How to check if a file is open in editor? Post: 303005359

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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

10-17-2017

Registered User

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

cherryTango

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LEARN ABOUT NETBSD

vipw

VIPW(8) 						    BSD System Manager's Manual 						   VIPW(8)

NAME

     vipw -- edit the password file

SYNOPSIS

     vipw [-d directory]

DESCRIPTION

     vipw edits the password file after setting the appropriate locks, and does any necessary processing after the password file is unlocked.  If
     the password file is already locked for editing by another user, vipw will ask you to try again later. The default editor for vipw is vi(1).

     vipw performs a number of consistency checks on the password entries, and will not allow a password file with a ``mangled'' entry to be
     installed.  If vipw rejects the new password file, the user is prompted to re-enter the edit session.

     Once the information has been verified, vipw uses pwd_mkdb(8) to update the user database.  This is run in the background, and, at very large
     sites could take several minutes.	Until this update is completed, the password file is unavailable for other updates and the new information
     is not available to programs.

     The options are as follows:

     -d directory
	   Change the root directory of the password file from ``/'' to directory.

     If a vipw session is killed it may leave ``/etc/ptmp'', which will cause future vipw executions to fail with ``vipw: the passwd file is
     busy'', until it is removed.

ENVIRONMENT

     If the following environment variable exists it will be used by vipw:

     EDITOR  The editor specified by the string EDITOR will be invoked instead of the default editor vi(1).

FILES

     /etc/master.passwd 	       The current password file.
     /etc/ptmp			       Temporary copy of the password file used while editing.

SEE ALSO

     chpass(1), passwd(1), pwhash(1), passwd(5), passwd.conf(5), pwd_mkdb(8), user(8)

HISTORY

     The vipw command appeared in 4.0BSD.

BSD
								 September 4, 2005							       BSD

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