03-01-2011
First, do not use variables already in use by UNIX or your shell, use MY_NAMES_FOR_SURE !
Using a var as a file seems silly for this situation, and might not take a big output robustly, but why store when you can flow; why not just put around all "( ... ) >>log_file 2>&1" and let them inherit stdout/stderr ? "2>&1" is a good idea, so the outputs stay together in the log in original time order.
Using PPK passwordless login, and you would not need expect. That is more secure than passwords in scripts, as well as simpler to invoke.
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LASTLOG(8) LASTLOG(8)
NAME
lastlog - examine lastlog file
SYNOPSIS
lastlog [options]
DESCRIPTION
lastlog formats and prints the contents of the last login log /var/log/lastlog file. The
login-name, port, and last login time will be printed. The default (no flags) causes lastlog entries to be printed, sorted by their order
in /etc/passwd.
OPTIONS
The options which apply to the lastlog command are:
-h, --help
Print help message and exit.
-t, --time DAYS
Print the lastlog records more recent than DAYS.
-u, --user LOGIN
Print the lastlog record for user with specified LOGIN only.
The -t flag overrides the use of -u.
If the user has never logged in the message
**Never logged in** will be displayed instead of the port and time.
NOTE
The lastlog file is a database which contains info on the last login of each user. You should not rotate it. It is a sparse file, so its
size on the disk is much smaller than the one shown by ls -l (which can indicate a really big file if you have a high UID). You can display
its real size with ls -s.
FILES
/var/log/lastlog
lastlog logging file
CAVEATS
Large gaps in uid numbers will cause the lastlog program to run longer with no output to the screen (i.e. if mmdf=800 and last uid=170,
program will appear to hang as it processes uid 171-799).
AUTHORS
Julianne Frances Haugh (jockgrrl@ix.netcom.com)
Phillip Street
08/10/2005 LASTLOG(8)