In Linux, how can I get a list of files currently open in program X?
(Specifically, I'm on Fedora, and the program is Zend Studio, but I assume there's a general answer.)
+7
A:
Use e.g. lsof ("list open files") and filter the output, or use the -c programX option to restrict it to files opened by programX. This expression can be a wildcard.
Dirk Eddelbuettel
2010-08-18 14:48:06
I've tried `lsof | grep somefile`, where `somefile` is a file I know is open in Zend Studio, but it finds nothing. Same thing if a file is open in gedit. Maybe these files aren't technically "open" except for when the program is actively reading or saving them, and the rest of the time it just has a copy in memory and a reference to where the file is stored?
Nathan Long
2010-08-18 14:59:38
+1
A:
Install the program lsof if you haven't already. Get the pid of the running program. Run lsof -p [pid].
Paul Tomblin
2010-08-18 14:48:38
+4
A:
You can find symbolic links to the actual files in /proc/PID/fd where PID is the process ID.
paxdiablo
2010-08-18 14:48:47
Hmmm. I'm trying to determine the process ID - I did `ps -AF | grep zend` and got various listings (I have Zend Server running, etc), but nothing that looked like studio. I closed Zend Studio and tried again, and the list was the same. Any thoughts on how to determine the PID, other than "start killing them and see when it closes?"
Nathan Long
2010-08-18 15:06:20
+2
A:
ls -l /proc/<zend studio's pid>/fd will print a list of file descriptors. Those that map to files that were opened through open() will be symlinks to the file path used to open them.
Matt Joiner
2010-08-18 14:49:18
A:
lsof -p [PID]
Or, to get the PID in one go
lsof -p `pgrep [PROG_NAME]`
Or, even simpler
lsof -c [PROG_NAME]
Job
2010-08-18 14:51:23