Su failed to execute bin bash operation not permitted, The command sudo works fine but when I try to su, it says "cannot execute bin/bash/**** (my user name) not a directory". SUDO rule is in place to allow user to run ALL commands user1 ALL= (ALL) NOPASSWD: ALL However, the user is not. Syntax: sudo chmod [permissions] [filename] Selinux is preventing an account to run /bin/su. Jun 15, 2021 · Last login: Tue Jun 15 10:21:52 -03 2021 on pts/1 su: failed to execute /bin/bash: Permission denied I've already checked files and directory permissions. SELinux is disabled and no new log entries are generated in /var/log/secure or /var/log/messages when root tries to run /bin/su, which has appropriate permissions, file size, and md5sum. Permission denied when running any SUDO commands despite ALL commands are permitted. If disable selinux it works. Getting error as failed to execute /bin/bash : Permission denied for ssh and su commands. Apr 2, 2022 · su: failed to execute /bin/bash: Permission denied # for a more typical shell Upon examining both the permissions and file access control lists for /bin/bash, located in /usr/bin/bash, they seem to allow the user backups to read and execute both shells. Sep 22, 2025 · Resolve "Permission Denied" errors in bash scripts. 6 I installed Kali Linux on a VM machine and I cannot change my user to root from the terminal using su. What must change to allow this? [root@localhost ~]$ su - -bash: /bin/su: Permission denied Mar 19, 2023 · The best way to fix the “/bin/bash bad interpreter: Operation not permitted” error is to ensure that the interpreter has the appropriate permissions to execute the script or program. Nov 14, 2025 · The first step in resolving the "Operation not permitted" error is to check the file permissions. Jul 23, 2025 · When we encounter the "chmod: Operation not permitted" error, it typically means you do not have the required permissions to change the file or directory's attributes. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. Using sudo allows you to execute commands with superuser privileges, thereby granting you the necessary permissions to modify the file. Learn to modify permissions, change ownership, and set the correct shell for execution. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered. You can use the ls -l command to view the permissions of a file or directory. After updating the system, no one (including root) can use su without getting bash: /bin/su: Permission denied errors, but ssh and terminal logins work as normal.
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