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<samba:parameter name="print command"
context="S"
print="1"
xmlns:samba="http://samba.org/common">
<listitem>
<para>After a print job has finished spooling to
a service, this command will be used via a <command moreinfo="none">system()</command>
call to process the spool file. Typically the command specified will
submit the spool file to the host's printing subsystem, but there
is no requirement that this be the case. The server will not remove
the spool file, so whatever command you specify should remove the
spool file when it has been processed, otherwise you will need to
manually remove old spool files.</para>
<para>The print command is simply a text string. It will be used
verbatim after macro substitutions have been made:</para>
<para>%s, %p - the path to the spool
file name</para>
<para>%p - the appropriate printer
name</para>
<para>%J - the job
name as transmitted by the client.</para>
<para>%c - The number of printed pages
of the spooled job (if known).</para>
<para>%z - the size of the spooled
print job (in bytes)</para>
<para>The print command <emphasis>MUST</emphasis> contain at least
one occurrence of <parameter moreinfo="none">%s</parameter> or <parameter moreinfo="none">%f
</parameter> - the <parameter moreinfo="none">%p</parameter> is optional. At the time
a job is submitted, if no printer name is supplied the <parameter moreinfo="none">%p
</parameter> will be silently removed from the printer command.</para>
<para>If specified in the [global] section, the print command given
will be used for any printable service that does not have its own
print command specified.</para>
<para>If there is neither a specified print command for a
printable service nor a global print command, spool files will
be created but not processed and (most importantly) not removed.</para>
<para>Note that printing may fail on some UNIXes from the
<constant>nobody</constant> account. If this happens then create
an alternative guest account that can print and set the <link linkend="GUESTACCOUNT">
<parameter moreinfo="none">guest account</parameter></link>
in the [global] section.</para>
<para>You can form quite complex print commands by realizing
that they are just passed to a shell. For example the following
will log a print job, print the file, then remove it. Note that
';' is the usual separator for command in shell scripts.</para>
<para><command moreinfo="none">print command = echo Printing %s >>
/tmp/print.log; lpr -P %p %s; rm %s</command></para>
<para>You may have to vary this command considerably depending
on how you normally print files on your system. The default for
the parameter varies depending on the setting of the <link linkend="PRINTING">
<parameter moreinfo="none">printing</parameter></link> parameter.</para>
<para>Default: For <command moreinfo="none">printing = BSD, AIX, QNX, LPRNG
or PLP :</command></para>
<para><command moreinfo="none">print command = lpr -r -P%p %s</command></para>
<para>For <command moreinfo="none">printing = SYSV or HPUX :</command></para>
<para><command moreinfo="none">print command = lp -c -d%p %s; rm %s</command></para>
<para>For <command moreinfo="none">printing = SOFTQ :</command></para>
<para><command moreinfo="none">print command = lp -d%p -s %s; rm %s</command></para>
<para>For printing = CUPS : If SAMBA is compiled against
libcups, then <link linkend="PRINTING">printcap = cups</link>
uses the CUPS API to
submit jobs, etc. Otherwise it maps to the System V
commands with the -oraw option for printing, i.e. it
uses <command moreinfo="none">lp -c -d%p -oraw; rm %s</command>.
With <command moreinfo="none">printing = cups</command>,
and if SAMBA is compiled against libcups, any manually
set print command will be ignored.</para>
<para>Example: <command moreinfo="none">print command = /usr/local/samba/bin/myprintscript %p %s</command></para>
</listitem>
</samba:parameter>
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