Unix Administration 5

ITI-481: Unix Administration Meeting 5 Christopher Uriarte Rutgers University Center for Applied Computing Technologies

Today’s Agenda ,[object Object],[object Object],[object Object]

The Cron Program ,[object Object],[object Object],[object Object],[object Object]

Cron Files ,[object Object],[object Object]

Cron Files, con’t. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Crontab File Format ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Crontab File Formatting Rules ,[object Object],[object Object],[object Object],[object Object]

Sample Cron Entries ,[object Object],[object Object],[object Object],[object Object]

Editing Crontab files ,[object Object],[object Object],[object Object],[object Object]

Editing Crontab files, con’t. ,[object Object],[object Object],[object Object]

/etc/crontab ,[object Object],[object Object],[object Object]

Exercise: Creating Crontab Entries ,[object Object],[object Object],[object Object]

Syslogd ,[object Object],[object Object],[object Object],[object Object],[object Object]

/etc/syslog.conf ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Additional Log Files ,[object Object],[object Object],[object Object]

Electronic Mail System Components ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sample Exchange: Sending, Receiving and Retrieving Electronic Mail Workstation Workstation POP Server SMTP Server Mail Spool SMTP Server SMTP and POP Servers can be the same system Sending Mail Retrieving Mail SMTP Relay SMTP Connection POP Connection Receiving Mail MUA MTA MTA MDA MUA

SMTP ,[object Object],[object Object],[object Object]

Sample SMTP Exchange with a Mail Server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exercise: Sending a Message ,[object Object],[object Object],[object Object],[object Object],[object Object]

Sendmail ,[object Object],[object Object],[object Object]

Sendmail Components ,[object Object],[object Object],[object Object],[object Object]

Receiving Electronic Mail ,[object Object],[object Object]

Aliases File ,[object Object],[object Object],[object Object]

Exercise: Creating Aliases ,[object Object],[object Object],[object Object]

Retrieving and Reading Email ,[object Object],[object Object],[object Object],[object Object],[object Object]

POP3 ,[object Object],[object Object],[object Object],[object Object]

IMAP ,[object Object],[object Object],[object Object],[object Object],[object Object]

Job Scheduling in UNIX ,[object Object],[object Object],[object Object],[object Object],[object Object]

Unix Administration 5

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Unix Administration 5