如何将 grep 和 tr 与管道一起用作 Jenkinsfile 中的 bash 命令？

Question

im using a grep command with tr to access a version from a file which in my current directory. The grep command works but not in the context of the Jenkinsfile as a variable.

I have this:

            grepVersion='${grep -we "^version:" myconfig.yaml | tr -d "version:[:blank:]"}'         

I want this:

myPath='something_"${grepVersion}"'

as this:

    echo "{$myPath}"
output: something_0.0.2

If tried a lot, would be great if someone could help me with this.

my Jenkinsfile looks something like this:

pipeline {
    stages {
        stage('Build') {
            steps {
                script {
                    
                    echo "build something"
                }
            }
            
        }
        
        stage('Deploy'){
            steps{
                script {
                    
                    #grep version from file 

                    grepVersion='${grep -we "^version:" myconfig.yaml | tr -d "version:[:blank:]"}'                 
        
                    #access archivePath 
                    archivePath="${WORKSPACE}/archives/${env.JOB_NAME}_"${grepVersion}".mtar"
                    
                    #deploy something with arhivePath
                    sh 'XX deploy "${archivePath}" -f'
                }
            }
        }
    }
}

This command works and accesses the correct version:

grep -we "^version:" myconfig.yaml |tr -d "version:[:blank:]"

I have the following file in my path where I want to access version: 0.0.2 as 0.0.2 to concatenate this to my archivePath variable.

ID
Name
version: 0.0.2



different_version: 0.0.2
    
    
different_version: 0.0.3

The following command works on bash shell and can acces the correct version: 0.0.2

grep -we "^version:" myconfig.yaml |tr -d "version:[:blank:]"

But it won't work with the Jenkins fileand and groovy context. If have tried the following commands to access 0.0.2 to use it as a bash variable :

Here the "^" makes a problem:

grepVersion=${grep -we "^version:" myconfig.yaml |tr -d "version:[:blank:]"}

Here the commands wont resolve because of the double quotes:

grepVersion="${grep -we '^version:' myconfig.yaml |tr -d 'version:[:blank:]'"'

...

grepVersion='$(grep -we '^version:' myconfig.yaml |tr -d 'version:[:blank:]')"

and so on haven' found a solution yet.

Thanks for your help already.

Answer 1

thanks a lot, you both were right!

The following command works for me:

grepVersion=sh 'sed -n s/^version:[[:blank:]]*//p mta.yaml'