基于Edouard Lopez的工作，我创建了一个适合屏幕大小的进度条。来看看。

它也发布在Git Hub上。

#!/bin/bash
#
# Progress bar by Adriano Pinaffo
# Available at https://github.com/adriano-pinaffo/progressbar.sh
# Inspired on work by Edouard Lopez (https://github.com/edouard-lopez/progress-bar.sh)
# Version 1.0
# Date April, 28th 2017

function error {
  echo "Usage: $0 [SECONDS]"
  case $1 in
    1) echo "Pass one argument only"
    exit 1
    ;;
    2) echo "Parameter must be a number"
    exit 2
    ;;
    *) echo "Unknown error"
    exit 999
  esac
}

[[ $# -ne 1 ]] && error 1
[[ $1 =~ ^[0-9]+$ ]] || error 2

duration=${1}
barsize=$((`tput cols` - 7))
unity=$(($barsize / $duration))
increment=$(($barsize%$duration))
skip=$(($duration/($duration-$increment)))
curr_bar=0
prev_bar=
for (( elapsed=1; elapsed<=$duration; elapsed++ ))
do
  # Elapsed
prev_bar=$curr_bar
  let curr_bar+=$unity
  [[ $increment -eq 0 ]] || {  
    [[ $skip -eq 1 ]] &&
      { [[ $(($elapsed%($duration/$increment))) -eq 0 ]] && let curr_bar++; } ||
    { [[ $(($elapsed%$skip)) -ne 0 ]] && let curr_bar++; }
  }
  [[ $elapsed -eq 1 && $increment -eq 1 && $skip -ne 1 ]] && let curr_bar++
  [[ $(($barsize-$curr_bar)) -eq 1 ]] && let curr_bar++
  [[ $curr_bar -lt $barsize ]] || curr_bar=$barsize
  for (( filled=0; filled<=$curr_bar; filled++ )); do
    printf "▇"
  done

  # Remaining
  for (( remain=$curr_bar; remain<$barsize; remain++ )); do
    printf " "
  done

  # Percentage
  printf "| %s%%" $(( ($elapsed*100)/$duration))

  # Return
  sleep 1
  printf "\r"
done
printf "\n"
exit 0

享受

对我来说，到目前为止最容易使用和最好看的是命令pv或bar，就像某人已经写的那样

例如:需要用dd备份整个驱动器

通常你使用dd if="$input_drive_path" of="$output_file_path"

对于pv，你可以这样做:

如果dd = input_drive_path美元“硒| | dd =“output_file_path美元”

进程直接进入STDOUT，如下所示:

    7.46GB 0:33:40 [3.78MB/s] [  <=>                                            ]

做完之后，总结就出来了

    15654912+0 records in
    15654912+0 records out
    8015314944 bytes (8.0 GB) copied, 2020.49 s, 4.0 MB/s

我更喜欢使用dialog和——gauge参数。在许多发行版的.deb包安装和其他基本配置中经常使用。所以你不需要重新发明轮子……再一次

只要输入一个从1到100的int值@stdin。举个简单而愚蠢的例子:

for a in {1..100}; do sleep .1s; echo $a| dialog --gauge "waiting" 7 30; done

我有这个/bin/Wait文件(带有chmod u+x perms)用于烹饪

#!/bin/bash
INIT=`/bin/date +%s`
NOW=$INIT
FUTURE=`/bin/date -d "$1" +%s`
[ $FUTURE -a $FUTURE -eq $FUTURE ] || exit
DIFF=`echo "$FUTURE - $INIT"|bc -l`

while [ $INIT -le $FUTURE -a $NOW -lt $FUTURE ]; do
    NOW=`/bin/date +%s`
    STEP=`echo "$NOW - $INIT"|bc -l`
    SLEFT=`echo "$FUTURE - $NOW"|bc -l`
    MLEFT=`echo "scale=2;$SLEFT/60"|bc -l`
    TEXT="$SLEFT seconds left ($MLEFT minutes)";
    TITLE="Waiting $1: $2"
    sleep 1s
    PTG=`echo "scale=0;$STEP * 100 / $DIFF"|bc -l`
    echo $PTG| dialog --title "$TITLE" --gauge "$TEXT" 7 72
done

if [ "$2" == "" ]; then msg="Espera terminada: $1";audio="Listo";
else msg=$2;audio=$2;fi 

/usr/bin/notify-send --icon=stock_appointment-reminder-excl "$msg"
espeak -v spanish "$audio"

所以我可以写:

等"34分钟" "预热烤箱"

or

等待“12月31日”“新年快乐”

我需要一个进度条，将适合弹出气泡消息(通知-发送)，以代表电视音量水平。最近我一直在用python写一个音乐播放器，而电视画面大部分时间都是关闭的。

终端输出样本

Bash脚本

#!/bin/bash

# Show a progress bar at step number $1 (from 0 to 100)


function is_int() { test "$@" -eq "$@" 2> /dev/null; } 

# Parameter 1 must be integer
if ! is_int "$1" ; then
   echo "Not an integer: ${1}"
   exit 1
fi

# Parameter 1 must be >= 0 and <= 100
if [ "$1" -ge 0 ] && [ "$1" -le 100 ]  2>/dev/null
then
    :
else
    echo bad volume: ${1}
    exit 1
fi

# Main function designed for quickly copying to another program 
Main () {

    Bar=""                      # Progress Bar / Volume level
    Len=25                      # Length of Progress Bar / Volume level
    Div=4                       # Divisor into Volume for # of blocks
    Fill="▒"                    # Fill up to $Len
    Arr=( "▉" "▎" "▌" "▊" )     # UTF-8 left blocks: 7/8, 1/4, 1/2, 3/4

    FullBlock=$((${1} / Div))   # Number of full blocks
    PartBlock=$((${1} % Div))   # Size of partial block (array index)

    while [[ $FullBlock -gt 0 ]]; do
        Bar="$Bar${Arr[0]}"     # Add 1 full block into Progress Bar
        (( FullBlock-- ))       # Decrement full blocks counter
    done

    # If remainder zero no partial block, else append character from array
    if [[ $PartBlock -gt 0 ]]; then
        Bar="$Bar${Arr[$PartBlock]}"
    fi

    while [[ "${#Bar}" -lt "$Len" ]]; do
        Bar="$Bar$Fill"         # Pad Progress Bar with fill character
    done

    echo Volume: "$1 $Bar"
    exit 0                      # Remove this line when copying into program
} # Main

Main "$@"

测试bash脚本

使用此脚本测试终端中的进度条。

#!/bin/bash

# test_progress_bar3

Main () {

    tput civis                              # Turn off cursor
    for ((i=0; i<=100; i++)); do
        CurrLevel=$(./progress_bar3 "$i")   # Generate progress bar 0 to 100
        echo -ne "$CurrLevel"\\r            # Reprint overtop same line
        sleep .04
    done
    echo -e \\n                             # Advance line to keep last progress
    echo "$0 Done"
    tput cnorm                              # Turn cursor back on
} # Main

Main "$@"

博士TL;

本节详细介绍如何使用notify-send将弹出气泡消息快速发送到桌面。这是必需的，因为音量级别可以在一秒钟内更改多次，并且默认的气泡消息行为是让消息在桌面上停留许多秒。

示例弹出气泡消息

弹出气泡消息bash代码

从上面的脚本中，主函数被复制到一个名为tvpowered的现有bash脚本中名为VolumeBar的新函数。已删除复制的主函数中的exit 0命令。

下面是如何调用它并让Ubuntu的notify-send命令知道我们将发送弹出泡泡消息:

VolumeBar $CurrVolume
# Ask Ubuntu: https://askubuntu.com/a/871207/307523
notify-send --urgency=critical "tvpowered" \
    -h string:x-canonical-private-synchronous:volume \
    --icon=/usr/share/icons/gnome/48x48/devices/audio-speakers.png \
    "Volume: $CurrVolume $Bar"

这是一个新的行，它告诉notify-send立即替换上一个弹出气泡:

-h string:x-canonical-private-synchronous:volume \

卷将弹出气泡消息分组在一起，该组中的新消息立即替换前一个消息。你可以用任何东西来代替体积。

这是它看起来的样子

上传文件

[##################################################] 100% (137921 / 137921 bytes)

等待一项工作完成

[#########################                         ] 50% (15 / 30 seconds)

实现它的简单函数

你可以复制粘贴到你的脚本。它不需要任何其他东西来工作。

PROGRESS_BAR_WIDTH=50  # progress bar length in characters

draw_progress_bar() {
  # Arguments: current value, max value, unit of measurement (optional)
  local __value=$1
  local __max=$2
  local __unit=${3:-""}  # if unit is not supplied, do not display it

  # Calculate percentage
  if (( $__max < 1 )); then __max=1; fi  # anti zero division protection
  local __percentage=$(( 100 - ($__max*100 - $__value*100) / $__max ))

  # Rescale the bar according to the progress bar width
  local __num_bar=$(( $__percentage * $PROGRESS_BAR_WIDTH / 100 ))

  # Draw progress bar
  printf "["
  for b in $(seq 1 $__num_bar); do printf "#"; done
  for s in $(seq 1 $(( $PROGRESS_BAR_WIDTH - $__num_bar ))); do printf " "; done
  printf "] $__percentage%% ($__value / $__max $__unit)\r"
}

使用的例子

在这里，我们上传一个文件，并在每次迭代时重新绘制进度条。只要我们能得到两个值:最大值和当前值，实际执行的作业是什么并不重要。

在下面的例子中，最大值是file_size，当前值由某个名为uploaded_bytes的函数提供。

# Uploading a file
file_size=137921

while true; do
  # Get current value of uploaded bytes
  uploaded_bytes=$(some_function_that_reports_progress)

  # Draw a progress bar
  draw_progress_bar $uploaded_bytes $file_size "bytes"

  # Check if we reached 100%
  if [ $uploaded_bytes == $file_size ]; then break; fi
  sleep 1  # Wait before redrawing
done
# Go to the newline at the end of upload
printf "\n"

这可以通过一种相当简单的方式来实现:

使用for循环从0迭代到100 每一步睡眠25毫秒(0.25秒) 在$bar变量后面附加另一个=号，使进度条变宽 返回进度条和百分比(\r清除行并返回行首;-ne使echo在结尾不添加换行符，并解析\r特殊字符)

function progress {
    bar=''
    for (( x=0; x <= 100; x++ )); do
        sleep 0.25
        bar="${bar}="
        echo -ne "$bar ${x}%\r"
    done
    echo -e "\n"
}

$ progress
> ========== 10% # here: after 2.5 seconds

$ progress
> ============================== 30% # here: after 7.5 seconds

彩色进度条

function progress {
    bar=''
    for (( x=0; x <= 100; x++ )); do
        sleep 0.05
        bar="${bar} "

        echo -ne "\r"
        echo -ne "\e[43m$bar\e[0m"

        local left="$(( 100 - $x ))"
        printf " %${left}s"
        echo -n "${x}%"
    done
    echo -e "\n"
}

要使进度条变得彩色，你可以使用格式化转义序列-这里进度条是黄色的:\e[43m，然后我们用\e[0m重置自定义设置，否则即使进度条完成了，它也会影响进一步的输入。