Provided by: nmh_1.7.1-6_amd64 
NAME
folder, folders - set/list current nmh folder/message
SYNOPSIS
folder [-help] [-version] [+folder] [msg] [-all | -noall] [-create | -nocreate] [-fast | -nofast]
[-header | -noheader] [-recurse | -norecurse] [-total | -nototal] [-list | -nolist] [-push | -pop]
[-pack | -nopack] [-print] [-verbose | -noverbose]
folders is equivalent to folder -all
DESCRIPTION
When folder is given the -print switch (the default), it lists: the current folder, the number of
messages in it and their range (low-high), the folder's current message, and an indication of extra
files, if any. For example:
inbox+ has 16 messages ( 3- 22); cur= 5.
If a +folder and/or msg are specified, they will become the current folder and/or message. (When a
+folder argument is given, this corresponds to a “cd” operation in the shell; when no +folder argument is
given, this corresponds roughly to a “pwd” operation in the shell.)
If the specified (or default) folder doesn't exist, folder will ask the user if the folder should be
created; when standard input is not a tty, the answer is assumed to be “yes”. The -create switch tells
folder to create new folders without query. (This is an easy way to create an empty folder for later
use.) Specifying -nocreate will cause folder to print an error message and exit without creating a
folder.
Multiple Folders
Specifying -all will produce a summary line for each top-level folder in the user's nmh directory, sorted
alphabetically. (If folder is invoked by a name ending with “s” (e.g. folders), -all is assumed.)
Specifying -recurse with -all will include a line for all sub-folders. These folders are all preceded by
any read-only folders, which occur as “atr-cur-” entries in the user's nmh context. For example:
FOLDER # MESSAGES RANGE CUR (OTHERS)
/var/work/folder has 35 messages ( 1- 35); cur=23.
/usr/bugs/Mail has 82 messages ( 1-108); cur=82.
ff has no messages.
inbox+ has 16 messages ( 3- 22); cur= 5.
mh has 76 messages (15- 76); cur=70.
notes has 2 messages ( 1- 2); cur= 1.
ucom has 124 messages ( 1-124); cur= 6; (others).
TOTAL = 339 messages in 7 folders
The “+” after inbox indicates that it is the current folder. The “(others)” indicates that the folder
ucom contains files which aren't messages; these may either be sub-folders, or files that don't belong
under the nmh file naming scheme.
The header is output if either the -all or -header switches are specified. It is suppressed by
-noheader.
The folder and message totals are output if either the -all or -total switches are specified. They are
suppressed by -nototal.
If -fast is given, only the folder name (or names, in the case of -all) will be listed. (This is faster
because the folders need not be read.)
If a +folder is given with the -all switch, folder will, in addition to setting the current folder, list
the top-level sub-folders for the current folder (with -norecurse) or list all sub-folders under the
current folder recursively (with -recurse).
If msg is supplied, together with +folder or without -all, it will become the current message of +folder
(if it had been supplied) or the current folder.
The -recurse switch lists each folder recursively, so its use effectively defeats the speed enhancement
of -fast, since each folder must be searched for sub-folders. Nevertheless, the combination of these
options is useful.
Compacting a Folder
The -pack switch will compress the message names in the designated folders, removing holes in message
numbering. The -verbose switch directs folder to tell the user the general actions it is taking to
compress the folder.
The Folder Stack
The -push switch directs folder to push the current folder onto the folder-stack, and make the +folder
argument the current folder. If +folder is not given, the current folder and the top of the folder-stack
are exchanged. This corresponds to the “pushd” operation in the shell.
The -pop switch directs folder to discard the top of the folder-stack, after setting the current folder
to that value. No +folder argument is allowed. This corresponds to the “popd” operation in the shell.
The -push and -pop switches are mutually exclusive: the last occurrence of either one overrides any
previous occurrence of the other. The use of either of these switches also sets -list, by default.
The -list switch directs folder to list the folder-stack. No +folder argument is allowed. After a
successful -push or -pop, the -list action is taken, unless a -nolist switch follows them on the command
line. This corresponds to the “dirs” operation in the shell. The -push, -pop, and -list switches all
disable -print.
FILES
$HOME/.mh_profile The user's profile.
PROFILE COMPONENTS
Path: To determine the user's nmh directory.
Current-Folder: To find the default current folder.
Folder-Protect: To set mode when creating a new folder.
Folder-Stack: To determine the folder stack.
SEE ALSO
mhpath(1), refile(1), rmf(1)
DEFAULTS
+folder The current folder.
msg “none”
-nofast
-noheader
-nototal
-nopack
-norecurse
-noverbose
-print is the default if no -list, -push, or -pop is specified.
-list is the default if -push, or -pop is specified.
CONTEXT
If +folder and/or msg are given, they will become the current folder and/or message.
BUGS
There is no way to restore the default behavior (to ask the user whether to create a non-existent folder)
after -create or -nocreate is given.
nmh-1.7.1 2016-08-29 FOLDER(1mh)