Filtering mail into a named pipe

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to test named pipe file?

Hi ALL, How can I test a given file name exists and if it is a named pipe file in shell script ? Thanks............

2. UNIX for Dummies Questions & Answers

Ok, I can't seem to figure this out or find anything on the web about this. I'm on Sun Solaris, UNIX. I have the following test script: #!/bin/ksh touch test.file LOG=./tmp.log rm -f ${LOG} PIPE=./tmp.pipe mkfifo ${PIPE} trap "rm -f ${PIPE}" EXIT tee -a ${LOG} < ${PIPE} & ...

3. Programming

Named pipe behavior in Linux

Hi All ! I try to collect importent events from syslog and in my syslog conf, there is something like this: *.* |/logs/ipes/SLpipe1 I have a program, which opens this pipe and reads the messages from it. But how this pipe works ? Where can I probably read something about the details,...

4. Shell Programming and Scripting

Named pipe performance

Hi, I am getting data into a Named pipe. Does Named pipe have any size restriction; I know it does not have any storage and it just passes on the data to the next process. I want to know, if there will be a difference in the Named pipe performance if the data input is more. (I am using DB2...

5. UNIX for Advanced & Expert Users

will a named pipe always be size 0 on filesystem?

I did cat < myFile >> myPipe I was hoping that if I did ls -l, myPipe would now be holding the contents of myFile, and would be the same size. But it was 0. Also strange was that when I did the command above, cat did not return control back to the shell. Why? thanks

6. UNIX for Dummies Questions & Answers

Named Pipe contents to a file

I want to copy the contents of a named pipe to a file. I have tried using: cat pipe.p >> transcript.log but I have been unsuccessful, any ideas?

7. UNIX for Dummies Questions & Answers

Named PIPE

Gurus, I've a File Transaction Server, which communicates with other servers and performs some processing.It uses many Named PIPE's. By mistake i copied a named PIPE into a text file. I heard that PIPE files shouldn't be copied.Isn't it? Since it's a production box, i'm afraid on...

8. UNIX for Advanced & Expert Users

named pipe with persistent buffer

Hey folks, i need communicate between 2 processes in a reliable manner. The information delivery has to be guarenteed. I thought about proc 2 sending a signal to proc 1 when information has being written to disc and wirte() has been verified (sync/flush). The IPC method for the data is named...

9. Programming

IPC using named pipe

Hi All, I am facing a vague issue while trying to make two process talk to each other using named pipe. read process ========= The process which reads, basically creates FIFO using mkfifo - ret_val = mkfifo(HALF_DUPLEX, 0666) func. It then opens the pipe using open func - fd = open...

10. UNIX for Advanced & Expert Users

IPC using named pipe

Hi All, I am facing a vague issue while trying to make two process talk to each other using named pipe. read process ========= The process which reads, basically creates FIFO using mkfifo - ret_val = mkfifo(HALF_DUPLEX, 0666);) func. It then opens the pipe using open func - fd =...

LEARN ABOUT LINUX

pam_mail

PAM_MAIL(8)							 Linux-PAM Manual						       PAM_MAIL(8)

NAME

       pam_mail - Inform about available mail

SYNOPSIS

       pam_mail.so [close] [debug] [dir=maildir] [empty] [hash=count] [noenv] [nopen] [quiet] [standard]

DESCRIPTION

       The pam_mail PAM module provides the "you have new mail" service to the user. It can be plugged into any application that has credential or
       session hooks. It gives a single message indicating the newness of any mail it finds in the user's mail folder. This module also sets the
       PAM environment variable, MAIL, to the user's mail directory.

       If the mail spool file (be it /var/mail/$USER or a pathname given with the dir= parameter) is a directory then pam_mail assumes it is in
       the Maildir format.

OPTIONS

       close
	   Indicate if the user has any mail also on logout.

       debug
	   Print debug information.

       dir=maildir
	   Look for the users' mail in an alternative location defined by maildir/<login>. The default location for mail is /var/mail/<login>.
	   Note, if the supplied maildir is prefixed by a '~', the directory is interpreted as indicating a file in the user's home directory.

       empty
	   Also print message if user has no mail.

       hash=count
	   Mail directory hash depth. For example, a hashcount of 2 would make the mail file be /var/spool/mail/u/s/user.

       noenv
	   Do not set the MAIL environment variable.

       nopen
	   Don't print any mail information on login. This flag is useful to get the MAIL environment variable set, but to not display any
	   information about it.

       quiet
	   Only report when there is new mail.

       standard
	   Old style "You have..." format which doesn't show the mail spool being used. This also implies "empty".

MODULE TYPES PROVIDED

       The session and auth (on establishment and deletion of credentials) module types are provided.

RETURN VALUES

       PAM_BUF_ERR
	   Memory buffer error.

       PAM_SERVICE_ERR
	   Badly formed arguments.

       PAM_SUCCESS
	   Success.

       PAM_USER_UNKNOWN
	   User not known.

EXAMPLES

       Add the following line to /etc/pam.d/login to indicate that the user has new mail when they login to the system.

	   session  optional  pam_mail.so standard

SEE ALSO

       pam.conf(5), pam.d(5), pam(7)

AUTHOR

       pam_mail was written by Andrew G. Morgan <morgan@kernel.org>.

Linux-PAM Manual						    06/04/2011							       PAM_MAIL(8)

UNIX for Dummies Questions & Answers