Introduction to the UNIX Operating System * Pima Community College * CSC137 -- 4.9 Shell script -- dir

4.9 Shell script -- dir

4.9 Shell script -- dir

Using a text editor, create a shell program. Your shell program will probably need to use cut, ls, expr, grep, paste, wc, cat, hostname, and cal. It will probably also use pipes, redirection, variables, and command substitution.

Your program should do the following:

"Display" the number of days in the current month. For example:
```
September 1996 has 30 days
```
"Display" the number of directories in the root directory. For example:
```
The root directory on gort has 12 directories
```

"Display" the root directory in the following format. This is what the ls -l / command gives:

drwxr-xr-x  2 root    2048 Jun 30 14:26 bin
drwxr-xr-x  2 root     512 Jun  2 15:59 bsd-src
-rw-r--r--  1 root  147456 Sep  7 14:25 core
-rw-r--r--  1 root     925 Apr  8 18:00 dflt.DECterm
drwxr-xr-x  3 root    3072 Sep  8 14:45 dev
drwxr-xr-x  6 root    6656 Sep  9 22:25 etc
lrwxr-xr-x  1 root       7 Feb 24  1993 lib -> usr/lib
drwxr-xr-x  2 root    8192 Feb 24  1992 lost+found
drwxr-xr-x  2 root     512 Aug  7  1992 mnt
drwxr-xr-x  2 root     512 Feb 24  1993 opr
drwxr-xr-x  3 root     512 Aug  3 12:44 public
lrwxr-xr-x  1 root       7 Feb 24  1993 sys -> usr/sys
drwxrwxrwt  5 root    1024 Sep 12 18:46 tmp
-rw-r--r--  1 root   11568 Jul 24  1992 ultrixboot
drwxr-xr-x 27 root    1024 Jun 10 11:28 usr
drwxr-xr-x  9 root     512 Aug 19 15:43 usr2
-rwxr-xr-x  1 root 3448280 Feb 24  1993 vmunix

This is what I would like your output to look like:

September 1993 has 30 days
The root directory on gort has 12 directories

   2048 r-x  2 14:26 bin
    512 r-x  2 15:59 bsd-src
   3072 r-x  3 14:45 dev
   6656 r-x  6 22:25 etc
   8192 r-x  2  1992 lost+found
    512 r-x  2  1992 mnt
    512 r-x  2  1993 opr
    512 r-x  3 12:44 public
   1024 rwt  5 18:46 tmp
   1024 r-x 27 11:28 usr
    512 r-x  9 15:43 usr2

Make a printout of your output and shell script, mark it with:

your name
TABER CSC137
Lab 4.9: Shell script --- dir

Place the lab in the instructor hand-in box in BUS R6E, the "terminal room".

Instructor: ltaber@pima.edu** My new Home on phRed** The Pima College Site** The Mad Dr. G.'s home page on phred.

4.9 Shell script -- dir