A pipe in Bash scripting, represented by “|”, is used to connect the output of one command directly as input to another. It enables efficient data manipulation and reduces the need for temporary storage.
To implement a pipe, place it between two commands. For instance, ‘command1 | command2’. Here, the standard output (stdout) from ‘command1’ becomes the standard input (stdin) for ‘command2’.
Consider an example where we want to count lines in a file containing the word “example”. We could use grep to find lines with “example” and pipe its output to wc -l to count these lines:
grep 'example' filename.txt | wc -l
