change file permission by gradle

Question

I create .jar file and move it to dir, but I don't understand how I can change permission for this file after.

task fatJar(type: Jar) {
    manifest {
        attributes 'Implementation-Title': 'Gradle Jar File Example',
                'Implementation-Version': version,
                'Main-Class':'com.asd.App',
                'Class-Path': 'com.asd'
    }
    baseName = project.name + '-all'
    from {
        configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
    }
    def file = file('/home/master/project/asd')
    fileMode = 755
    destinationDir = file
    with jar
}

Why not create the file with the correct mode in the first place? — Henry, Sep 09 '16 at 09:27
Your fileMode is wrong. 755 is octal (base 8) but fileMode wants an integer (base 10). Did you try setting fileMode=493? — Alessandro Caproni, May 11 '21 at 15:21
@Henry For me the mode defined in `jar {...}` is ignored. This can happen according to the docs: "It is dependent on the copy action implementation whether these permissions will actually be applied." — Joooeey, Oct 10 '22 at 10:11

score 11 · Answer 1 · answered Oct 26 '16 at 17:19

If you want to embed it in an existing custom task, you use can Project.exec(Action<? super ExecSpec> action).

task changePermission {
  doLast {
    project.exec {
      commandLine('chmod',  '+x', '<fileLocation>')
    }
  }
}

The project is available in most task implementations because it comes from AbstractTask.getProject().

score 7 · Accepted Answer · edited Oct 26 '16 at 16:53

Create an Exec Task to change file permission. Add this in your build.gradle file

task filepermission(type: Exec) {
    commandLine 'chmod', '700', '<file_path>'
}

Run this using a doLast block. Your final build.gradle will look like this:

task filepermission(type: Exec) {
    commandLine 'chmod', '700', '<file_path>'
}

task fatJar(type: Jar) {
    manifest {
        attributes 'Implementation-Title': 'Gradle Jar File Example',
                'Implementation-Version': version,
                'Main-Class':'com.asd.App',
                'Class-Path': 'com.asd'
    }
    baseName = project.name + '-all'
    from {
        configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
    }
    def file = file('/home/master/project/asd')
    fileMode = 755
    destinationDir = file
    with jar
    doLast {
        filepermission.execute()
    }
}

now running gradle fatJar should change the file permission. Make sure you set proper path in the filePermission task

He wants to create the jar seomewhere then move to dir changing its permissions. I would use one task to create the jar, then a copy task (depending on the one that created the jar) to copy the jar in the dir and sets the proper pemissions by setting fileMode properly. As I wrote above 755 is wrong and should be replaced by the int (base 10) 493. — Alessandro Caproni, May 11 '21 at 15:23

score 6 · Answer 3 · answered Jan 29 '19 at 07:53

Most of the solutions above are unnecessarily convolurted. Posting this so I can find it next time I look for it:

distributions {
    main {
        contents {
            from fileTree('src/main/scripts'), {
                filesMatching('myscript') { mode = 0744 }
            }
        }
    }
}

score 2 · Answer 4 · answered Feb 13 '21 at 23:52

Looking at the solutions here, they are only catering to unix-esque operating systems like Linux and MacOS. For Windows, the Exec task within a gradle.kts file would look thus:

tasks {
    register<Exec>("makeFileExecutable") {
        workingDir(rootDir)
        commandLine("cmd", "755", "path/to/folderorfile")
    }
}

This is what worked for me.

change file permission by gradle

4 Answers4

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