cap_iab_set_proc - Linux


cap_iab_set_proc is a tool used to set the capabilities of a given process. It allows users to modify the capabilities of a running process, enabling or disabling specific privileges as needed. This command is particularly useful in security contexts and for managing the privileges of untrusted processes.


cap_iab_set_proc [options] <pid> <cap_set> <cap_value>


  • -h, --help: Display help information.
  • -V, --version: Display version information.
  • -n, --numeric: Display capabilities as numeric values instead of names.
  • -e, --effective: Set the effective capabilities. (Default)
  • -p, --permitted: Set the permitted capabilities.
  • -i, --inheritable: Set the inheritable capabilities.


Enable the CAP_SYS_ADMIN capability for process with PID 1234:

cap_iab_set_proc -e 1234 CAP_SYS_ADMIN 1

Disable the CAP_NET_BIND_SERVICE capability for process with PID 5678:

cap_iab_set_proc -p 5678 CAP_NET_BIND_SERVICE 0

Show all set capabilities for process with PID 3456:

cap_iab_set_proc -n -e -p -i 3456

Common Issues

A common issue is using an invalid capability name or value. Check the correct names and values for the specific capability you want to modify.


cap_iab_set_proc can be used in conjunction with other tools such as lsof to identify processes and their capabilities. It can also be integrated into scripts or custom security policies to automate capability management.

Related Commands

  • cap_get_proc: Retrieve process capabilities.
  • capsh: Set process capabilities using a shell.
  • su: Execute a command with a different user identity and capabilities.