Bash脚本构建正确的$ cmd，但无法执行复杂的流 [英] Bash script builds correct $cmd but fails to execute complex stream

问题描述

这个简短的脚本每天都会抓取一些日志文件以创建一个简单的摘录。它可以从命令行运行，当我回显$ cmd并复制/粘贴时，它也可以运行。但是当我尝试从脚本本身执行时，它将中断。

This short script scrapes some log files daily to create a simple extract. It works from the command line and when I echo the $cmd and copy/paste, it also works. But it will breaks when I try to execute from the script itself.

我知道这是我可以改善的噩梦，但是我缺少一些简单的方法吗？只需正确执行此操作即可？

I know this is a nightmare of patterns that I could probably improve, but am I missing something simple to just execute this correctly?

#!/bin/bash
priorday=$(date --date yesterday +"%Y-%m-%d")
outputfile="/home/CCHCS/da14/$priorday""_PROD_message_processing_times.txt"
cmd="grep 'Processed inbound' /home/rules/care/logs/RootLog* | cut -f5,6,12,16,18 -d\" \" | grep '^"$priorday"' | sed 's/\,/\./' | sed 's/ /\t/g' | sed -r 's/([0-9]+\-[0-9]+\-[0-9]+)\t/\1 /' | sed 's/  / /g' | sort >$outputfile"
printf "command to execute:\n"
echo $cmd
printf "\n"
$cmd

输出：

./ make_log_extract.sh命令执行：grep'处理入站'/home/rules/care/logs/RootLog.log / home / rules / care / logs / RootLog.log.1
/home/rules/care/logs/RootLog.log.10
/home/rules/care/logs/RootLog.log.11
/home/rules/care/logs/RootLog.log.12
/ home / rules / care / logs / RootLog。 .log.2
/home/rules/care/logs/RootLog.log.3
/home/rules/care/logs/RootLog.log.4
/ home / rules / care /logs/RootLog.log.5
/home/rules/care/logs/RootLog.log.6
/home/rules/care/logs/RootLog.log.7
/ home /rules/care/logs/RootLog.log.8
/home/rules/care/logs/RootLog.log.9 |切-f5,6,12,16,18 -d | grep
‘^ 2014-01-30’| s’s / \，/。/’| sed s / / \t / g'| sed -r
’s /（[[0-9] +-[0-9] +-[0-9] +）\t / \1 /’| sed s / / / g |排序
/home/CCHCS/da14/2014-01-30_PROD_message_processing_times.txt

./make_log_extract.sh command to execute: grep 'Processed inbound' /home/rules/care/logs/RootLog.log /home/rules/care/logs/RootLog.log.1 /home/rules/care/logs/RootLog.log.10 /home/rules/care/logs/RootLog.log.11 /home/rules/care/logs/RootLog.log.12 /home/rules/care/logs/RootLog.log.2 /home/rules/care/logs/RootLog.log.3 /home/rules/care/logs/RootLog.log.4 /home/rules/care/logs/RootLog.log.5 /home/rules/care/logs/RootLog.log.6 /home/rules/care/logs/RootLog.log.7 /home/rules/care/logs/RootLog.log.8 /home/rules/care/logs/RootLog.log.9 | cut -f5,6,12,16,18 -d" " | grep '^2014-01-30' | sed 's/\,/./' | sed 's/ /\t/g' | sed -r 's/([0-9]+-[0-9]+-[0-9]+)\t/\1 /' | sed 's/ / /g' | sort /home/CCHCS/da14/2014-01-30_PROD_message_processing_times.txt

grep：5,6,12， 16,18：没有这样的文件或目录

grep: 5,6,12,16,18: No such file or directory

推荐答案

为grebneke注释，请勿存储该命令然后执行

As grebneke comments, do not store the command and then execute it.

您可以执行的操作是先打印它： Bash：在执行前打印每个命令吗？

What you can do is to execute it but firstly print it: Bash: Print each command before executing?

priorday=$(date --date yesterday +"%Y-%m-%d")
outputfile="/home/CCHCS/da14/$priorday""_PROD_message_processing_times.txt"

set -o xtrace # <-- set printing mode "on"
grep 'Processed inbound' /home/rules/care/logs/RootLog* | cut -f5,6,12,16,18 -d\" \" | grep '^"$priorday"' | sed 's/\,/\./' | sed 's/ /\t/g' | sed -r 's/([0-9]+\-[0-9]+\-[0-9]+)\t/\1 /' | sed 's/  / /g' | sort >$outputfile"
set +o xtrace # <-- revert to normal

这篇关于Bash脚本构建正确的$ cmd，但无法执行复杂的流的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！