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Shell Programming and Scripting
Mail cleanup from ksh script, keeping 50 most recent msgs
Post 302368282 by cfajohnson on Wednesday 4th of November 2009 01:33:38 PM
11-04-2009
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LEARN ABOUT SUSE
mhpath
MHPATH(1) [nmh-1.5] MHPATH(1) NAME
mhpath - print full pathnames of nmh messages and folders SYNOPSIS
mhpath [+folder] [msgs] [-version] [-help] DESCRIPTION
mhpath expands and sorts the message list `msgs' and writes the full pathnames of the messages to the standard output separated by new- lines. If no `msgs' are specified, mhpath outputs the current mail folder's pathname instead. If the only argument is `+', your nmh "Path" is output; this can be useful in shell scripts. Contrasted with other nmh commands, a message argument to mhpath may often be intended for writing. Because of this: 1) the name "new" has been added to mhpath's list of reserved message names (the others are "first", "last", "prev", "next", "cur", and "all"). The new message is equivalent to the message after the last message in a folder (and equivalent to 1 in a folder without mes- sages). The "new" message may not be used as part of a message range. 2) Within a message list, the following designations may refer to messages that do not exist: a single numeric message name, the single message name "cur", and (obviously) the single message name "new". All other message designations must refer to at least one existing message, if the folder contains messages. 3) An empty folder is not in itself an error. A message number less than that of the smallest existing message in a folder is treated as if the message already exists. A message number greater than that of the highest existing message in a folder causes an "out of range" error message to be displayed. As part of a range designation that contains messages that do exist, message numbers less than the smallest, or greater than the highest, existing message in a folder are ignored. Examples: The current folder foo contains messages 3 5 6. Cur is 4. % mhpath /r/phyl/Mail/foo % mhpath all /r/phyl/Mail/foo/3 /r/phyl/Mail/foo/5 /r/phyl/Mail/foo/6 % mhpath 2001 mhpath: message 2001 out of range 1-6 % mhpath 1-2001 /r/phyl/Mail/foo/3 /r/phyl/Mail/foo/5 /r/phyl/Mail/foo/6 % mhpath new /r/phyl/Mail/foo/7 % mhpath last new /r/phyl/Mail/foo/6 /r/phyl/Mail/foo/7 % mhpath last-new mhpath: bad message list last-new % mhpath cur /r/phyl/Mail/foo/4 % mhpath 1-2 mhpath: no messages in range 1-2 % mhpath first:2 /r/phyl/Mail/foo/3 /r/phyl/Mail/foo/5 % mhpath 1 2 /r/phyl/Mail/foo/1 /r/phyl/Mail/foo/2 mhpath is also useful in back-quoted operations: % cd `mhpath +inbox` % echo `mhpath +` /r/phyl/Mail FILES
$HOME/.mh_profile The user profile PROFILE COMPONENTS
Path: To determine the user's nmh directory Current-Folder: To find the default current folder SEE ALSO
folder(1) DEFAULTS
`+folder' defaults to the current folder `msgs' defaults to none CONTEXT
None BUGS
Like all nmh commands, mhpath expands and sorts [msgs]. So don't expect mv `mhpath 501 500` to move 501 to 500. Quite the reverse. But mv `mhpath 501` `mhpath 500` will do the trick. Out of range message 0 is treated far more severely than large out of range message numbers. MH.6.8 11 June 2012 MHPATH(1)