sapmnt/SID full?????

Well in the global directory sapmnt/EWP the status is

du -sk *|sort -nr|head -10

1606304 270JOBLG

12072 000JOBLG

3712 SSD

992 SLOGJO

888 WF_LOG_000000106068_270

888 WF_LOG_000000101088_270

880 WF_LOG_000000097069_270

864 WF_LOG_000000092064_270

856 WF_LOG_000000079062_270

856 WF_LOG_000000075045_270

Well i found this command to delete old job logs on Unix

find /sapmnt/EWP/global/270JOBLG -mtime +10 -type f -exec rm -f {} \;

But there is no effect

the client 270 job log is increasing

Also am not able to login into SAP system hence cant use RSTBTCDEL

Any body knows some different command to delete job log

Help appreciated