03-11-2015
First you need to precisely define "done". Then how do you handle error conditions?
And you need to take into account the only entity that knows for certain that the file is "done" - and correct - is whatever is writing it.
Even checking if a process has the file open isn't going to tell you the file is "done" with certainty - that ignores error conditions, such as when a network connection fails.
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BEAV(1) General Commands Manual BEAV(1)
NAME
beav - binary file editor and viewer
SYNOPSIS
beav [file...]
DESCRIPTION
This is a brief description of the minimal set of commands that are necessary to start using beav effectively. For more information,
review the file /usr/share/doc/beav/beav140.txt.gz.
The file-visit command, Ctl-X Ctl-V, can be used to read a file in for editing. The file can also be read in from the command line; beav
<edit_file>.
Data is displayed in one or more windows. These commands can be used to navigate around the windows.
move-back-char Ctl-B moves left
move-back-line Ctl-P moves up
move-forw-char Ctl-F moves right
move-forw-line Ctl-N moves down
window-delete Ctl-X 0 delete window
window-expand Ctl-X 1 expand window
The move-to-byte command, Ctl-X G, will prompt you for a byte position to move to.
These commands will insert a zero byte at the cursor position or delete the byte at that position.
insert-unit Ctl-X I
delete-forw-unit Esc D
The file-save command, Ctl-X Ctl-S, will save the data to the file if a change has been made.
The help command, Esc ?, will display a list of all commands and their current key bindings.
The abort-cmd command, Ctl-G, will abort any command that is in operation.
The quit-no-save command, Ctl-X Ctl-C, will exit beav. If there is any data that has not been saved you will be warned.
FILES
/usr/share/doc/beav/beav140.txt.gz
BEAV(1)