seq用法

NAME
seq - print a sequence of numbers

SYNOPSIS
seq [OPTION]… LAST
seq [OPTION]… FIRST LAST
seq [OPTION]… FIRST INCREMENT LAST

DESCRIPTION
Print numbers from FIRST to LAST, in steps of INCREMENT.

   -f, --format=FORMAT          use printf style floating-point FORMAT   -s, --separator=STRING          use STRING to separate numbers (default: \n)   -w, --equal-width          equalize width by padding with leading zeroes   --help display this help and exit   --version          output version information and exit

If FIRST or INCREMENT is omitted, it defaults to 1. That is, an omitted INCREMENT defaults to 1 even when LAST is smaller than FIRST. FIRST, INCREMENT, and LAST are interpreted as floating point values. INCREMENT is usually positive if FIRST is smaller than LAST, and INCREMENT is usually negative if FIRST is greater than LAST. FORMAT must be suitable for printing one argument of type `double’; it defaults to %.PRECf if FIRST, INCREMENT, and LAST are all fixed point decimal numbers with maximum precision PREC, and to %g otherwise.