time of execution of script

i want to test whether a script has been executed in last 15 days or not....please help how can i do this...is there any copmmand there to know timings of last execution of any script

The file system keeps track of last access time; it's not exactly the same thing, but might work as an approximation. Certainly if the access time is further back, it has not been executed (or read, or written to) in that time period.

No. You can do a ls command with -l and use the -u option but if someone did a 'cat yourscript', then the time would be when that happened versus if someone actually ran the script.

YES ls -lu is working but ,can anyone can give solution which only show last time execution on script not include cat like command.

should i write----
ls -lu <script_name> or ls -l -u <script_name>

plz suggest---

ls -lu <script name> is working

thanks a lot...we can do it with find & atime command also

thanks a lot...we can do using it with find & atime command also

In some systems you can turn on accounting. See the man pages on accton and the corresponding commands. In Linux, this is "lastcomm" which allows you to see when a particular command was run.