在詹金斯管道中使用嵌套命令替換sh步驟

Question

在嘗試使用相關內部文件夾的符號鏈接進行歸檔之前，我試圖展平結果目錄，該鏈接首先遍歷一堆在運行時確定的變量路徑名。 我從SO 答案中選擇的命令替換方法似乎不太正確。

問題：對於我不知道的Jenkins管道步驟，如何正確地逃避命令替換鏈有規則嗎？

管道腳本片段

post {
  always {   
    sh """
    echo 'Link to inner output result folder to make the artifacts more shallow'
    echo ln -sf dirname find $output_dir -name $jUnitResult $WORKSPACE/$output_dir_inner
    ln -sf $(dirname $(find ${output_dir} -name ${jUnitResult})) $WORKSPACE/$output_dir_inner
    """

    archiveArtifacts output_dir_inner
  }
}

控制台輸出

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 52: illegal string body character after dollar sign;
   solution: either escape a literal dollar sign "\$5" or bracket the value expression "${5}" @ line 52, column 21.
               ln -sf $(dirname $(find ${output_dir} -name ${jUnitResult})) $WORKSPACE/$output_dir_inner
                       ^

1 error

    at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
    at org.codehaus.groovy.control.ErrorCollector.addFatalError(ErrorCollector.java:150)
    at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:120)
    at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:132)
    at org.codehaus.groovy.control.SourceUnit.addError(SourceUnit.java:350)
    at org.codehaus.groovy.antlr.AntlrParserPlugin.transformCSTIntoAST(AntlrParserPlugin.java:139)
    at org.codehaus.groovy.antlr.AntlrParserPlugin.parseCST(AntlrParserPlugin.java:110)
    at org.codehaus.groovy.control.SourceUnit.parse(SourceUnit.java:234)
    at org.codehaus.groovy.control.CompilationUnit$1.call(CompilationUnit.java:168)
    at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:943)
    at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:605)
    at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
    at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
    at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
    at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
    at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
    at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:131)
    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:125)
    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:560)
    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:521)
    at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:330)
    at hudson.model.ResourceController.execute(ResourceController.java:97)
    at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE

我在嘗試時看到類似的失敗

管道腳本片段

ln -sf $(dirname $(find $output_dir -name $jUnitResult)) $WORKSPACE/$output_dir_inner

控制台輸出

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 49: illegal string body character after dollar sign;
   solution: either escape a literal dollar sign "\$5" or bracket the value expression "${5}" @ line 49, column 13.
               sh """
               ^

Answer 1

解決這個問題的幾個有趣策略

將長sh腳本分解為具有返回值的不同功能塊

https://stackoverflow.com/a/47394132/1330381

使用反斜杠\\$轉義嵌套的shell命令，

sh """
    \$(echo TEST this subshell \$(ls .))
"""

https://stackoverflow.com/a/50356318/1330381