reading a single line of a text file

davi_cabral · 10-29-2003, 12:09 PM

Hi people...
How can I read a single line of a text file?

A text file has a column with several lines of numbers, for example:

189025
89052098
43908
32
2308945
09432
.......

I need a command that returns me the i-th line of this file, such as line #3, 180, 0 or 1.
These numbers change with time, so I cannot use their contents as reference.

Thanks for help
Davi

druuna · 10-29-2003, 12:24 PM

sed (among others) can do this:

sed -n '2p' <file>

The second line of file <file> is shown. From within a script you can change the 2 into whatever linenumber you want.

Ranges are allowed as well:

sed -n '2,4p' <file>

shows lines 2, 3 and 4 of file <file>