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Full Discussion: Switching user
Top Forums UNIX for Dummies Questions & Answers Switching user Post 302215761 by incredible on Thursday 17th of July 2008 06:48:17 AM
Old 07-17-2008
#!/bin/sh
HOST='something.else.com'
USER='yourid'
PASSWD='yourpw'
FILE='file.txt'

ftp -n $HOST <<END_SCRIPT
quote USER $USER
quote PASS $PASSWD
put $FILE
quit
END_SCRIPT
exit 0

Linux, Unix and BSD users have the alternative of using a .netrc file. The ftp man page documents the format of .netrc. To accomplish the task of using ftp in a shell script you would have to fill out a .netrc file something like this:


machine something.else.com
login myid
password mypassword

ftp demands that .netrc not have group or world read or write permissions:


$ ls -l .netrc
-rw------- 1 bediger users 51 Dec 16 13:30 .netrc

Using a .netrc file has a few problems that may or may not prevent you from using it.

A shell scripkt that does FTP using .netrc is no longer self-contained. You have to keep track of two files, which means that bugs can be less than obvious.
ftp reads it's user ID's .netrc. If you develop your script under a given user ID, then put it in production under a second user ID, you have to coordinate .netrc file contents between those two user IDs.
 

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MAILGRAPH(8)						      System Manager's Manual						      MAILGRAPH(8)

NAME
mailgraph - daemon which produces graphs of SMTP traffic SYNOPSIS
mailgraph [ options ] DESCRIPTION
mailgraph is a daemon which produces mail statistics RRDtool for Postfix and Sendmail. This stats are stored for generating daily, weekly, monthly and yearly graphs of sent/received/rejected and bounced/viruses/spam mails. OPTIONS
-h, --help Display help and exit. -v, --verbose Be verbose about what you do. -V, --version Output version information and exit. -c, --cat Cause the logfile to be only read and not monitored. -l, --logfile file Monitor logfile file instead of /var/log/syslog. -t, --logtype type Set logfile's type (default: syslog). -y, --year Start year of the log file (default: current year). --host=HOST Use only entries for HOST (regexp) in syslog. -d, --daemon Start in the background --daemon-pid=FILE Write PID to FILE instead of /var/run/mailgraph.pid. --daemon-rrd=DIR Write RRDs to DIR instead of /var/lib/mailgraph/. --daemon-log=FILE Write verbose-log to FILE instead of /var/log/mailgraph.log. --ignore-localhost Ignore mail to/from localhost (used for virus scanner). --ignore-host=HOST Ignore mail to/from HOST (used for virus scanner). --no-mail-rrd Do not update the mail rrd. --no-virus-rrd Do not update the virus rrd. --no-greylist-rrd Do not update the greylist rrd. --rrd-name=NAME Use NAME.rrd, NAME_virus.rrd and NAME_greylist.rrd for the rrd files. --rbl-is-spam Count rbl rejects as spam. --virbl-is-virus Count virbl rejects as viruses. SEE ALSO
rrdtool(1), RRDs(3pm) AUTHOR
David Schweikert <dws@ee.ethz.ch> MAILGRAPH(8)
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