Hi There
Yeah my bad at the crontab
I just change the value to the right file name at the crontab
But although i run manually, still got error:

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-bash-3.00$ sh -x ./ek_ora/script/check_oracle_filesystem.ksh > a.out
+ + df -k
awk { print $4 }
+ grep /ek_
+ expr 0
filesize=0
+ [ 0 -lt 100 ]
+ mailx -s Oracle filesystem 0 has less than 100k free. adzuan@nc.com.my
---------------------------------------------------------------------

The script is just hung there....