Hi back again this time needing help on shell scripts. I dunno if this is the right place to post this or if this is covered at all but i got a question to do with shell scripts and need some help.

This is the question

1) check that an argument was entered on the command line and that it is the name
of a directory file

2) if no argument was entered on the command line or the argument entered is not
the name of a directory file, then an error message should be output and the script
terminated

3) count the number of files (including files in sub-directories) which has only user
read, write and execute permissions and output relevant statements to tell the user
the number of files in this directory and its sub-directories that satisfy the above
criteria

This is what i have done so far:

#!/bin/csh
if ("$1" == "" ) then
echo a directory file name argument required
exit
endif
if (! (-d $1) ) then
echo $1 should be a directory
exit

I hope that what i have done covers point one but i dont know how to include the error message for point 2 nor the counting of files for point3 . I am pretty sure thought that for point 3 it uses the foreach statement.

Any Help.

Well does anyone know?

I've never used csh. but I have used bash.

if -d is check for directory then that portion logically looks correct.

for point 3, look into the "find" command, it has a flag to search for file types (dir, file, etc) and a bunch more