l [linespec]
If linespec is omitted, lists the next few lines. Otherwise lists
the lines specified by linespec, which can be one of the following:
- line
Lists the single line line.
- min+incr
Lists incr+1 lines starting at
min.
- min-max
Lists lines min through max.
- subname
Lists the first few lines from subroutine subname.
Also see the w and - commands.