lines

lines

lines is a command line filter to print or omit lines.

Description

lines is a line filter that either prints a range of lines, or skips some specified number of lines from the header, and some specified number of lines from the footer.

Example

All of the examples assume the following input file, sample.txt.

1: test
2: test
3: test
4: test
5: test
6: test
7: test
8: test
9: test
10: test

Printing a single line

$ lines sample.txt -r 3
3: test

Printing a range of lines

$ lines sample.txt -r 4-7
4: test
5: test
6: test
7: test

Either or both of the ends of the range parameter may be omitted. When the first number is omitted, printing starts at the first line. When the final number is omitted, printing ends at the final line.

$ lines sample.txt -r -3
1: test
2: test
3: test

$ lines sample.txt -r 7-
7: test
8: test
9: test
10: test

Omitting one or more header lines

$ lines sample.txt -t 2
4: test
5: test
6: test
7: test
8: test
9: test
10: test

Omitting one or more footer lines

$ lines sample.txt -b 2
1: test
2: test
3: test
4: test
5: test
6: test
7: test
8: test

Omitting lines from both the header and footer

$ lines sample.txt -t 3 -b 2
4: test
5: test
6: test
7: test
8: test