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| 15 | <H2><A NAME="checkpc"></A> <A NAME="s9">9. LPRng checkpc Utility</A></H2> |
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| 16 | |
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| 17 | <P>The <CODE>checkpc</CODE> (check printcap file) is one of the most |
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| 18 | useful utilities in the LPRng package. |
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| 19 | <P>It will read all the configuration files, printcap files and tests |
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| 20 | whether devices are set up correctly. Optionally, it will also set the |
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| 21 | permissions for spool directories and device files. Additionally, it |
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| 22 | will truncate the accounting and log files to a maximum size. Another |
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| 23 | use for <CODE>checkpc</CODE> is to remove old entries from queue |
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| 24 | directories. |
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| 25 | <P>For a new installation, you will want to run |
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| 26 | <BLOCKQUOTE><CODE> |
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| 27 | <PRE> |
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| 28 | checkpc -f -V |
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| 29 | </PRE> |
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| 30 | </CODE></BLOCKQUOTE> |
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| 31 | |
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| 32 | to set the permissions right. The <CODE>-f</CODE> flag instructs the |
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| 33 | program to correct file permissions. If you don't run this as |
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| 34 | <CODE>root</CODE>, you'll receive a warning about that fact and any |
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| 35 | <B>chown(2)</B> calls will (most likely) fail. |
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| 36 | <P>The program reports everything it changes. Since it isn't too clever |
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| 37 | about some things (visit the man page), you should keep an eye on the |
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| 38 | output, and run it again if needed. If it keeps failing, change the |
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| 39 | permissions yourself. |
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| 40 | <H2><A NAME="ss9.1">9.1 Maintenance</A> |
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| 41 | </H2> |
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| 42 | |
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| 43 | <P>Later, you will want to use <CODE>checkpc</CODE> for the daily |
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| 44 | maintenance of your system. I have this line in user <CODE>lp</CODE>'s |
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| 45 | crontab: |
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| 46 | <BLOCKQUOTE><CODE> |
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| 47 | <PRE> |
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| 48 | 32 5 * * * checkpc -t 10K -A3 -r >/dev/null 2>&1 |
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| 49 | </PRE> |
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| 50 | </CODE></BLOCKQUOTE> |
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| 51 | |
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| 52 | This job will: |
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| 53 | <OL> |
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| 54 | <LI>truncate all log and accounting files to 10KB (<CODE>-t 10K</CODE>). |
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| 55 | Actually, it will keep the last 10K from the file, starting on a |
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| 56 | complete line.</LI> |
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| 57 | <LI>remove all stale files older than three days (<CODE>-A3 -r</CODE>).</LI> |
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| 58 | </OL> |
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| 59 | |
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| 60 | I'm redirecting output to <CODE>/dev/null</CODE>, because <CODE>checkpc</CODE> |
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| 61 | is a little noisy to my taste. (But too noisy is better than too |
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| 62 | silent :) |
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| 63 | <H2><A NAME="ss9.2">9.2 Printcap Information</A> |
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| 64 | </H2> |
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| 65 | |
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| 66 | <P>You can use <CODE>checkpc -V -P</CODE> |
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| 67 | to examine printcaps and tell you what |
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| 68 | they contain. |
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| 69 | This is identical to the <CODE>lpc server all</CODE> operation, |
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| 70 | but with a higher level of verbosity. |
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