Email Alert in UNIX Post: 302993369

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Top Forums UNIX for Beginners Questions & Answers Email Alert in UNIX Post 302993369 by drysdalk on Thursday 9th of March 2017 08:34:41 AM

03-09-2017

Registered User

Hi,

I've had to hard-code the variables in this example of course, but something like this should work.

Code:

$ cat script.sh 
#!/bin/bash
duplicate_user_list="rod jane freddy"
duplicate_user_count=3

if [ "$duplicate_user_count" -gt "0" ]
then
        echo "Duplicate users found, mailing you the details"
        echo "$duplicate_user_list" | mail -s "Details of duplicate users" unixforum@localhost
        exit 1
else
        echo "No duplicate users found"
        exit 0
fi

$ ./script.sh 
Duplicate users found, mailing you the details
$ mail
"/var/mail/unixforum": 1 message 1 new
>N   1 unixforum@localhost Thu Mar  9 13:30  15/667   Details of duplicate users
? 1
<Some headers redacted for privacy reasons>
Subject: Details of duplicate users
To: <unixforum@localhost>
X-Mailer: mail (GNU Mailutils 2.99.99)

rod jane freddy
? d 1
? q
Held 0 messages in /var/mail/unixforum
$

Hope this helps.

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LEARN ABOUT DEBIAN

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a file name containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)