week5.5

5. Write a shell script that deletes all the even-numbered lines in a text file.
#!/bin/bash

# Check that a file has been provided as an argument
if [ $# -eq 0 ]; then
    echo "Please provide a file name as an argument"
    exit 1
fi

# Check that the file exists and is a regular file
if [ ! -f "$1" ]; then
    echo "$1 is not a file or does not exist"
    exit 1
fi

# Delete all even-numbered lines in the file using sed
sed -i.bak '1d;n;d' "$1"

# Print a confirmation message
echo "Deleted all even-numbered lines in $1"

report[1].txt
Displaying report[1].txt.
Shell Programs in Files
Hemantha Kumar Kalluri
•
Apr 18
10 points
Due Apr 20
1. Write a
shell script that reads the contents in a text file and removes all the blank
spaces in

them 

2. Write a shell script to translate all the characters
to lowercase in a given text file.

3. Write a shell script to combine any three text files
into a single file (append them in the order as they appear in the arguments)
and display the word count.
4. Write a shell script that, given a file name as the
argument, will write the even-numbered line to a file with the name evenfile and odd-numbered lines to a file called oddfile.