See also: Identity Authentication - verifying the identity of the originator of a connection (passwords, radius, identd, crypto methods, et al.)

See also: Kerberos related at Data integrity and Security, Checksums and Digests - cryptography, message digests, etc.

Up to Execution

Up to Process Limits Permission and access restriction (files, resources, etc)

Process Limits: File Access - Process Limits on File access (permissions, ownership, modes, et al)

Process Limits: Resources - Process Limits on resource usage (disk, CPU, memory, et al)

Why do setuid perl scripts complain about kernel problems?

See Also

(PERL predefined variable) $REAL_USER_ID The real uid of this process.

(PERL predefined variable) $EFFECTIVE_USER_ID The effective uid of this process.

(PERL predefined variable) $REAL_GROUP_ID The real gid of this process.

(PERL predefined variable) $EFFECTIVE_GROUP_ID The effective gid of this process. If you are on a machine that supports membership in multiple groups simultaneously, gives a space separated list of groups you are in.

(Perl builtin function) getlogin Returns the current login from /etc/utmp, if any.

(Perl builtin function) getpgrp PID Returns the current process group for the specified PID.

(Perl builtin function) getpwnam NAME perform the same function as the counterpart in the system library.

(Perl builtin function) getgrnam NAME perform the same function as the counterpart in the system library.

(Perl builtin function) getpwuid UID perform the same function as the counterpart in the system library.

(Perl builtin function) getgrgid GID perform the same function as the counterpart in the system library.

(Perl builtin function) getpwent perform the same function as the counterpart in the system library.

(Perl builtin function) getgrent perform the same function as the counterpart in the system library.

(Perl builtin function) setpwent perform the same function as the counterpart in the system library.

(Perl builtin function) setgrent perform the same function as the counterpart in the system library.

(Perl builtin function) endpwent perform the same function as the counterpart in the system library.

(Perl builtin function) endgrent perform the same function as the counterpart in the system library.

(Perl builtin function) setpgrp PID,PGRP Sets the current process group for the specified PID.

Other Libraries, Functions, and Components