How to give permission 700 and 770 to file & folder using java

Question

I want to give the chmod 700 permission to a file using java.

Code I used

Set<PosixFilePermission> perms = new HashSet<PosixFilePermission>();
    perms.add(PosixFilePermission.OWNER_READ);
    perms.add(PosixFilePermission.OWNER_WRITE);
    perms.add(PosixFilePermission.OWNER_EXECUTE);
    //add group permissions
    perms.add(PosixFilePermission.GROUP_READ);
    perms.add(PosixFilePermission.GROUP_WRITE);
    perms.add(PosixFilePermission.GROUP_EXECUTE);

Path FilePathObject = Paths.get(fileDir.toString(),"fileRun.sh");
Files.setPosixFilePermissions(FilePathObject, perms);

But it is not setting permission correctly -

drwxrwsr-x   4 user group       94 Aug 12 05:45 scriptconfig

I tried this code as well to set the 700 permission -

    txtFilePath.toFile().setExecutable(false,true);
    txtFilePath.toFile().setReadable(false, true);
    txtFilePath.toFile().setWritable(false,true);

But this is also not working as per the expectation. Do we have any thing through which we can set these permissions.

A dirty way is this one: `Runtime.getRuntime().exec("chmod 770 ");` — MrT, Aug 12 '15 at 10:55
You can execute commands from within java like below Process p = Runtime.getRuntime().exec("unix command"); — , Aug 12 '15 at 11:07
The code under "Code I used" will definitely not work, because you did not even specify the file path in that code. — Tagir Valeev, Aug 17 '15 at 06:44

score 1 · Answer 1 · edited May 23 '17 at 11:52

1

Simply try

txtFilePath.toFile().setExecutable(true);
txtFilePath.toFile().setReadable(true);
txtFilePath.toFile().setWritable(true);

else you can check below

How do i programmatically change file permissions?

edited May 23 '17 at 11:52

Community

1
1

answered Aug 12 '15 at 10:59

Vivek Gupta

955
4
7

This only affects the user permissions, not group or other. – Ethan Shepherd Apr 15 '22 at 18:47

Java_Alert · Accepted Answer · 2015-08-17T06:49:53.110

This code Will be working, if you want to give 770 permission to a file -

Set<PosixFilePermission> perms = new HashSet<PosixFilePermission>();
perms.add(PosixFilePermission.OWNER_READ);
perms.add(PosixFilePermission.OWNER_WRITE);
perms.add(PosixFilePermission.OWNER_EXECUTE);
//add group permissions
perms.add(PosixFilePermission.GROUP_READ);
perms.add(PosixFilePermission.GROUP_WRITE);
perms.add(PosixFilePermission.GROUP_EXECUTE);

Path FilePathObject = Paths.get(fileDir.toString(),"fileRun.sh");
Files.setPosixFilePermissions(FilePathObject, perms);

Note : You have to create the directory before executing given command then only it will work otherwise directory will be created with default permissions.

First create the directory then you can use

PosixFilePermission API introduced in Java 1.7.

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How to give permission 700 and 770 to file & folder using java

2 Answers2