Provided by: nmh_1.6-8build1_amd64 
NAME
folder, folders - set/list current folder/message
SYNOPSIS
folder [+folder] [msg] [-all | -noall] [-create | -nocreate] [-fast | -nofast] [-header | -noheader]
[-recurse | -norecurse] [-total | -nototal] [-list | -nolist] [-push | -pop] [-pack | -nopack]
[-print] [-verbose | -noverbose] [-version] [-help]
folders is equivalent to folder -all
DESCRIPTION
Since the nmh environment is the shell, it is easy to lose track of the current folder from day to day.
When folder is given the -print switch (the default), folder will list the current folder, the number of
messages in it, the range of the messages (low-high), and the current message within the folder, and will
flag extra files if they exist. An example of this summary is:
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. By
comparison, 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, the default action is to query the user as to whether
the folder should be created; when standard input is not a tty, the answer to the query is assumed to be
“yes”.
Specifying -create will cause folder to create new folders without any query. (This is the easy way to
create an empty folder for use later.) Specifying -nocreate will cause folder to exit without creating a
non-existant folder. 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 also produce a line for all sub-folders. These
folders are all preceded by the 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 has files which aren't messages. These files may either be sub-folders, or files that don't belong
under the nmh file naming scheme.
The header is output if either a -all or a -header switch is specified. It is suppressed by -noheader.
The folder and message totals are output if either a -all or a -total switch is specified. It is
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 along with the -all switch, folder will, in addition to setting the current folder,
list the top-level subfolders 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 use of this option effectively defeats the speed
enhancement of the -fast option, since each folder must be searched for subfolders. 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 that 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 switch and the -pop switch are mutually exclusive: the last occurrence of either one overrides
any previous occurrence of the other. Both of these switches also set -list by default.
The -list switch directs folder to list the contents of 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 turn off -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-existant folder)
after -create or -nocreate is given.