Work around the bugginess of fuser -s prior to version 23 of psmisc.

1 files changed, 1 insertions, 1 deletions

diff --git a/gpsfake.py b/gpsfake.py
index b65a863a..3a05bb1e 100644
--- a/gpsfake.py
+++ b/gpsfake.py
@@ -206,7 +206,7 @@ class FakeGPS:
         "Is the slave device of this pty opened?"
         if self.verbose:
             sys.stderr.write("slave_is_open() begins")
-        isopen = os.system("fuser -s " + self.slave) == 0
+        isopen = os.system("fuser " + self.slave + " > /dev/null 2>&1") == 0
         if self.verbose:
             sys.stderr.write("slave_is_open() ends")
         return isopen