nm command uses the following environment variables. .Bl -tag -width Fl .It Ev EXINIT User specified startup values for .Xr \&ex and .Nm \&vi . Usually specified in the file .Pa ~/.exrc .It Ev HOME Default directory to search for the file .Pa ~/.exrc .It Ev SHELL Shell used for .Em escaped commands (with the .Xr \&ex .Ic \&:! command). .It Ev TERM Terminal type used to lookup terminal capabilities from the file .Pa /usr/share/misc/termcap . .It Ev TERMCAP If set, specifies an alternate termcap file. .El .Sh FILES .Bl -tag -width /usr/libexec/ex?.?preserve -compact .It Pa /usr/libexec/ex?.?strings error messages .It Pa /usr/libexec/ex?.?recover recover command .It Pa /usr/libexec/ex?.?preserve preserve command .It Pa /usr/share/misc/termcap describes capabilities of terminals .It Pa ~/.exrc editor startup file .It Pa /tmp/Ex Ns Em nnnnn editor temporary .It Pa /tmp/Rx Ns Em nnnnn named buffer temporary .It Pa /var/preserve preservation directory .El .Sh SEE ALSO .Xr awk 1 , .Xr \&ed 1 , .Xr grep 1 , .Xr sed 1 , .Xr grep 1 , .Xr \&vi 1 , .Xr termcap 5 , .Xr environ 7 .Rs .%T "Vi Quick Reference Card" .Re .Rs .%T "An Introduction to Display Editing with Vi" .Re .Sh BUGS Software tabs using .Sy \&^T work only immediately after the .Ic autoindent . .Pp Left and right shifts on intelligent terminals don't make use of insert and delete character operations in the terminal. .Pp The .Ic wrapmargin option can be fooled since it looks at output columns when blanks are typed. If a long word passes through the margin and onto the next line without a break, then the line won't be broken. .Pp Insert/delete within a line can be slow if tabs are present on intelligent terminals, since the terminals need help in doing this correctly. .Pp Saving text on deletes in the named buffers is somewhat inefficient. .Pp The .Ic source command does not work when executed as .Ic :source ; there is no way to use the .Ic :append , .Ic :change , and .Ic :insert commands, since it is not possible to give more than one line of input to a .Ic \&: escape. To use these on a .Ic :global you must .Ic Q to .Xr \&ex command mode, execute them, and then reenter the screen editor with .Nm \&vi or .Ic open . .Sh HISTORY The .Nm \&vi command appeared in .Bx 3.0 .