how can I execute bash file by using exec or system

hello, I try to execute bash script file by using following script exec('/path/test.sh'); this test.sh file includes the Global Mapping Tools script and create map.ps file taht is the epicenter distribution file of the earthquakes. I have obtain epicenters.csv file by using PHP-MYSQL relation $query = "SELECT Date , Time , Mag , Lat , Lon , Depth INTO OUTFILE '$filename' FIELDS TERMINATED BY ',' FROM list WHERE Mag >0"; than after I try to draw epicenter distribution map by using test.sh file.All this can easily run on the console but by using php I could not execute test.sh file. I also use system('/path/test.sh'); But also this could not run bash file. Are there any people to solve my problem. Thanks all. Murat ______________________________________ XamimeLT - installed on mailserver for domain @deprem.gov.tr Queries to: postmaster@deprem.gov.tr ______________________________________ The views and opinions expressed in this e-mail message are the sender's own and do not necessarily represent the views and the opinions of Earthquake Research Dept. of General Directorate of Disaster Affairs. Bu e-postadaki fikir ve gorusler gonderenin sahsina ait olup, yasal olarak T.C. B.I.B. Afet Isleri Gn.Mud. Deprem Arastirma Dairesi'ni baglayici nitelikte degildir.