Learning Linux Shell Scripting - Second Edition

Quit – the q command

The q command is used for quitting the sed processing without proceeding to the next line:

    $ cat shopping.txt
  

The output will be as follows:

    Product     Quantity  Unit_Price  Total_Cost
    Apple         2        3           6
    Orange        2        .8          1.6
    Papaya        2       1.5          3
    Chicken       3       5           15
    Cashew        1      10           10
  

Here is an example:

    $ sed '3q' shopping.txt
  

The output will be as follows:

    Product  Quantity  Unit_Price  Total_Cost
    Apple     2         3          6
    Orange    2         .8         1.6
  

In this example, after printing the first to third lines, sed quits further processing.