Program 3 B.Sc Computer Science BCA Linux and Shell Programming - Lab Bharathiar University - Write a Shell Script to implement the following: pipes, Redirection and tee commands

 

B.Sc Computer Science 

Linux and Shell Programming - Lab  

Bharathiar University 

Program  3.  Write a Shell Script to implement the following: pipes, Redirection and tee commands

Source Code

# Demonstrate pipes

echo "Adding two numbers with use of pipes"

echo "Enter two numbers to perform addition:"

read a

read b

echo "Addition of $a and $b is:"

echo "$a + $b" | bc

echo

# Define a filename

filename="output.txt"

# Demonstrate redirection

echo "Redirection to output.txt file:" > $filename

echo "Hello, world!" >> $filename

echo "Goodbye, world!" >> $filename

echo "Contents of output.txt file:"

cat $filename

echo

# Demonstrate tee command

echo "Display and Writes to file using tee command:"

echo "Hai friend!" | tee -a $filename

echo "How are you?" | tee -a $filename

echo

# Display the contents of the file

echo "Contents of $filename after tee command:"

cat $filename

SAMPLE OUTPUT: