如果你必须显示一个临时进度条(通过提前知道显示时间)，你可以像下面这样使用Python:

#!/bin/python
from time import sleep
import sys

if len(sys.argv) != 3:
    print "Usage:", sys.argv[0], "<total_time>", "<progressbar_size>"
    exit()

TOTTIME=float(sys.argv[1])
BARSIZE=float(sys.argv[2])

PERCRATE=100.0/TOTTIME
BARRATE=BARSIZE/TOTTIME

for i in range(int(TOTTIME)+1):
    sys.stdout.write('\r')
    s = "[%-"+str(int(BARSIZE))+"s] %d%% "
    sys.stdout.write(s % ('='*int(BARRATE*i), int(PERCRATE*i)))
    sys.stdout.flush()
    SLEEPTIME = 1.0
    if i == int(TOTTIME): SLEEPTIME = 0.1
    sleep(SLEEPTIME)
print ""

然后，假设您将Python脚本保存为progressbar.py，可以通过运行以下命令从您的bash脚本中显示进度条:

python progressbar.py 10 50

它将显示一个50个字符大小的进度条，并“运行”10秒。

我以“恐惧之边”提供的答案为基础

它连接到Oracle数据库以检索RMAN恢复的进度。

#!/bin/bash

 # 1. Create ProgressBar function
 # 1.1 Input is currentState($1) and totalState($2)
 function ProgressBar {
 # Process data
let _progress=(${1}*100/${2}*100)/100
let _done=(${_progress}*4)/10
let _left=40-$_done
# Build progressbar string lengths
_fill=$(printf "%${_done}s")
_empty=$(printf "%${_left}s")

# 1.2 Build progressbar strings and print the ProgressBar line
# 1.2.1 Output example:
# 1.2.1.1 Progress : [########################################] 100%
printf "\rProgress : [${_fill// /#}${_empty// /-}] ${_progress}%%"

}

function rman_check {
sqlplus -s / as sysdba <<EOF
set heading off
set feedback off
select
round((sofar/totalwork) * 100,0) pct_done
from
v\$session_longops
where
totalwork > sofar
AND
opname NOT LIKE '%aggregate%'
AND
opname like 'RMAN%';
exit
EOF
}

# Variables
_start=1

# This accounts as the "totalState" variable for the ProgressBar function
_end=100

_rman_progress=$(rman_check)
#echo ${_rman_progress}

# Proof of concept
#for number in $(seq ${_start} ${_end})

while [ ${_rman_progress} -lt 100 ]
do

for number in _rman_progress
do
sleep 10
ProgressBar ${number} ${_end}
done

_rman_progress=$(rman_check)

done
printf '\nFinished!\n'

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。

在我的系统上使用pipeview (pv)实用程序的一个更简单的方法。

srcdir=$1
outfile=$2


tar -Ocf - $srcdir | pv -i 1 -w 50 -berps `du -bs $srcdir | awk '{print $1}'` | 7za a -si $outfile

你可能也对如何做一个旋转器感兴趣:

我能在Bash中做旋转吗?

Sure! i=1 sp="/-\|" echo -n ' ' while true do printf "\b${sp:i++%${#sp}:1}" done Each time the loop iterates, it displays the next character in the sp string, wrapping around as it reaches the end. (i is the position of the current character to display and ${#sp} is the length of the sp string). The \b string is replaced by a 'backspace' character. Alternatively, you could play with \r to go back to the beginning of the line. If you want it to slow down, put a sleep command inside the loop (after the printf). A POSIX equivalent would be: sp='/-\|' printf ' ' while true; do printf '\b%.1s' "$sp" sp=${sp#?}${sp%???} done If you already have a loop which does a lot of work, you can call the following function at the beginning of each iteration to update the spinner: sp="/-\|" sc=0 spin() { printf "\b${sp:sc++:1}" ((sc==${#sp})) && sc=0 } endspin() { printf "\r%s\n" "$@" } until work_done; do spin some_work ... done endspin

#!/bin/bash

function progress_bar() {
    bar=""
    total=10
    [[ -z $1 ]] && input=0 || input=${1}
    x="##"
   for i in `seq 1 10`; do
        if [ $i -le $input ] ;then
            bar=$bar$x
        else
            bar="$bar  "
       fi
    done
    #pct=$((200*$input/$total % 2 + 100*$input/$total))
    pct=$(($input*10))
    echo -ne "Progress : [ ${bar} ] (${pct}%) \r"    
    sleep 1
    if [ $input -eq 10 ] ;then
        echo -ne '\n'
    fi

}

可以创建一个函数，以1-10的比例绘制bar数:

progress_bar 1
echo "doing something ..."
progress_bar 2
echo "doing something ..."
progress_bar 3
echo "doing something ..."
progress_bar 8
echo "doing something ..."
progress_bar 10