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Old 04-26-2008
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post_faq(1)						      General Commands Manual						       post_faq(1)

NAME
post_faq - post a USENET periodic posting SYNOPSIS
post_faq -config filename [ -interval days | expression ] [ -inewscmd command ] [ -server server ] [ -idhost hostname ] [ -sigfile filename ] [ -only list | -omit list ] [ -quiet level ] [ -force ] [ -expire_search ] [ -debug ] DESCRIPTION
The post_faq perl(1) script reads USENET periodic postings (a.k.a. "FAQs") and posts them with appropriate Message-ID, Expires, Supersedes, and References headers added. If, when reading an FAQ in order to post it, the script sees a string in the format "@message-id idname@", then it will substitute in place of it the Message ID that it thinks would be used to post the posting with ID name "idname" during the current run of posting. I realize that the previous sentence is extremely confusing; if you don't understand it, and you want to use Message ID substitution, then you can read the script to see exactly what it does :-). Similarly, if the script sees a string in the format "@old-id idname@", it will look for a posting with the specified ID name earlier in the configuration file, and substitute the Message ID used the last time that posting was posted. A warning is printed if the specified posting was not encountered earlier in the configuration file, in which case the string "<unknown>" is substituted. These "@...@" escapes are meant to be used in the body of a posting; don't use them to put the Message-ID and Supersedes fields into a posting header, since the script will do that automatically. The following command-line options are supported, and may be specified in any order: -config filename Specifies the configuration file from which to read information about the FAQs that should be posted. See the section entitled "CONFIGURATION FILE" below for a description of the format of the file. This option must be specified, since a configuration file must be provided. -interval days | expression If a number is specified, it is the default periodicity (in days) with which FAQs should be posted. If the script is run and the interval for an FAQ has not expired, a message to that effect is printed and the FAQ is not posted. This is useful if you want to (for example) run the script once a day from cron(8), and have it automatically figure out when to post. The default interval is 0, which means that posting always occurs (and that no Expires header is added to the posting). If a non-numerical expression is specified, then it is evaluated to determine whether or not the FAQ should be posted. When the expression is evaluated, the following variables are set: $minute (the current minute in the hour), $hour (the current hour), $mday (the current day of the month), $month (the current month, 0 through 11), $year (the current year), $wday (the current day of the week, 0 through 6, 0 is Sunday), $yday (the current day in the year), and $interval (the number of days since the last posting, or undef if there is no previous posting timestamp). For example, to post every monday, use `$wday==1'. To post on the seventh of every month, use `$mday==7'. To post on the second Monday in every month, use `$wday==1 && $mday>7'. You will probably want to use single quotes to protect the interval expression you specify from the shell. Also, beware of using something like `1' as an expres- sion to always post the FAQ, since that will be interpreted as a numerical interval value. Note that specifying an interval expres- sion of `$interval>x', where `x' is some integer, is equivalent to just specifying `x' as the interval expression. If an FAQ is posted with forcing enabled (see the -force option below), then the interval is ignored. Also, note that intervals specified in the configuration file override both the default and the interval specified on the command line. -inewscmd command Specifies the command to pipe into to post the message. Defaults to "/usr/bin/inews". Note that if you specify the -debug option (see below) and also specify a posting command with this option, the command you specify will be used, even though debugging is enabled. -server server Specifies an NNTP server to put into the NNTPSERVER environment variable before running the posting command. Defaults to the con- tents of /etc/news/server. If you don't use NNTP, you don't have to do anything with this. -idhost hostname Specifies the host name to put after the `@' in the Message ID. Defaults to the contents of /etc/mailname. -sigfile filename Specifies the default signature file, which should contain a signature to be appended to the bottom of the posted message, preceded by "-- ". The default is no signature. -only list A comma-separated list of the ID names (see the "CONFIGURATION FILE" section) of the FAQs that should be examined and posted if nec- essary. The other FAQs in the configuration file will be ignored. This option takes precedence over the -omit option (see below). -omit list A comma-separated list of the ID names of FAQS that should be ignored. If -only is specified, then this option is ignored. -quiet level Specifies how quiet post_faq should be when performing its work. The default is 0. If 1 is specified, then progress messages will not be printed, but reports of successful posting will. If 2 is specified, then reports of successful posting will also be omitted, and only errors will be printed. -expire_search When an evaluated Perl expression, rather than a number, is specified for an interval (as described above), post_faq normally will not insert an Expires header in the posted FAQ. However, if -expire_search is specified, or if it is enabled by default when post_faq is installed, then the script will attempt to search forward for the next posting date for the FAQ, and use that as the basis for an Expires header. It does this by counting forward one day at a time and checking if the FAQ should be posted at each subsequent time. Note that if the interval expression is worded in such a way that this forward counting will never land on a timestamp when the FAQ would be posted, the script will loop forever trying to determine when the posting should expire. Therefore, the script prints a warning for every 100 days it goes into the future, to draw the user's attention to a possible infinite loop. -force Forces FAQs to be posted even if they should not be when judging by their timestamps and posting intervals. Force specifications in the configuration file override this flag (i.e., if the configuration file says not to force an FAQ, it will not be forced even when this flag is specified, and if the configuration file says to force, it will be forced even if this flag is omitted). -debug Turns on debugging. The message is sent to stdout instead of posted, and timestamp files are not changed in any way. CONFIGURATION FILE
Each line in the configuration file (excluding lines containing whitespace only and lines starting with '#', which are ignored) represents one FAQ for the program to deal with. Each line contains seven whitespace-separated fields: idname, file, timestamp, interval, sigfile, force, and parent. Empty fields (for the timestamp, interval, sigfile, force and parent fields, which are allowed to be empty) are indi- cated with a single period. A field can be enclosed in single or double quotes to protect whitespace inside it, and a backslash can be used to quote any character in a field (including quotes and whitespace). The meaning of each field is as follows: idname The ID name of the FAQ. Each FAQ in the configuration file must have a unique ID name. The name is used by post_faq when printing messages about the FAQ and when creating its Message-ID. Also, it is used to specify FAQs with the -only and -omit options (see above). file The file in which the text of the FAQ is located. It should be in the correct format for a USENET posting, including a posting header (excluding the header fields that will be added by post_faq). timestamp The timestamp of when the FAQ was last posted. If adding an FAQ to the configuration file for the first time, this should contain a period. post_faq will update this field in the configuration file when it posts the FAQ. interval The posting interval, as described above. If unspecified, the default or command-line-specified interval is used. Be careful to quote the interval if you are using an expression with spaces or tabs in it. sigfile The signature file, as described above. If unspecified, the default or command-line-specified signature file is used. force Whether or not to force the posting of the FAQ, ignoring the interval. If unspecified, the default or command-line-specified value is used. If specified, it should be one of the following numbers: 0 Don't force -- post the FAQ if its interval says that it should be posted. 1 Force the FAQ to be posted the next time post_faq is run, and then switch the force field back to the default value. 2 Always force the FAQ to be posted, without changing the force field when done. 3 Force the FAQ to be posted the next time post_faq is run, and then set the force field to -2. -1 or -2 Never post the FAQ. Any other values are illegal. parent The ID name of the parent article of this one. The parent must appear earlier in the configuration file. If specified, then the current FAQ will not be posted unless the parent FAQ was posted successfully. However, note that if the interval for the current FAQ has not expired, it will not be posted even if the parent was posted, unless "force" is true as well. FILES
The files used by post_faq are the configuration file specified on the command line and the files, specified in the configuration file, containing the text of each FAQ. Furthermore, note that a backup of the configuration file with a ".old" extension is saved when the script is run without the -debug option. AUTHOR
Jonathan I. Kamens <jik@Athena.MIT.EDU>. SEE ALSO
perl(1), inews(1), cron(8) DIAGNOSTICS
Should be self-explanatory. post_faq(1)