Unix Assignment

Name: NILAM

Part 1

Create a subdirectory called homeworkfile

Create a file called animal.data under the homeworkfile subdirectory with the following data:

Aardvark

Giraffe

Bat

Elephant

Camel

Donkey

Fox

a) Translate all of the characters to characters into another file called animal2.

What is the command?

$ cat >animal2 animal.data

b) Sort and display the output from the animal2 file.

what is the command?

$sort animal2

c) Append the date to the end of the animal2 file.

what is the command?

$ date >> animal2

d) Create a file called showenvironment

The file must display the environment (env command).

The file must display your current home directory ; use the environment variable HOME.

Display a line saying The current date is thedate. (thedate comes from the command date. Use `` around a command that is executed in the shell script.

Ex: echo "The calendar for June is `cal 6 2004`."

what is the contents of the showenvironment file?

Part 2

Use the following text file for the homework problems:

#cat homework6file

northwest NW Mary Black 3.5

western WE Susan White 2.0

southern SO Mark Brown 4.0

southeast SE Jimmy Green 2.5

eastern EA Nancy White 3.0

northeast NE Rob Brown 2.5

north NO Marla Brown 3.0

central CT Ann Green 3.5

Type in the following "sed" commands.

List the output and explain what the command did for each of these commands:

1) sed '/north/p' homework6file

2) sed -n '/north/p' homework6file

3) sed '4d' homework6file

4) sed '4,$d' homework6file

5) sed '$d' homework6file

6) sed '/south/d' homework6file

7) sed 's/west/east/g' homework6file

8) sed -n 's/^west/east/p' homework6file

9) sed -n 's/Brown/Yellow/gp' homework6file

10) sed -n 's/\(Mar\)y/\1ian/p' homework6file

11) sed -n '/south/,/north/p' homework6file

12) sed -n '5,/^north/p' homework6file

13) sed '/east/,/west/s/$/--vacation--/' homework6file

14)...