Introduction
1969 at AT&T Bell Labs by Ken Thompson and Dennis
When was UNIX development started?
Shell is an interpreter between user and Kernel
What is shell?
$ ls
Which is the command used for listing files?
i I
r R
o O
Give the input mode commands in vi editor
Shell programming is combination of commands to get the desired output which are used frequently
What is shell scripting
Hardware
kernel
shell
Layers in UNIX Architecture
C Shell, Bourne Shell and Korn Shell
Name the different types of shells
o/p: rwxr--r--
chmod 644 abc
G
what is the command for Absolute movement in vi editor?
if condition true
then
commands
fi
write the syntax of if