My solution displays the percentage of the tarball that is currently being uncompressed and written. I use this when writing out 2GB root filesystem images. You really need a progress bar for these things. What I do is use gzip --list to get the total uncompressed size of the tarball. From that I calculate the blocking-factor needed to divide the file into 100 parts. Finally, I print a checkpoint message for each block. For a 2GB file this gives about 10MB a block. If that is too big then you can divide the BLOCKING_FACTOR by 10 or 100, but then it's harder to print pretty output in terms of a percentage.

假设您正在使用Bash，那么您可以使用 shell函数

untar_progress () 
{ 
  TARBALL=$1
  BLOCKING_FACTOR=$(gzip --list ${TARBALL} |
    perl -MPOSIX -ane '$.==2 && print ceil $F[1]/50688')
  tar --blocking-factor=${BLOCKING_FACTOR} --checkpoint=1 \
    --checkpoint-action='ttyout=Wrote %u%  \r' -zxf ${TARBALL}
}

#!/bin/bash
tot=$(wc -c /proc/$$/fd/255 | awk '/ /{print $1}')
now() {
echo $(( 100* ($(awk '/^pos:/{print $2}' < /proc/$$/fdinfo/255)-166) / (tot-166) )) "%"
}
now;
now;
now;
now;
now;
now;
now;
now;
now;

输出:

0 %
12 %
25 %
37 %
50 %
62 %
75 %
87 %
100 %

注意:如果你输入1而不是255，你将在…2的标准输出(但您必须修改源代码，将“tot”设置为预计输出文件大小)

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'

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

许多答案描述了编写自己的命令来打印'\r' + $some_sort_of_progress_msg。有时问题是，每秒打印数百个这样的更新会减慢进程。

然而，如果你的任何进程产生输出(例如7z a -r newZipFile myFolder将输出每个文件名当它压缩它)，那么一个更简单，快速，无痛和可定制的解决方案存在。

安装python模块tqdm。

$ sudo pip install tqdm
$ # now have fun
$ 7z a -r -bd newZipFile myFolder | tqdm >> /dev/null
$ # if we know the expected total, we can have a bar!
$ 7z a -r -bd newZipFile myFolder | grep -o Compressing | tqdm --total $(find myFolder -type f | wc -l) >> /dev/null

帮助:tqdm -h。使用更多选项的示例:

$ find / -name '*.py' -exec cat \{} \; | tqdm --unit loc --unit_scale True | wc -l

作为奖励，您还可以使用tqdm在python代码中包装可迭代对象。

https://github.com/tqdm/tqdm/blob/master/README.rst#module