A shell pipe is a way to connect the output of one program to the input of another program without any temporary file.
Syntax
command1 | command2 command1 | command2 | commandN command1 arg1 | command2 arg1 arg2 get_data_command | verify_data_command | process_data_command | format_data_command > output.data.file get_data_command < input.data.file | verify_data_command | process_data_command | format_data_command > output.data.file
- You can connect two or more commands at a time.
- The data path which joins two programs is called a pipe.
- The vertical bar (|) is the pipe symbol.
- A shell pipe supports Unix philosophy of chaining programs thorougher to complete complex task.
- Redirection in pipes is also allowed.
- The data path only works in one direction
