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Full Discussion: making shell script
Top Forums Shell Programming and Scripting making shell script Post 302269147 by kaushik02018 on Wednesday 17th of December 2008 01:48:29 AM
Old 12-17-2008
Bug
I made the script

############################################################
#! /bin/sh
export PATH=$PATH:/opt/mysql/bin/
#echo $PATH
echo $LD_LIBRARY_PATH
USER="root"
PASS="qwa"
DB="shell"
DATE=$(date +%d%b%y_%k.%M.%S)
#DATE=`date +%y-%d-%m`
mysqldump -u $USER -p$PASS $DB | gzip -9>/home/backup/today_sme-$DATE.sql.gz
find /home/smebackup -mtime +60 -exec rm -f {} \;
# script to send simple email
# email subject
SUBJECT="live sme database backup"
# Email To ?
EMAIL="xyz@wqs.com"
# Email text/message
EMAILMESSAGE="/tmp/emailmessage.txt"
echo "Backup of shell database is done successfully"> $EMAILMESSAGE
# echo "This is email text" >>$EMAILMESSAGE
# send an email using /bin/mail
/bin/mail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE

echo "done"
############################################################

It does
1=takes backup
2=delete file before 60 days
3=send a mail

But when I channged mysqldump-->sqldymp (just for test purpose) still it send mail "backup done successfully" while mysqldump command doesnot execute

I want If command execute successfully then only mail should be sent How can I do this
 

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LEARN ABOUT DEBIAN

liquidsoap

LIQUIDSOAP(1)						      General Commands Manual						     LIQUIDSOAP(1)

NAME

       liquidsoap - a multimedia streaming language

SYNOPSIS

       liquidsoap [options] [script|expression]

DESCRIPTION

       Liquidsoap  is  a  programming  language for describing multimedia streaming systems.  It is very flexible, making simple things simple but
       giving a lot of control for advanced uses.  Liquidsoap supports audio, video and MIDI streams, and a wide range of  input/output  operators
       including  Icecast and various soundcard APIs.  It can perform a broad range of signal processing, combine streams in various ways, support
       custom transitions, generate sound procedurally...  and all this can be assembled as you wish.  Input files can be  accessed  remotely,	or
       even be synthesized on the fly using external scripts such as speech synthesis.	Finally, interaction with a running liquidsoap instance is
       possible via telnet or socket.

       Liquidsoap scripts passed on the command line will be evaluated: they shall be used to define the streaming system to be ran.  It is possi-
       ble  to pass multiple scripts; they will all be ran successively, and definitions from one script can be used in subsequent ones.  A script
       will be read from standard input if - is given as script filename.  Information about scripting liquidsoap is  available  on  our  website:
       http://savonet.sf.net/

       If  the	parameter is not a file it will be treated as an expression which will be executed. It is a convenient way to test simple one-line
       scripts. When running only one-liners, the default is to log messages directly on stdout rather than to a file.

OPTIONS

       -
	       Read script from standard input.

       --     Stop parsing the command-line and pass subsequent items to the script.

       --debug
	      Print debugging log messages.

       --dynamic-plugins-dir path
	      Directory where to look for plugins.

       --errors-as-warnings
	      Issue warnings instead of fatal errors for unused variables and ignored expressions. If you are not sure about it, it is	better	to
	      not use it.

       --interactive
	      Start an interactive interpreter.

       --list-plugins
	      List all plugins (builtin scripting values, supported formats and protocols).

       --list-plugins-xml
	      List all plugins (builtin scripting values, supported formats and protocols), output as XML.

       --no-pervasives
	      Do not load pervasive script libraries.

       --version
	      Display liquidsoap's version.

       -c, --check
	      Check and evaluate scripts but do not perform any streaming.

       -cl, --check-lib
	      Like --check but treats all scripts and expressions as libraries, so that unused toplevel variables are not reported.

       -d, --daemon
	      Run in daemon mode.

       -f, --force-start
	      For advanced dynamic uses: force liquidsoap to start even when no active source is initially defined.

       -h plugin
	      Print the description of a plugin, eg. a builtin scripting function.

       -i     Display infered types.

       -p, --parse-only
	      Parse scripts but do not type-check and run them.

       -q, --quiet
	      Do not print log messages on standard output.

       -r filename
	      Process a request.

       -T, --disable-telnet
	      Disable the telnet server.

       -U, --disable-unix-socket
	      Disable the unix socket.

       -t, --enable-telnet
	      Enable the telnet server.

       -u, --enable-unix-socket
	      Enable the unix socket.

       -v, --verbose
	      Print log messages on standard output.

       --conf-descr-key key
	      Describe a configuration key.

       --conf-descr
	      Show all configuration keys with their documentation.

       --conf-descr-liqi
	      Show all configuration keys with their documentation in liqi (documentation wiki) format.

       --conf-dump
	      Dump the configuration state

       -help, --help
	      Display this list of options

SEE ALSO

       Our website http://savonet.sf.net/ and the HTML documentation coming with your distribution of liquidsoap.

AUTHOR

       Savonet team <savonet-users@lists.sourceforge.net>

Liquidsoap 1.0.1						   June 25, 2012						     LIQUIDSOAP(1)
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