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MAIL(1) UNIX Programmer's Manual MAIL(1) NAME mail - send and receive mail SYNOPSIS mail [ -v ] [ -i ] [ -n ] [ -s subject ] [ user ... ] mail [ -v ] [ -i ] [ -n ] -f [ name ] mail [ -v ] [ -i ] [ -n ] -u user INTRODUCTION Mail is a intelligent mail processing system, which has a command syntax reminiscent of ed with lines replaced by mes- sages. The -v flag puts mail into verbose mode; the details of delivery are displayed on the users terminal. The -i flag causes tty interrupt signals to be ignored. This is particu- larly useful when using mail on noisy phone lines. The -n flag inhibits the reading of /etc/Mail.rc. Sending mail. To send a message to one or more people, mail can be invoked with arguments which are the names of people to whom the mail will be sent. You are then expected to type in your message, followed by an EOT (control-D) at the beginning of a line. A subject may be specified on the com- mand line by using the -s flag. (Only the first argument after the -s flag is used as a subject; be careful to quote subjects containing spaces.) The section below, labeled Replying to or originating mail, describes some features of mail available to help you compose your letter. Reading mail. In normal usage mail is given no arguments and checks your mail out of the post office, then prints out a one line header of each message there. The current mes- sage is initially the first message (numbered 1) and can be printed using the print command (which can be abbreviated p). You can move among the messages much as you move between lines in ed, with the commands `+' and `-' moving backwards and forwards, and simple numbers. Disposing of mail. After examining a message you can delete (d) the message or reply (r) to it. Deletion causes the mail program to forget about the message. This is not irreversible; the message can be undeleted (u) by giving its number, or the mail session can be aborted by giving the exit (x) command. Deleted messages will, however, usually disappear never to be seen again. Specifying messages. Commands such as print and delete can be given a list of message numbers as arguments to apply to a number of messages at once. Thus ``delete 1 2'' deletes messages 1 and 2, while ``delete 1-5'' deletes messages 1 through 5. The special name ``*'' addresses all messages, Printed 11/26/99 October 22, 1996 1 MAIL(1) UNIX Programmer's Manual MAIL(1) and ``$'' addresses the last message; thus the command top which prints the first few lines of a message could be used in ``top *'' to print the first few lines of all messages. Replying to or originating mail. You can use the reply com- mand to set up a response to a message, sending it back to the person who it was from. Text you then type in, up to an end-of-file, defines the contents of the message. While you are composing a message, mail treats lines beginning with the character `~' specially. For instance, typing ``~m'' (alone on a line) will place a copy of the current message into the response right shifting it by a tabstop. Other escapes will set up subject fields, add and delete reci- pients to the message and allow you to escape to an editor to revise the message or to a shell to run some commands. (These options are given in the summary below.) Ending a mail processing session. You can end a mail ses- sion with the quit (q) command. Messages which have been examined go to your mbox file unless they have been deleted in which case they are discarded. Unexamined messages go back to the post office. The -f option causes mail to read in the contents of your mbox (or the specified file) for processing; when you quit, mail writes undeleted messages back to this file. The -u flag is a short way of doing "mail -f /usr/spool/mail/user". Personal and systemwide distribution lists. It is also pos- sible to create a personal distribution lists so that, for instance, you can send mail to ``cohorts'' and have it go to a group of people. Such lists can be defined by placing a line like alias cohorts bill ozalp jkf mark kridle@ucbcory in the file .mailrc in your home directory. The current list of such aliases can be displayed with the alias (a) command in mail. System wide distribution lists can be created by editing /etc/aliases, see aliases(5) and send- mail(8); these are kept in a different syntax. In mail you send, personal aliases will be expanded in mail sent to oth- ers so that they will be able to reply to the recipients. System wide aliases are not expanded when the mail is sent, but any reply returned to the machine will have the system wide alias expanded as all mail goes through sendmail. Network mail (ARPA, UUCP, Berknet) See mailaddr(7) for a description of network addresses. Mail has a number of options which can be set in the .mailrc file to alter its behavior; thus ``set askcc'' enables the ``askcc'' feature. (These options are summarized below.) Printed 11/26/99 October 22, 1996 2 MAIL(1) UNIX Programmer's Manual MAIL(1) SUMMARY (Adapted from the `Mail Reference Manual') Each command is typed on a line by itself, and may take arguments following the command word. The command need not be typed in its entirety - the first command which matches the typed prefix is used. For commands which take message lists as arguments, if no message list is given, then the next message forward which satisfies the command's require- ments is used. If there are no messages forward of the current message, the search proceeds backwards, and if there are no good messages at all, mail types ``No applicable mes- sages'' and aborts the command. - Goes to the previous message and prints it out. If given a numeric argument n, goes to the n-th previous message and prints it. ? Prints a brief summary of commands. ! Executes the UNIX shell command which follows. Print (P) Like print but also prints out ignored header fields. See also print , ignore and retain. Reply (R) Reply to originator. Does not reply to other recipients of the original message. Type (T) Identical to the Print command. alias (a) With no arguments, prints out all currently-defined aliases. With one argument, prints out that alias. With more than one argu- ment, creates an new or changes an on old alias. alternates (alt) The alternates command is useful if you have accounts on several machines. It can be used to inform mail that the listed addresses are really you. When you reply to messages, mail will not send a copy of the message to any of the addresses listed on the alternates list. If the alternates command is given with no argu- ment, the current set of alternate names is displayed. chdir (c) Changes the user's working directory to that specified, if given. If no directory is given, then changes to the user's login directory. copy (co) The copy command does the same thing that save does, except that it does not mark the Printed 11/26/99 October 22, 1996 3 MAIL(1) UNIX Programmer's Manual MAIL(1) messages it is used on for deletion when you quit. delete (d) Takes a list of messages as argument and marks them all as deleted. Deleted messages will not be saved in mbox, nor will they be available for most other commands. dp (also dt) Deletes the current message and prints the next message. If there is no next message, mail says ``at EOF.'' edit (e) Takes a list of messages and points the text editor at each one in turn. On return from the editor, the message is read back in. exit (ex or x) Effects an immediate return to the Shell without modifying the user's system mail- box, his mbox file, or his edit file in -f. file (fi) The same as folder. folders List the names of the folders in your folder directory. folder (fo) The folder command switches to a new mail file or folder. With no arguments, it tells you which file you are currently reading. If you give it an argument, it will write out changes (such as deletions) you have made in the current file and read in the new file. Some special con- ventions are recognized for the name. # means the previous file, % means your system mailbox, %user means user's system mailbox, & means your ~/mbox file, and +folder means a file in your folder directory. from (f) Takes a list of messages and prints their message headers. headers (h) Lists the current range of headers, which is an 18 message group. If a ``+'' argument is given, then the next 18 message group is printed, and if a ``-'' argument is given, the previous 18 message group is printed. help A synonym for ? hold (ho, also preserve) Takes a message list and marks each message therein to be saved in the user's system mailbox instead of in mbox. Does not override the delete command. Printed 11/26/99 October 22, 1996 4 MAIL(1) UNIX Programmer's Manual MAIL(1) ignore N.B.: Ignore has been superseded by retain. Add the list of header fields named to the ignored list. Header fields in the ignore list are not printed on your terminal when you print a message. This command is very handy for suppression of certain machine-generated header fields. The Type and Print commands can be used to print a message in its entirety, including ignored fields. If ignore is executed with no arguments, it lists the current set of ignored fields. mail (m) Takes as argument login names and distribu- tion group names and sends mail to those people. mbox Indicate that a list of messages be sent to mbox in your home directory when you quit. This is the default action for messages if you do not have the hold option set. next (n like + or CR) Goes to the next message in sequence and types it. With an argument list, types the next matching message. preserve (pre) A synonym for hold. print (p) Takes a message list and types out each mes- sage on the user's terminal. quit (q) Terminates the session, saving all undeleted, unsaved messages in the user's mbox file in his login directory, preserving all mes- sages marked with hold or preserve or never referenced in his system mailbox, and removing all other messages from his system mailbox. If new mail has arrived during the session, the message ``You have new mail'' is given. If given while editing a mailbox file with the -f flag, then the edit file is rewritten. A return to the Shell is effected, unless the rewrite of edit file fails, in which case the user can escape with the exit command. reply (r) Takes a message list and sends mail to the sender and all recipients of the specified mes- sage. The default message must not be deleted. respond A synonym for reply. retain Add the list of header fields named to the retained list. Only the header fields in the retain list are shown on your terminal when you Printed 11/26/99 October 22, 1996 5 MAIL(1) UNIX Programmer's Manual MAIL(1) print a message. All other header fields are suppressed. The Type and Print commands can be used to print a message in its entirety. If retain is executed with no arguments, it lists the current set of retained fields. save (s) Takes a message list and a filename and appends each message in turn to the end of the file. The filename in quotes, followed by the line count and character count is echoed on the user's terminal. set (se) With no arguments, prints all variable values. Otherwise, sets option. Arguments are of the form ``option=value'' (no space before or after =) or ``option.'' shell (sh) Invokes an interactive version of the shell. size Takes a message list and prints out the size in characters of each message. source (so) The source command reads mail commands from a file. top Takes a message list and prints the top few lines of each. The number of lines printed is controlled by the variable toplines and defaults to five. type (t) A synonym for print. unalias Takes a list of names defined by alias commands and discards the remembered groups of users. The group names no longer have any significance. undelete (u) Takes a message list and marks each message as not being deleted. unread (U) Takes a message list and marks each message as not having been read. unset Takes a list of option names and discards their remembered values; the inverse of set. visual (v) Takes a message list and invokes the display editor on each message. write (w) Similar to save, except that only the mes- sage body (without the header) is saved. Extremely useful for such tasks as sending and Printed 11/26/99 October 22, 1996 6 MAIL(1) UNIX Programmer's Manual MAIL(1) receiving source program text over the message system. xit (x) A synonym for exit. z Mail presents message headers in windowfuls as described under the headers command. You can move mail's attention forward to the next window with the z command. Also, you can move to the previous window by using z-. Here is a summary of the tilde escapes, which are used when composing messages to perform special functions. Tilde escapes are only recognized at the beginning of lines. The name ``tilde escape'' is somewhat of a misnomer since the actual escape character can be set by the option escape. ~!command Execute the indicated shell command, then return to the message. ~b name ... Add the given names to the list of carbon copy recipients but do not make the names visible in the Cc: line ("blind" carbon copy). ~c name ... Add the given names to the list of carbon copy recipients. ~d Read the file ``dead.letter'' from your home directory into the message. ~e Invoke the text editor on the message collected so far. After the editing session is finished, you may continue appending text to the message. ~f messages Read the named messages into the message being sent. If no messages are specified, read in the current message. ~h Edit the message header fields by typing each one in turn and allowing the user to append text to the end or modify the field by using the current terminal erase and kill characters. ~m messages Read the named messages into the message being sent, shifted right one tab. If no messages are specified, read the current message. ~p Print out the message collected so far, prefaced by the message header fields. ~q Abort the message being sent, copying the mes- sage to ``dead.letter'' in your home directory Printed 11/26/99 October 22, 1996 7 MAIL(1) UNIX Programmer's Manual MAIL(1) if save is set. ~r filename Read the named file into the message. ~s string Cause the named string to become the current subject field. ~t name ... Add the given names to the direct recipient list. ~v Invoke an alternate editor (defined by the VISUAL option) on the message collected so far. Usually, the alternate editor will be a screen editor. After you quit the editor, you may resume appending text to the end of your mes- sage. ~w filename Write the message onto the named file. ~|command Pipe the message through the command as a filter. If the command gives no output or ter- minates abnormally, retain the original text of the message. The command fmt(1) is often used as command to rejustify the message. ~~string Insert the string of text in the message pre- faced by a single ~. If you have changed the escape character, then you should double that character in order to send it. Options are controlled via the set and unset commands. Options may be either binary, in which case it is only sig- nificant to see whether they are set or not; or string, in which case the actual value is of interest. The binary options include the following: append Causes messages saved in mbox to be appended to the end rather than prepended. (This is set in /etc/Mail.rc on 2.11BSD systems.) ask Causes mail to prompt you for the subject of each message you send. If you respond with simply a newline, no subject field will be sent. askcc Causes you to be prompted for additional car- bon copy recipients at the end of each mes- sage. Responding with a newline indicates your satisfaction with the current list. autoprint Causes the delete command to behave like dp - thus, after deleting a message, the next one Printed 11/26/99 October 22, 1996 8 MAIL(1) UNIX Programmer's Manual MAIL(1) will be typed automatically. debug Setting the binary option debug is the same as specifying -d on the command line and causes mail to output all sorts of informa- tion useful for debugging mail. dot The binary option dot causes mail to inter- pret a period alone on a line as the termina- tor of a message you are sending. hold This option is used to hold messages in the system mailbox by default. ignore Causes interrupt signals from your terminal to be ignored and echoed as @'s. ignoreeof An option related to dot is ignoreeof which makes mail refuse to accept a control-d as the end of a message. Ignoreeof also applies to mail command mode. metoo Usually, when a group is expanded that con- tains the sender, the sender is removed from the expansion. Setting this option causes the sender to be included in the group. nosave Normally, when you abort a message with two RUBOUT, mail copies the partial letter to the file ``dead.letter'' in your home directory. Setting the binary option nosave prevents this. Replyall Reverses the sense of reply and Reply com- mands. quiet Suppresses the printing of the version when first invoked. verbose Setting the option verbose is the same as using the -v flag on the command line. When mail runs in verbose mode, the actual delivery of messages is displayed on he users terminal. The following options have string values: EDITOR Pathname of the text editor to use in the edit command and ~e escape. If not defined, then a default editor is used. PAGER Pathname of the program to use in the more Printed 11/26/99 October 22, 1996 9 MAIL(1) UNIX Programmer's Manual MAIL(1) command or when crt variable is set. A default paginator is used if this option is not defined. SHELL Pathname of the shell to use in the ! command and the ~! escape. A default shell is used if this option is not defined. VISUAL Pathname of the text editor to use in the visual command and ~v escape. crt The valued option crt is used as a threshold to determine how long a message must be before PAGER is used to read it. escape If defined, the first character of this option gives the character to use in the place of ~ to denote escapes. folder The name of the directory to use for storing folders of messages. If this name begins with a `/', mail considers it to be an absolute pathname; otherwise, the folder directory is found relative to your home directory. record If defined, gives the pathname of the file used to record all outgoing mail. If not defined, then outgoing mail is not so saved. toplines If defined, gives the number of lines of a message to be printed out with the top com- mand; normally, the first five lines are printed. FILES /usr/spool/mail/* post office ~/mbox your old mail ~/.mailrc file giving initial mail commands /tmp/R# temporary for editor escape /usr/share/misc/Mail.help*help files /etc/Mail.rc system initialization file Message* temporary for editing messages SEE ALSO binmail(1), fmt(1), newaliases(1), aliases(5), mailaddr(7), sendmail(8) `The Mail Reference Manual' BUGS There are many flags that are not documented here. Most are not useful to the general user. Usually, mail is just a link to Mail, which can be Printed 11/26/99 October 22, 1996 10 MAIL(1) UNIX Programmer's Manual MAIL(1) confusing. AUTHOR Kurt Shoens Printed 11/26/99 October 22, 1996 11
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