UNIX for Dummies Questions & Answers

Hi i have a ques in Shell scripting:

ques: accept a filename as a command line argument. Validate the input and display the last modification date for that file.

Help pls.

What have you done so far ?

Looks like homework..

What i have done is: accepted user input and done validation to check if the file is a valid one.
But i cant retrieve the last modification date...


I have tried using :
ls -l , put it into a file and then used cut command to display the date... but the cut command is not working!

you can try this..

ls -l filename|awk '{print $6 $7 $8}'

or if you want to catch in some variables for month,day,hour
use this in your script.

modf_time=`ls -l filename`

time_month=`echo $modf_time | awk '{print $6}'`
time_day=`echo $modf_time | awk '{print $7}'`
time_hrmin=`echo $modf_time | awk '{print $8}'`
time_hr=`echo $time_hrmin | cut -d ':' -f1`
time_min=`echo $time_hrmin | cut -d ':' -f2`

echo $time_month $time_day $time_hr $time_min

Thank you...