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elvprsv(8) [minix man page]

ELVPRSV(8)						      System Manager's Manual							ELVPRSV(8)

NAME
elvprsv - Preserve the the modified version of a file after a crash. SYNOPSIS
elvprsv ["-why elvis died"] /tmp/filename... elvprsv -R /tmp/filename... DESCRIPTION
elvprsv preserves your edited text after elvis dies. The text can be recovered later, via the elvprsv program. For UNIX-like systems, you should never need to run this program from the command line. It is run automatically when elvis is about to die, and it should be run (via /etc/rc) when the computer is booted. THAT'S ALL! For non-UNIX systems such as MS-DOS, you can either use elvprsv the same way as under UNIX systems (by running it from your AUTOEXEC.BAT file), or you can run it separately with the "-R" flag to recover the files in one step. If you're editing a file when elvis dies (due to a bug, system crash, power failure, etc.) then elvprsv will preserve the most recent ver- sion of your text. The preserved text is stored in a special directory; it does NOT overwrite your text file automatically. elvprsv will send mail to any user whose work it preserves, if your operating system normally supports mail. FILES
/tmp/elv* The temporary file that elvis was using when it died. /usr/preserve/p* The text that is preserved by elvprsv. /usr/preserve/Index A text file which lists the names of all preserved files, and the names of the /usr/preserve/p* files which contain their preserved text. BUGS
Due to the permissions on the /usr/preserve directory, on UNIX systems elvprsv must be run as superuser. This is accomplished by making the elvprsv executable be owned by "root" and turning on its "set user id" bit. If you're editing a nameless buffer when elvis dies, then elvprsv will pretend that the file was named "foo". AUTHOR
Steve Kirkendall kirkenda@cs.pdx.edu ELVPRSV(8)

Check Out this Related Man Page

EX(1)							      General Commands Manual							     EX(1)

NAME
ex, edit - text editor SYNOPSIS
ex [ - ] [ -v ] [ -t tag ] [ -r ] [ +command ] [ -l ] name ... edit [ ex options ] DESCRIPTION
Ex is the root of a family of editors: edit, ex and vi. Ex is a superset of ed, with the most notable extension being a display editing facility. Display based editing is the focus of vi. If you have not used ed, or are a casual user, you will find that the editor edit is convenient for you. It avoids some of the complexi- ties of ex used mostly by systems programmers and persons very familiar with ed. If you have a CRT terminal, you may wish to use a display based editor; in this case see vi(1), which is a command which focuses on the display editing portion of ex. DOCUMENTATION
The document Edit: A tutorial (USD:14) provides a comprehensive introduction to edit assuming no previous knowledge of computers or the UNIX system. The Ex Reference Manual - Version 3.7 (USD:16) is a comprehensive and complete manual for the command mode features of ex, but you cannot learn to use the editor by reading it. For an introduction to more advanced forms of editing using the command mode of ex see the editing documents written by Brian Kernighan for the editor ed; the material in the introductory and advanced documents works also with ex. An Introduction to Display Editing with Vi (USD:15) introduces the display editor vi and provides reference material on vi. In addition, the Vi Quick Reference card summarizes the commands of vi in a useful, functional way, and is useful with the Introduction. FILES
/usr/share/misc/exstrings error messages /usr/libexec/exrecover recover command /usr/sbin/expreserve preserve command /etc/termcap describes capabilities of terminals ~/.exrc editor startup file /tmp/Exnnnnn editor temporary /tmp/Rxnnnnn named buffer temporary /usr/preserve preservation directory SEE ALSO
awk(1), ed(1), grep(1), sed(1), grep(1), vi(1), termcap(5), environ(7) AUTHOR
Originally written by William Joy Mark Horton has maintained the editor since version 2.7, adding macros, support for many unusual terminals, and other features such as word abbreviation mode. BUGS
The undo command causes all marks to be lost on lines changed and then restored if the marked lines were changed. Undo never clears the buffer modified condition. The z command prints a number of logical rather than physical lines. More than a screen full of output may result if long lines are present. File input/output errors don't print a name if the command line `-' option is used. There is no easy way to do a single scan ignoring case. The editor does not warn if text is placed in named buffers and not used before exiting the editor. Null characters are discarded in input files, and cannot appear in resultant files. 4th Berkeley Distribution October 21, 1996 EX(1)
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