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Full Discussion: How to check if a file is open in editor?
Top Forums UNIX for Beginners Questions & Answers How to check if a file is open in editor? Post 303005359 by cherryTango on Tuesday 17th of October 2017 11:39:30 AM
Old 10-17-2017
How to check if a file is open in editor?
Hi there! I'm developing a program that allows the user to open and edit files using both an editor and the terminal. Once the user has finished editing the file an update is sent to the logbook that compares the file before and after it was edited - this can only be done if the file is closed (I think) to guarantee the user is finished editing it. Currently I am checking if the file is closed like this:
Code:
while : 
            do
                if pgrep -x "gedit" > /dev/null; then ###**NOT RELIABLE NEED TO CHANGE**###
                        tput cup 2 5 ; echo -e "${RED}           Can not update log until editor is closed!           ${NC}"
                    tput cup 3 5 ; echo -e "${boldon}Please finish editing your file and close gedit/text editor.${boldoff}"
                    sleep 1
                else
                    clear
                    updateLog
                fi
            done

This method does work but it isn't very effective as the if statement checks if ANY file is open in gedit - not the particular one the user has opened which is what I want to do. I played around with PID's and was unable to find a solution.

Is there a better way of doing this?

Thanks in advance,
-cherryTango
 

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LEARN ABOUT NETBSD

tput

TPUT(1) 						    BSD General Commands Manual 						   TPUT(1)

NAME

     tput, clear -- terminal capability interface

SYNOPSIS

     tput [-T term] attribute [attribute-args] ...

DESCRIPTION

     tput makes terminal-dependent information available to users or shell applications.  The options are as follows:

     -T      The terminal name as specified in the terminfo(5) database, for example, ``vt100'' or ``xterm''.  If not specified, tput retrieves
	     the ``TERM'' variable from the environment.

     tput outputs a string if the attribute is of type string; a number if it is of type integer.  Otherwise, tput exits 0 if the terminal has the
     capability and 1 if it does not, without further action.

     If the attribute is of type string, and takes arguments (e.g. cursor movement, the terminfo ``cup'' sequence) the arguments are taken from
     the command line immediately following the attribute.

     The following special attributes are available:

     clear	   Clear the screen (the terminfo(5) ``cl'' sequence).

     init	   Initialize the terminal (the terminfo(5) ``is2'' sequence).

     longname	   Print the descriptive name of the user's terminal type.

     reset	   Reset the terminal (the terminfo(5) ``rs1, rs2, rs3'' and ``rf'' sequence).

EXIT STATUS

     The exit status of tput is based on the last attribute specified.	If the attribute is of type string or of type integer, tput exits 0 if the
     attribute is defined for this terminal type and 1 if it is not.  If the attribute is of type boolean, tput exits 0 if the terminal has this
     attribute, and 1 if it does not.  tput exits 2 if any error occurred.

EXAMPLES

     tput cl cm 5 10	clear the screen and goto line 5 column 10

     tput cm 6 11 DC 6	goto line 6 column 11 and delete 6 characters

SEE ALSO

     termcap(3), termcap(5)

HISTORY

     The tput command appears in 4.4BSD.

BUGS

     tput can't really distinguish between different types of attributes.

     Not all terminfo entries contain the reset sequence, so using the init sequence may be more useful.

BSD
								September 29, 2009							       BSD
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