是否可以使用bash脚本在终端中打印旋转光标? [英] Is it possible to print a spinning cursor in a terminal using bash scripting?

问题描述

我见过使用 c ， python ， ruby​​ 但使用bash的解决方案.我发现最接近的设计是使用此ruby控制台解决方案

I have seen solutions which use c,python,ruby but bash. The closest possible design I found was using this ruby console solution

10.times {
  print "/"
  sleep(0.1)
  print "\b"
  print "-"
  sleep(0.1)
  print "\b"
  print "\\"
  sleep(0.1)
  print "\b"
  print "|"
  sleep(0.1)
  print "\b"
}

我想要一种类似的效果.

I want an effect something simillar to that.

推荐答案

旋转器很好，但是如果您真的想要一个可控制的进度表，该进度表知道您要处理的IO，请查看 pv .

Spinners are nice, but if you really want a controllable progress meter that is aware of the IO you're dealing with, take a look at pv.

这是一个快速而且肮脏的微调器.( sleep 的许多非标准实现会让您睡一秒钟.)

Here's a quick-and-dirty spinner. (Many nonstandard implementations of sleep will let you sleep for fractions of a second.)

spin() {
   local -a marks=( '/' '-' '\' '|' )
   while [[ 1 ]]; do
     printf '%s\r' "${marks[i++ % ${#marks[@]}]}"
     sleep 1
   done
 }

POSIX Sh

spin() {
  i=0
  marks='/ - \ |'
  while true; do
    if [ $# -lt 4 ]; then
      set -- "$@" $marks
    fi
    shift $(( (i+1) % $# ))
    printf '%s\r' "$1"
    sleep 1
  done
}

这篇关于是否可以使用bash脚本在终端中打印旋转光标?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！