Does PostgreSQL support job?

<div class="Section1"><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial">Hi,</span></font><p class="MsoNormal"><font face="Arial" size="2"><span style="font-size:10.0pt;
font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span lang="EN-CA" style="font-size:
10.0pt;font-family:Arial">I try to find in the documentation whether PostgreSQL supports job, but I miserably failed. 
DoesPostgreSQL support job?  If not, what is the mechanism mostly adopted by PostgreSQL administrators for running jobs
againstPostgreSQL?  I was thinking about using cron/plsql/sql-scripts on Linux.</span></font><p class="MsoNormal"><font
face="Arial"size="2"><span lang="EN-CA" style="font-size: 
10.0pt;font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span lang="EN-CA"
style="font-size:
10.0pt;font-family:Arial">Thanks (Tom Lane </span></font><font face="Wingdings" size="2"><span lang="EN-CA"
style="font-size:10.0pt;font-family:Wingdings">J</span></font><fontface="Arial" size="2"><span lang="EN-CA"
style="font-size:10.0pt;font-family:Arial">)</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span
lang="EN-CA"style="font-size: 
10.0pt;font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span lang="EN-CA"
style="font-size:
10.0pt;font-family:Arial">--</span></font><span lang="EN-CA"></span><p class="MsoNormal"><font face="Arial"
size="2"><spanlang="EN-CA" style="font-size: 
10.0pt;font-family:Arial">Daniel CAUNE</span></font><span lang="EN-CA"></span><p class="MsoNormal"><font face="Times
NewRoman" size="3"><span lang="EN-CA" style="font-size:12.0pt"> </span></font></div>