seq

最新推荐文章于 2025-02-20 17:12:21 发布

转载最新推荐文章于 2025-02-20 17:12:21 发布 · 520 阅读

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本文详细介绍了seq命令的功能、参数及其用法，包括如何使用-f、-s、-w选项定制输出格式，以及如何通过FIRST、INCREMENT、LAST参数生成指定范围内的等间隔数字序列。

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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.