Leanest way to send an email from bash Post: 302910127

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Top Forums Shell Programming and Scripting Leanest way to send an email from bash Post 302910127 by mph on Tuesday 22nd of July 2014 02:35:53 PM

07-22-2014

Registered User

For this type of script I would use expect. If you're connecting to an email host that either not too close or, has a bad connection. The sleep statements might not work to well.

Using autoexpect to create the skeleton for communications with the email server would ensure that you wait for a response. It's also very configurable as far as what you can do if the server doesn't respond as expected. I. E. the mail server responds that your recipient doesn't exist, etc...

Here's a the script autoexpect generated from a command line connection. Note that the scripts generally work route off the hop. Some "massaging" needs to be done. Also, I remove almost ALL the -exact to take into account variations on responses.

Code:

set timeout -1
spawn $env(SHELL)
match_max 100000
expect -exact "# "
send -- "telnet localhost 25\r"
expect -exact "telnet localhost 25\r
Trying 127.0.0.1...\r\r
Connected to localhost.\r\r
Escape character is '^\]'.\r\r
220 Laptop ESMTP Postfix\r
"
send -- "ehlo localhost\r"
expect -exact "ehlo localhost\r
250-Laptop\r
250-PIPELINING\r
250-SIZE 10240000\r
250-VRFY\r
250-ETRN\r
250-ENHANCEDSTATUSCODES\r
250-8BITMIME\r
250 DSN\r
"
send -- "mail from: me@mydomain.com\r"
expect -exact "mail from me@mydomain.com\r
250 2.1.0 Ok\r
"
send -- "rcpt to: you@yourdomain.com\r"
expect -exact "rcpt to: you@yourdomain.com\r
250 2.1.5 Ok\r
"
send -- "data\r"
expect -exact "data\r
354 End data with <CR><LF>.<CR><LF>\r
"
send -- "Subject: Testing again\r"
expect -exact "Subject: Testing again\r
"
send -- "\r"
expect -exact "\r
"
send -- "This is a test. only Only a test.\r
"
send -- "\r"
expect -exact "\r
"
send -- ".\r"
expect -exact ".\r
250 2.0.0 Ok: queued as EA2CCD202EA\r
"
send -- "quit\r"
expect -exact "quit\r
221 2.0.0 Bye\r
Connection closed by foreign host.\r\r
# "
send -- "^C"
expect -exact "\r
# "
send -- "^D"
expect eof

----------------------------------------------------
Forgot to mention. To make things much easier, you can use variables for the input(send).

Just 2� worth of a thought.

Last edited by mph; 07-22-2014 at 03:43 PM.. Reason: Additional thought

mph

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send-uucp

SEND-UUCP(8)						      System Manager's Manual						      SEND-UUCP(8)

NAME

       send-uucp, send-nntp, send-ihave - send Usenet articles to remote site

SYNOPSIS

       { send-nntp | send-uucp | send-ihave } [ -d ] sitename:hostname | sitename [ sitename:hostname | sitename ..  ]

DESCRIPTION

       The send-* utilities are scripts that process the batch files written by innd(8) to send Usenet articles to a remote NNTP or UUCP site.

       The sites to be fed may be specified by giving sitename hostname pairs on the command line.

       The sitename is the label the site has in the newsfeeds file, the hostname is the real hostname of the remote site, a FQDN (Fully Qualified
       Domain Name) in the case of an NNTP host, or the UUCP name in the case of a UUCP host.  Normally, the sitename and  the	hostname  are  the
       same, and as such don't have to be specified as sitename:hostname pairs but just as a sitename.

       send-uucp compresses batches of news and sends the to the remote site with uux.

       send-nntp Starts an innxmit to send the articles to the remote site.

       send-ihave  encapsulates  the articles in an ihave control message and uses inews to send the articles to a to.sitename pseudo-group. Using
       send-ihave is discouraged, nobody uses it anymore and even the author of this manpage is unsure as to how it  actually  works  or  used	to
       work.

       send-*  expect  that  the batchfile for a site is named <pathoutgoing in inn.conf>/sitename.  To prevent batchfile corruption, shlock(1) is
       used to ``lock'' these files.

OPTIONS

       -d     The ``-d'' flag causes nntpsend to send output to stdout rather than the log file <pathlog in inn.conf>/<program-name>.log.

NOTES

       You should probably not use send-nntp, but innfeed, or if that is not possible, nntpsend.

       The usual flags in the newsfeed file to write a batch file suitable for processing by send-uucp are Tf,Wfb .

       The usual flags for a batch file for send-nntp are Tf,Wfm

SEE ALSO

       newsfeeds(5), nntpsend(8)

																      SEND-UUCP(8)