$ filecount /etc /etc: 153 ordinary 3 executable 7 links 124 directories $ echo $? 0 $ filecount /dev /dev: 170 ordinary 0 executable 8 links 17 directories $ echo $? 0 $ filecount / /: 1 ordinary 0 executable 0 links 20 directories $ echo $? 0 $ filecount /etc /dev / /etc: 153 ordinary 3 executable 7 links 124 directories /dev: 170 ordinary 0 executable 8 links 17 directories /: 1 ordinary 0 executable 0 links 20 directories $ echo $? 0 $ cd / $ filecount .: 1 ordinary 0 executable 0 links 20 directories $ echo $? 0 $ filecount -f -x -l -d .: 1 ordinary 0 executable 0 links 20 directories $ echo $? 0 $ filecount -f -x -l -d / /: 1 ordinary 0 executable 0 links 20 directories $ echo $? 0 $ filecount -l -d -x -f / /dev /: 1 ordinary 0 executable 0 links 20 directories /dev: 170 ordinary 0 executable 8 links 17 directories $ echo $? 0 $ filecount -z filecount: Illegal option -- z Usage: filecount [-dflx] [directory ...] $ echo $? 1 $ filecount -f / -z /dev /: 1 ordinary filecount: Invalid directory: -z $ echo $? 2 $ filecount -x /bin /bin: 22 executable $ echo $? 0 $ filecount -l /usr/bin /usr/bin: 459 links $ echo $? 0 $ filecount -f -x /usr/sbin /usr/sbin: 10 ordinary 445 executable $ echo $? 0 $ filecount -f /usr/include /usr/include: 130 ordinary $ echo $? 0 $ filecount -f /usr/include /usr/lib /usr/include: 130 ordinary /usr/lib: 15 ordinary $ echo $? 0 $ filecount -l .: 0 links $ echo $? 0 $ filecount . .: 1 ordinary 0 executable 0 links 20 directories $ echo $? 0 $ cd /etc $ filecount -l -d -f .: 153 ordinary 7 links 124 directories $ echo $? 0 $ filecount -f -x /usr/include /usr/sbin/ /usr/include: 130 ordinary 0 executable /usr/sbin/: 10 ordinary 445 executable $ echo $? 0 $ filecount /lost filecount: Invalid directory: /lost $ echo $? 2 $ filecount / /lost /: 1 ordinary 0 executable 0 links 20 directories filecount: Invalid directory: /lost $ echo $? 2 $ filecount /lost / filecount: Invalid directory: /lost $ echo $? 2 $ filecount /usr/bin/grep filecount: Invalid directory: /usr/bin/grep $ echo $? 2 $ filecount /u* /usr: 0 ordinary 0 executable 1 links 11 directories $ echo $? 0 $ filecount /bin /bin: 0 ordinary 22 executable 112 links 0 directories $ echo $? 0 $ filecount /b* /bin: 0 ordinary 22 executable 112 links 0 directories /boot: 19 ordinary 0 executable 3 links 3 directories $ echo $? 0 $ filecount /usr/include/s* filecount: Invalid directory: /usr/include/sched.h $ echo $? 2 $ filecount -z -z filecount: Illegal option -- z Usage: filecount [-dflx] [directory ...] $ echo $? 1 $ filecount -f -f /usr/lib /usr/lib: 15 ordinary $ echo $? 0 $ filecount -f /usr/lib/ /usr/sbin/ -f /usr/lib/: 15 ordinary /usr/sbin/: 10 ordinary filecount: Invalid director ...

1. $ filecount /etc
/etc: 153 ordinary 3 executable 7 links 124 directories
$ echo $?
0
$ filecount /dev
/dev: 170 ordinary 0 executable 8 links 17 directories
$ echo $?
0
$ filecount /
/: 1 ordinary 0 executable 0 links 20 directories
$ echo $?
0
$ filecount /etc /dev /
/etc: 153 ordinary 3 executable 7 links 124 directories
/dev: 170 ordinary 0 executable 8 links 17 directories
/: 1 ordinary 0 executable 0 links 20 directories
$ echo $?

2. 0
$ cd /
$ filecount
.: 1 ordinary 0 executable 0 links 20 directories
$ echo $?
0
$ filecount -f -x -l -d
.: 1 ordinary 0 executable 0 links 20 directories
$ echo $?
0
$ filecount -f -x -l -d /
/: 1 ordinary 0 executable 0 links 20 directories
$ echo $?
0
$ filecount -l -d -x -f / /dev
/: 1 ordinary 0 executable 0 links 20 directories
/dev: 170 ordinary 0 executable 8 links 17 directories
$ echo $?

3. 0
$ filecount -z
filecount: Illegal option -- z
Usage: filecount [-dflx] [directory ...]
$ echo $?
1
$ filecount -f / -z /dev
/: 1 ordinary
filecount: Invalid directory: -z
$ echo $?
2
$ filecount -x /bin
/bin: 22 executable
$ echo $?
0
$ filecount -l /usr/bin
/usr/bin: 459 links
$ echo $?

4. 0
$ filecount -f -x /usr/sbin
/usr/sbin: 10 ordinary 445 executable
$ echo $?
0
$ filecount -f /usr/include
/usr/include: 130 ordinary
$ echo $?
0
$ filecount -f /usr/include /usr/lib
/usr/include: 130 ordinary
/usr/lib: 15 ordinary
$ echo $?
0
$ filecount -l
.: 0 links
$ echo $?
0

5. $ filecount .
.: 1 ordinary 0 executable 0 links 20 directories
$ echo $?
0
$ cd /etc
$ filecount -l -d -f
.: 153 ordinary 7 links 124 directories
$ echo $?
0
$ filecount -f -x /usr/include /usr/sbin/
/usr/include: 130 ordinary 0 executable
/usr/sbin/: 10 ordinary 445 executable
$ echo $?
0
$ filecount /lost
filecount: Invalid directory: /lost
$ echo $?
2

6. $ filecount / /lost
/: 1 ordinary 0 executable 0 links 20 directories
filecount: Invalid directory: /lost
$ echo $?
2
$ filecount /lost /
filecount: Invalid directory: /lost
$ echo $?
2
$ filecount /usr/bin/grep
filecount: Invalid directory: /usr/bin/grep
$ echo $?
2
$ filecount /u*
/usr: 0 ordinary 0 executable 1 links 11 directories
$ echo $?
0
$ filecount /bin

7. /bin: 0 ordinary 22 executable 112 links 0 directories
$ echo $?
0
$ filecount /b*
/bin: 0 ordinary 22 executable 112 links 0 directories
/boot: 19 ordinary 0 executable 3 links 3 directories
$ echo $?
0
$ filecount /usr/include/s*
filecount: Invalid directory: /usr/include/sched.h
$ echo $?
2
$ filecount -z -z
filecount: Illegal option -- z
Usage: filecount [-dflx] [directory ...]
$ echo $?
1
$ filecount -f -f /usr/lib

8. /usr/lib: 15 ordinary
$ echo $?
0
$ filecount -f /usr/lib/ /usr/sbin/ -f
/usr/lib/: 15 ordinary
/usr/sbin/: 10 ordinary
filecount: Invalid directory: -f
$ echo $?
2
$ filecount -f -x --
.: 153 ordinary 3 executable
$ echo $?
0
$ filecount -f -x -- -somedir
filecount: Invalid directory: -somedir
$ echo $?
2
$ filecount -f -x -- / -somedir

9. /: 1 ordinary 0 executable
filecount: Invalid directory: -somedir
$ echo $?
2
Write a Korn shell script filecount which counts the number of
ordinary files (defined as everything except the following),
number
of executable files, number of links, and number of directories
in one or more directories which are provided as commandline
arguments.
Requirements
? The above counts include dot files, except that . and .. are not
included in the directory count (investigate the -A option to ls).
? Files in sub-directories are not included in the counts.
? The distinction between file types is the same as that of ls -F.
? If the script is invoked with no directory name provided, it
must work
on the current directory. Otherwise, it must produce a single
line of
output for each directory it processes, as in the following

10. sample (on
fictitious locations):
1 $ ./filecount
2 . : 10 ordinary 9 executable 3 links 5 directories
3 $
4 $ ./filecount courses tmp
5 courses: 2 ordinary 8 executable 7 links 42 directories
6 tmp : 8 ordinary 17 executable 5 links 51 directories
? The script must support the following command-line options:
-f: include the count of ordinary files in the output
-x: include the count of executable files in the output
-l: include the count of links in the output
-d: include the count of directories in the output
If any of these options are specified when the script is called,
then only
the requested totals must be printed for each directory.

11. ? If an invalid option <option> is given, the script must print
./filecount: Illegal option: <option> and a usage message
to stderr and halt with a exit status 1 as shown below.
1 $ ./filecount ?t
2 ./filecount: Illegal option ?t
3 Usage : filecount [?dflx] [directory . . . ]
4 $ echo $?
5 1
? If an invalid directory <directory> is given, the script must
print
./filecount: Invalid directory: <directory> and a
usage message to stderr and halt with a exit status 2.
1 $ ./filecount somedir
2 ./filecount: Invalid directory: somedir
3 Usage : filecount [?dflx] [directory . . . ]
4 $ echo $?
5 2

12. ? The script must execute using the Korn shell interpreter (ksh).
You
may not use C, C++, Perl, Python, Ruby, or any similar
language.
? The script must run at the command line as: ./filecount
[-dflx] [directory ...].
? The script must have -rwxr-x-- permission.
? The script must terminate with a proper exit statement.
? Do not use any specific aspects of your environment within
the script.
In other words, use native Linux command names as opposed to
your
environment¡¯s aliases for those commands and do not rely on
any
specific aspect of your environment (e.g., values of particular
shell
variables).
? Each line of output must separate the directory from the
counts with
a single colon (:) followed by exactly two spaces. Delimit each
count

13. from its label with a single space and delimit each count label
pair
from each other with exactly two spaces (exactly as shown
above). Always
print the ordinary count first, followed by the executable count,
then the link count, and finally the directory count, if requested,
regardless
of the order in which the options are given on the command
line.
? Each line of output must not contain any leading and trailing
whitespace
or any extraneous text.
? All options must precede all directories on a command line.
? Use - to indicate the end of options.
? Options can be given as singletons (e.g., -x) or in any
combinations
(e.g., -fx, -xf, -fxld).
? The file counts are mutually-exclusive. One file must never be
counted twice. Anything that is not a directory, symbolic link,
or executable,
is an ordinary file.

14. ? Executable files are to be counted as executable only, not
executable
and ordinary.
? The script must not create any new files or remove any
existing files.
? The script must not create any new directories or remove any
existing
directories.
You are encouraged to make creative use of the given tools
(grep, sed,
awk, and others) and string operators (i.e., do not reinvent the
wheel). Remember,
grep, sed, and awk can be used on shell variables (e.g., $(echo
$PATH | sed ¡¯s/:/2/g¡¯)). Also, explore getopts (though not
necessary),
ls -A, print -n, and print - -n. If designed properly, the
script required for this homework should occupy no more than
100 lines
of code.