System Administration Guide, Volume 1

How to Find Out If a PCMCIA Memory Card Is Still In Use

  1. Become superuser.

  2. Invoke the fuser(1M) command.

    The fuser command lists the processes that are currently accessing the CD that you specify.

    # fuser -u [-k] pcmem0


    Displays the user of the PCMCIA memory card. 


    Kills the process accessing the PCMCIA memory card. 

Example--Finding Out If a PCMCIA Memory Card Is Still in Use

In the following example, the processes 6400c and 6399c are accessing the /pcmem/pcmem0 directory, and the process owners are root and smith, respectively.

# fuser -u /pcmem/pcmem0
/pcmem/pcmem0: 6400c(root)  6399c(smith)

You can kill the processes individually (as superuser), or you can use the fuser command with the -k option, which kills all the processes accessing that file system:

# fuser -u -k /pcmem/pcmem0
/pcmem/pcmem0: 6400c(root)Killed  6399c(smith)Killed

The fuser command might not always identify all the killed processes. To be sure, run it again with the -u option.