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%)

有一次，我也有一个繁忙的脚本，它被占用了几个小时，没有任何进展。所以我实现了一个函数，主要包括前面的回答技巧:

#!/bin/bash
# Updates the progress bar
# Parameters: 1. Percentage value
update_progress_bar()
{
  if [ $# -eq 1 ];
  then
    if [[ $1 == [0-9]* ]];
    then
      if [ $1 -ge 0 ];
      then
        if [ $1 -le 100 ];
        then
          local val=$1
          local max=100

          echo -n "["

          for j in $(seq $max);
          do
            if [ $j -lt $val ];
            then
              echo -n "="
            else
              if [ $j -eq $max ];
              then
                echo -n "]"
              else
                echo -n "."
              fi
            fi
          done

          echo -ne " "$val"%\r"

          if [ $val -eq $max ];
          then
            echo ""
          fi
        fi
      fi
    fi
  fi
}

update_progress_bar 0
# Further (time intensive) actions and progress bar updates
update_progress_bar 100

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

关于这个主题有很多不同的答案，但是当计算文本文件操作的百分比时，使用当前长度/总大小的方式，例如显示ver_big_file的百分比。我建议使用awk来实现这个目的，如下所示:

awk '
    function bar(x){s="";i=0;while (i++ < x) s=s "#";return s}
    BEGIN{
        ("ls -l " ARGV[1]) | getline total;
        split(total,array);
        total=array[5];
    }
    {
        cur+=length($0)+1;
        percent=int(cur / total * 100);
        printf "LINE %s:%s %s%%\r", NR, bar(percent*.8), percent 
    }
    END {print}' very_big_file.json | grep "keyword" | ...

这种方法非常精确，基于流，但只适用于文本文件。

https://github.com/extensionsapp/progre.sh

创造40%的进度:progress 40

前几天我写了一个简单的进度条函数:

#!/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}%%"

}

# Variables
_start=1

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

# Proof of concept
for number in $(seq ${_start} ${_end})
do
    sleep 0.1
    ProgressBar ${number} ${_end}
done
printf '\nFinished!\n'

或者从， https://github.com/fearside/ProgressBar/