blktrace bno_plot.py: output comprehensive message when gnuplot not found

[blktrace.git] / btt / bno_plot.py

diff --git a/btt/bno_plot.py b/btt/bno_plot.py
index 19dfdfdb953a3bf4a4a1d9ed5e3a40084a20adfe..aa9248065b083f992c1218a551f1b0d170882503 100644 (file)
--- a/btt/bno_plot.py
+++ b/btt/bno_plot.py
@@ -114,13 +114,12 @@ if __name__ == '__main__':
 
        pid = os.fork()
        if pid == 0:
-               cmd = '/usr/bin/gnuplot %s/plot.cmds -' % tmpdir
+               cmd = 'gnuplot %s/plot.cmds -' % tmpdir
 
                if verbose: print 'Executing %s' % cmd
 
-               cmd = cmd.split(None)
                os.chdir(tmpdir)
-               os.execvp(cmd[0], cmd)
+               os.system(cmd)
                sys.exit(1)
 
        os.waitpid(pid, 0)