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Full Discussion: Files in a shared directory
Top Forums UNIX for Dummies Questions & Answers Files in a shared directory Post 302541456 by jl487 on Sunday 24th of July 2011 05:16:22 PM
Old 07-24-2011
Files in a shared directory

At work, we have a shared directory where we modify files via ssh. This can be an issue if two people unknowingly try to open and modify the same file. Sure, one user could send a mass e-mail/IM to the group, letting everyone know when he/she is accessing a file, but I was wondering if there was a better solution. Do you guys think it would be worth doing a chmod every time we open/close a file?

I would also like to know if there is a unix command/script to see who has a file open?
 

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uucp(1c)																  uucp(1c)

Name
       uucp, uulog, uuname - unix to unix copy

Syntax
       uucp [option...] source-file...	destination-file

       uulog [option...]

       uuname [option...]

Description
       The  command  copies  files  named by the source-file arguments to the destination-file argument.  A file name either may be a path name on
       your machine or may have the form

	      system-name!pathname

       where `system-name' is taken from a list of system names which knows about.  Shell metacharacters ?*[] appearing in the pathname part  will
       be expanded on the appropriate system.

       Pathnames  may  be  a  full  pathname, a pathname preceded by ~user, where user is a userid on the specified system and is replaced by that
       user's login directory, or anything else prefixed by the current directory.

       If the result is an erroneous pathname for the remote system, the copy will fail.  If the destination-file is a directory, the last part of
       the  source-file  name is used.	If a simple ~user destination is inaccessible to data is copied to a spool directory and the user is noti-
       fied by

       The command preserves execute permissions across the transmission and gives 0666 read and write permissions.  For further information, see

Options
       The following options are interpreted by

       -d Creates all necessary directories for the file copy.

       -c Uses the source file when copying out rather than copying the file to the spool directory.

       -m Sends you mail when the copy is complete.

       -nrec
	  Sends mail to the recipient.

       -W Expands only local files.  Normally files names are prepended with the current working directory if a full path is not  specified.   The
	  -W tells to expand local files only.

       The command prints a summary of and transactions that were recorded in the file

       The options cause to print logging information:

       -ssys
	  Displays information about work involving specified system.

       -uuser
	  Displays information about work involving specified user.

       The command lists the uucp names of known systems.

       -l Lists local system name.

Warnings
       The  domain  of	remotely  accessible  files  can (and for obvious security reasons, usually should) be severely restricted.  You will very
       likely not be able to fetch files by pathname.  Ask a responsible person on the remote system to send them to you.  For the  same  reasons,
       you will probably not be able to send files to arbitrary pathnames.

Restrictions
       All files received by will be owned by uucp.
       The  -m	option	will  only work sending files or receiving a single file.  (Receiving multiple files specified by special shell characters
       ?*[] will not activate the -m option.)

Files
       /usr/spool/uucp - spool directory
       /usr/lib/uucp/* - other data and program files
       /etc/acucap - shared autodial modem database

See Also
       mail(1), uux(1c), acucap(5)
       "Uucp Implementation Description," ULTRIX Supplementary Documentation, Vol. III:System Manager

																	  uucp(1c)
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