sca_sles15 Exam Dumps : SUSE Certified Administrator in Enterprise Linux 15

The types of files that are used for inter-process communications are pipe and socket files. Pipe files are used for unidirectional data flow between two processes. They can be created with the mkfifo command or with the | operator in a shell command. Socket files are used for bidirectional data exchange between processes on the same or different machines. They can be created with various system calls or commands depending on the protocol and domain. References:

Log file rotation is the process of compressing or deleting old log files to save disk space and improve performance. The /etc/logrotate.conf file controls the global settings for log file rotation, such as frequency, size limit, compression method, etc. The /etc/logrotate.d/ directory contains configuration files for specific log files that can override the global settings in /etc/logrotate.conf. The /usr/sbin/logrotate program is used to perform log file rotation according to the configuration files. It is usually invoked by a cron job in /etc/cron.daily/logrotate. References:

When using the nice command, -15 is the higher priority than 7. The nice command can be used to run a process with a modified scheduling priority. The priority value ranges from -20 (highest priority) to 19 (lowest priority). The default priority is 0. Only root can assign negative priority values to processes. References: