Bash 修改生成的Jenkins描述

我想远程更改Jenkins构建描述。我的脚本已经准备好了，除了一个小问题：多行描述

我正在使用Jenkins中的REST API和JSON下载旧的描述：

old_description=$(curl -s --user "$USER:$PASSWORD" --data-urlencode "tree=description" \
    "$jenkins_url/job/$job_name/$build_number/api/json")

old_description=${old_description#*:\"} #Remove JSON garbage
old_description=${old_description%\"\}} #Remove JSON garbage

if curl -u $USER:$PASSWORD   --data-urlencode "description=$new_description" \
    --data-urlencode "Submit=Submit" \
    "$jenkins_url/job/$job_name/$build_number/submitDescription"
then
    echo "Description successfully changed on Build #$build_number in Jenkins job $job_name"
else
    echo "WARNING: Description was not set. Manually change the descripiton of the build"
    echo "         for Build #$build_number in Jenkins job $job_name"
fi

“curl”命令将拉出：

<font color=blue><b>At first you don't succeed. Try again</b></font><br/>
\r\n<font color=gold><b>At first you don't succeed. Try again</b></font><br/>
\r\n<font color=green><b>At first you don't succeed. Try again</b></font>

这将

$old_description

更改为：

font color=blue><b>At first you don't succeed. Try again</b></font><br/>
<font color=gold><b>At first you don't succeed. Try again</b></font><br/>
<font color=green><b>At first you don't succeed. Try again</b></font>

如果我第一次准备或附加新的描述，我会在Jenkins中得到：

<font color=blue><b>At first you don't succeed. Try again</b></font><br/>
<font color=gold><b>At first you don't succeed. Try again</b></font><br/>
<font color=green><b>At first you don't succeed. Try again</b></font><br/>
<font color=red><b>My new description</b></font><br/>

一开始你没有成功。再试一次

起初你没有成功。再试一次

起初你没有成功。再试一次

我的新描述

看起来不错。下次，它就不起作用了。我明白了：

<font color=blue><b>At first you don't succeed. Try again</b></font><br/>\n<font color=gold><b>At first you don't succeed. Try again</b></font><br/>\n<font color=green><b>At first you don't succeed. Try again</b></font><br/>\n<font color=red><b>My new description</b></font><br/>
<font color=blue><b>My new new description</b></font>

一开始你没有成功。再试一次
\n首先，你没有成功。再试一次
\n首先，你没有成功。请重试
\n我的新描述

我的新描述

注意显示的

\n

如何解决此问题

---

我把整个程序都放进去了。

我已经玩了很长时间了

首先，不要这样做：

    new_description="$new_description<br/>
$old_description"

通过使用

printf

，我将

而不仅仅是

放在描述行分隔符中。这样，我就不会有一堆乱七八糟的

和

，也不再依赖于操作系统对换行符的定义

sed

命令花了我很长很长时间才弄明白。我尝试了各种各样的事情：

old_description=$(sed 's/\\r\\n/\r\n/g' <<<$old_description)

成功了！通常在sed中使用单引号来保护正则表达式不受插值的影响。但是，单引号也将

\r\n

作为

的插值终止。用双引号替换它们解决了这个问题

    new_description="$new_description<br/>
$old_description"

new_description="$(printf "$new_description\r\n$old_description")"

old_description=$(sed 's/\\r\\n/\r\n/g' <<<$old_description)

old_description=$(sed "s/\\r\\n/\r\n/g" <<<$old_description)