我想根据命令输出的行数和之前运行的目标行数来跟踪进度:

#!/bin/bash
function lines {
  local file=$1
  local default=$2
  if [[ -f $file ]]; then
    wc -l $file | awk '{print $1}';
  else
    echo $default
  fi
}

function bar {
  local items=$1
  local total=$2
  local size=$3
  percent=$(($items*$size/$total % $size))
  left=$(($size-$percent))
  chars=$(local s=$(printf "%${percent}s"); echo "${s// /=}")
  echo -ne "[$chars>";
  printf "%${left}s"
  echo -ne ']\r'
}

function clearbar {
  local size=$1
  printf " %${size}s  "
  echo -ne "\r"
}

function progress {
  local pid=$1
  local total=$2
  local file=$3

  bar 0 100 50
  while [[ "$(ps a | awk '{print $1}' | grep $pid)" ]]; do
    bar $(lines $file 0) $total 50
    sleep 1
  done
  clearbar 50
  wait $pid
  return $?
}

然后这样使用它:

target=$(lines build.log 1000)
(mvn clean install > build.log 2>&1) &
progress $! $target build.log

它输出一个进度条，看起来像这样:

[===============================================>   ]

条形图随着输出行数达到目标而增长。如果行数超过了目标，条就重新开始(希望目标是好的)。

BTW:我在Mac OSX上使用bash。我基于这个代码从mariascio旋转。

根据上面列出的建议，我决定实现自己的进度条。

#!/usr/bin/env bash

main() {
  for (( i = 0; i <= 100; i=$i + 1)); do
    progress_bar "$i"
    sleep 0.1;
  done
  progress_bar "done"
  exit 0
}

progress_bar() {
  if [ "$1" == "done" ]; then
    spinner="X"
    percent_done="100"
    progress_message="Done!"
    new_line="\n"
  else
    spinner='/-\|'
    percent_done="${1:-0}"
    progress_message="$percent_done %"
  fi

  percent_none="$(( 100 - $percent_done ))"
  [ "$percent_done" -gt 0 ] && local done_bar="$(printf '#%.0s' $(seq -s ' ' 1 $percent_done))"
  [ "$percent_none" -gt 0 ] && local none_bar="$(printf '~%.0s' $(seq -s ' ' 1 $percent_none))"

  # print the progress bar to the screen
  printf "\r Progress: [%s%s] %s %s${new_line}" \
    "$done_bar" \
    "$none_bar" \
    "${spinner:x++%${#spinner}:1}" \
    "$progress_message"
}

main "$@"

这是一个由nExace编写的bash脚本的迷幻进度条。它可以从命令行调用为'。/progressbar x y'，其中'x'是以秒为单位的时间，'y'是与该进度部分相关的消息。

如果你想让脚本的其他部分来控制进度条，内部的progressbar()函数本身也可以独立使用。例如，发送'progressbar 10 "正在创建目录树";'将显示:

[#######                                     ] (10%) Creating directory tree

当然，它会很迷幻……

#!/bin/bash

if [ "$#" -eq 0 ]; then echo "x is \"time in seconds\" and z is \"message\""; echo "Usage: progressbar x z"; exit; fi
progressbar() {
        local loca=$1; local loca2=$2;
        declare -a bgcolors; declare -a fgcolors;
        for i in {40..46} {100..106}; do
                bgcolors+=("$i")
        done
        for i in {30..36} {90..96}; do
                fgcolors+=("$i")
        done
        local u=$(( 50 - loca ));
        local y; local t;
        local z; z=$(printf '%*s' "$u");
        local w=$(( loca * 2 ));
        local bouncer=".oO°Oo.";
        for ((i=0;i<loca;i++)); do
                t="${bouncer:((i%${#bouncer})):1}"
                bgcolor="\\E[${bgcolors[RANDOM % 14]}m \\033[m"
                y+="$bgcolor";
        done
        fgcolor="\\E[${fgcolors[RANDOM % 14]}m"
        echo -ne " $fgcolor$t$y$z$fgcolor$t \\E[96m(\\E[36m$w%\\E[96m)\\E[92m $fgcolor$loca2\\033[m\r"
};
timeprogress() {
        local loca="$1"; local loca2="$2";
        loca=$(bc -l <<< scale=2\;"$loca/50")
        for i in {1..50}; do
                progressbar "$i" "$loca2";
                sleep "$loca";
        done
        printf "\n"
};
timeprogress "$1" "$2"

这只适用于使用地精天顶。Zenity为bash脚本提供了一个很棒的本机界面: https://help.gnome.org/users/zenity/stable/

来自Zenity进度条示例:

#!/bin/sh
(
echo "10" ; sleep 1
echo "# Updating mail logs" ; sleep 1
echo "20" ; sleep 1
echo "# Resetting cron jobs" ; sleep 1
echo "50" ; sleep 1
echo "This line will just be ignored" ; sleep 1
echo "75" ; sleep 1
echo "# Rebooting system" ; sleep 1
echo "100" ; sleep 1
) |
zenity --progress \
  --title="Update System Logs" \
  --text="Scanning mail logs..." \
  --percentage=0

if [ "$?" = -1 ] ; then
        zenity --error \
          --text="Update canceled."
fi

我需要一个进度条来迭代csv文件中的行。能够将cprn的代码改编成对我有用的东西:

BAR='##############################'
FILL='------------------------------'
totalLines=$(wc -l $file | awk '{print $1}')  # num. lines in file
barLen=30

# --- iterate over lines in csv file ---
count=0
while IFS=, read -r _ col1 col2 col3; do
    # update progress bar
    count=$(($count + 1))
    percent=$((($count * 100 / $totalLines * 100) / 100))
    i=$(($percent * $barLen / 100))
    echo -ne "\r[${BAR:0:$i}${FILL:$i:barLen}] $count/$totalLines ($percent%)"

    # other stuff
    (...)
done <$file

看起来是这样的:

[##----------------------------] 17128/218210 (7%)

我今天有同样的事情要做，根据Diomidis的答案，下面是我是如何做到的(linux debian 6.0.7)。 也许，这可以帮助你:

#!/bin/bash

echo "getting script inode"
inode=`ls -i ./script.sh | cut -d" " -f1`
echo $inode

echo "getting the script size"
size=`cat script.sh | wc -c`
echo $size

echo "executing script"
./script.sh &
pid=$!
echo "child pid = $pid"

while true; do
        let offset=`lsof -o0 -o -p $pid | grep $inode | awk -F" " '{print $7}' | cut -d"t" -f 2`
        let percent=100*$offset/$size
        echo -ne " $percent %\r"
done