1 A printer queue

2 An IPC mechanism with destructive execute

3 An IPC mechanism with destructive write

4 An IPC mechanism with destructive read

No differences

2 IPC mechanism vs Non-IPC mechanism

3 Non-destructive read vs destructive read

4 Destructive read vs non-destructive read

1 sed 's/ */$//' test1

2 sed 's/ *$//' test1

3 sed 's/ *$//' test1

4 sed 's/ *$\/\/' test1

Ken Thompson

Dennis Ritchie

John Crosswhite

Douglas McIlroy

System V at AT&T lab

BSD (Berkeley Software Distribution)

Solaris at Sun Microsystems

MAC OS X at Apple

All of the above

Everything need to be done only by using commands.

It is command oriented

Easy to Use

User Friendly

Perl

Rubby

Shell

Java/ajax

Awk

Putty

Secure CRT

Telnet

Exceed

Only First and Second

First,Second and Third

A-2, B-3, C-4-, D-1, E- 5

A-1, B-5, C-4, D-3, E-2

A-1, B-4,C-5,D-2, E-3

Non of The above

Boot | Super | Data| Inode

Super | Boot | Data | Inode

Boot | Super | Inode | Data

Inode | Boot | Super | Data

Non of the above

1968

1871

1969

1975

Non

C

Bourne

Bash

Korn

Rsh

Csh

Bsh

Ksh

A-2, B-3, C-4-, D-1, E- 5

A-1, B-4,C-5,D-2, E-3

A-1, B-5, C-4, D-3, E-2

Non of the above

Perl

Shell

Rubby

Java/ajax

Awk

Putty

Secure CRT

Telnet Connection

Exceed

First,Third,Fourth

First Two only

System V at AT&T lab.

BSD (Berkeley Software Distribution)

Solaris at Sun Microsystems

MAC OS X at Apple

Only first two

First Three only

True

False

True

False

chpassword

changepword

passwd

pass -change