There's also suid/sgid permissions. Normally, when you execute a program, it will run as the user which called it. suid will instead run the program as the owner of the file. For example, if you are logged in as user developer and try to execute a suid program owned by root, it will execute as root instead of developer.
Been using UNIX since the late 80s; Linux since the mid-90s; virtualization since the early 2000s and spent the past few years working in the cloud space.
Location
Alexandria, VA, USA
Education
B.S. Psychology from Pennsylvania State University
The extension to suid-/sgid-enabled operations being that, when you run auditing services on a system, actions are logged both by actual executing-user and effective executing user.
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There's also suid/sgid permissions. Normally, when you execute a program, it will run as the user which called it. suid will instead run the program as the owner of the file. For example, if you are logged in as user
developerand try to execute a suid program owned byroot, it will execute asrootinstead ofdeveloper.su,sudo,passwdrely on suid to work.The extension to suid-/sgid-enabled operations being that, when you run auditing services on a system, actions are logged both by actual executing-user and effective executing user.