A simple bash script that mimics the functionality of the Unix/Linux wc (word count) command.

This script counts the number of lines, words, and bytes in text, either from a file or from standard input.

• Counts lines, words, and bytes
• Accepts input from a file or standard input (stdin)
• Returns formatted output similar to the standard wc command
• Provides error handling for non-existent files

./wc_script.sh filename.txt

This will output the line count, word count, byte count, and the filename.

cat filename.txt | ./wc_script.sh

or

echo "Hello World" | ./wc_script.sh

This will output just the line count, word count, and byte count.

• For file input: [lines] [words] [bytes] [filename]
• For stdin input: [lines] [words] [bytes]

$ ./wc_script.sh sample.txt
5 20 120 sample.txt

$ echo "Hello World" | ./wc_script.sh
1 2 12

1. Save the script to a file (e.g., wc_script.sh)
2. Make it executable:

   chmod +x wc_script.sh

3. Run it as shown in the usage examples above

• Bash shell
• Standard Unix utilities (cat, wc)