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The cron command-line utility is a job scheduler on Unix-like operating systems.Users who set up and maintain software environments use cron to schedule jobs [1] (commands or shell scripts), also known as cron jobs, [2] [3] to run periodically at fixed times, dates, or intervals. [4]
Called regularly by cron, sadc does the monitoring and stores its measurements to files in the /var/log/sa/ folder. The sar client can be used to explore this data. System Activity Report ( sar ) is a Unix System V -derived system monitor command used to report on various system loads, including CPU activity, memory/paging, interrupts, device ...
anacron is a computer program that performs periodic command scheduling, which is traditionally done by cron, but without assuming that the system is running continuously.. Thus, it can be used to control the execution of daily, weekly, and monthly jobs (or anything with a period of n days) on systems that don't run 24 hours a
Alternatively, AIDE can be configured to run on a schedule and report changes daily using scheduling technologies such as cron, which is the default behavior of the Debian AIDE package. [ 2 ] This is mainly useful for security purposes, given that any malicious change which could have happened inside the system would be reported by AIDE.
It formats and prints the contents of the last login log file, /var/log/lastlog (which is a usually a very sparse file), including the login name, port, and last login date and time. It is similar in functionality to the BSD program last , also included in Linux distributions; however, last parses a different binary database file ( /var/log ...
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nice is a program found on Unix and Unix-like operating systems such as Linux.It directly maps to a kernel call of the same name. nice is used to invoke a utility or shell script with a particular CPU priority, thus giving the process more or less CPU time than other processes.
Utmpx and wtmpx are extensions to the original utmp and wtmp, originating from Sun Microsystems.Utmpx is specified in POSIX. [3] The utmp, wtmp and btmp files were never a part of any official Unix standard, such as Single UNIX Specification, while utmpx and corresponding APIs are part of it.