Question

我有一个python脚本，用于从服务器收集数据。我可以把它当作：

./ApiStreamingClient.py -w flow-index -n admin -p admin localhost 1477389500000000000 1477389900000000000 | gzip - > out.gz

其中1477389500000000000和1477389900000000000是定义间隔的纳秒时间。

由于服务很慢，我需要编写一个在子区间中运行相同代码的bash脚本。

这是我目前的尝试，但编译时出现了一些错误：

#!/bin/bash

file_name=$1
data_type=$2
username=$3
password=$4
address=$5
start_time=$6
end_time=$7

set batch_size = 1000000000
set batch_start = start_time
set batch_end = current_time + batch_size

while (("$batch_end" < "$end_time"))

do

  echo "iteration $i batch_start=$batch_start batch_end=$batch_end"
  ./$file_name -w flow-index -n $username -p $password $address $batch_start $batch_end | gzip > "out
  set /a batch_start = batch_end + 1
  set /a batch_end = batch_start + batch_size
done
~

我认为错误在于如何定义while循环以及如何更新batch_start和batch_end变量。

你能解释一下这段代码有什么问题吗？我的知识o bash接近0，我想有脚本的工作版本和问题的解释。

Thansk！

编辑：我仍然会遇到错误：

#!/bin/bash

file_name=$1
data_type=$2
username=$3
password=$4
address=$5
start_time=$6
end_time=$7

batch_size = 1000000000
batch_start = $start_time
batch_end = $((current_time + batch_size))


while (("$batch_end" < "$end_time$))
do

  echo "iteration $i batch_start=$batch_start batch_end=$batch_end"
  ./$file_name -w flow-index -n $username -p $password $address $batch_start $batch_end | gzip > "out_$i.gz"
  batch_start =$((batch_end + 1))
  batch_end =$((batch_start + batch_size))
done
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probe27:/data/misc # 
probe27:/data/misc # 
probe27:/data/misc # 
probe27:/data/misc # 
probe27:/data/misc # sh GetStreamingFlowData.sh ApiStreamingClient.py -w flow-index -n admin -p admin localhost 1477389500000000000 1477389900000000000
GetStreamingFlowData.sh: line 11: batch_size: command not found
GetStreamingFlowData.sh: line 12: batch_start: command not found
GetStreamingFlowData.sh: line 13: batch_end: command not found
GetStreamingFlowData.sh: line 20: unexpected EOF while looking for matching `"'
GetStreamingFlowData.sh: line 24: syntax error: unexpected end of file
probe27:/data/misc #

Answer 1

这是seq的作业：

start=1477389500000000000
end=1477389900000000000
step=1000000000

for current_step in $(seq $start $step $end); do
    echo $current_step
done

Answer 2

您具有将值赋值给错误的语法。您正在编写 bash 脚本，而不是DOS batch 文件。

#!/bin/bash

file_name=$1
data_type=$2
username=$3
password=$4
address=$5
start_time=$6
end_time=$7

batch_size=1000000000
batch_start=$start_time
batch_end=$((current_time + batch_size))

while (("$batch_end" < "$end_time"))

do

  echo "iteration $i batch_start=$batch_start batch_end=$batch_end"
  ./$file_name -w flow-index -n "$username" -p "$password" "$address" "$batch_start" "$batch_end" | gzip -c > out
  batch_start=$((batch_end + 1))
  batch_end=$((batch_start + batch_size))
done

批量拆分时间间隔

2 个答案: