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Full Discussion: If condition issue
Top Forums UNIX for Dummies Questions & Answers If condition issue Post 302489820 by methyl on Friday 21st of January 2011 06:01:57 PM
Old 01-21-2011
Belt and braces (and good commercial script technique). Let's change the name of the variable and use braces everywhere. Also make sure we have a space character after "[" and another space character before "]" ... and use a text comparision "=" (not a numeric comparision "-eq") .

Code:
#!/bin/sh
chris1="rerun"
chris2="${1}"

echo "chris1=${chris1}"
echo "chris2=${chris2}"

if [ "${chris1}" = "${chris2}" ]
then
        echo "RERUN"
else
         echo "NOT RERUN"
fi

./test.sh
chris1=rerun
chris2=
NOT RERUN

./test.sh rerun
chris1=rerun
chris2=rerun
RERUN

 

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LEARN ABOUT DEBIAN

bping

BPING(1)							  BP executables							  BPING(1)

NAME

       bping - Send and receive Bundle Protocol echo bundles.

SYNOPSIS

       bping [-c count] [-i interval] [-p priority] [-q wait] [-r flags] [-t ttl] srcEID destEID [reporttoEID]

DESCRIPTION

       bping sends bundles from srcEID to destEID.  If the destEID echoes the bundles back (for instance, it is a bpecho endpoint), bping will
       print the round-trip time.  When complete, bping will print statistics before exiting.  It is very similar to ping, except it works with
       the bundle protocol.

       bping terminates when one of the following happens: it receives the SIGINT signal (Ctrl+C), it receives responses to all of the bundles it
       sent, or it has sent all count of its bundles and waited wait seconds.

EXIT STATUS

       These exit statuses are taken from ping.

       0   bping has terminated normally, and received responses to all the packets it sent.

       1   bping has terminated normally, but it did not receive responses to all the packets it sent.

       2   bping has terminated due to an error.  Details should be noted in the ion.log log file.

FILES

       No configuration files are needed.

ENVIRONMENT

       No environment variables apply.

DIAGNOSTICS

       Diagnostic messages produced by bping are written to the ION log file ion.log and printed to standard error.  Diagnostic messages that
       don't cause bping to terminate indicate a failure parsing an echo response bundle.  This means that destEID isn't an echo endpoint: it's
       responding with some other bundle message of an unexpected format.

       Can't attach to BP.
	   bpadmin has not yet initialized Bundle Protocol operations.

       Can't open own endpoint.
	   Another application has already opened ownEndpointId.  Terminate that application and rerun.

       bping bundle reception failed.
	   BP system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

       No space for ZCO extent.
	   ION system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

       Can't create ZCO.
	   ION system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

       bping can't send echo bundle.
	   BP system error.  Check for earlier diagnostic messages describing the cause of the error; correct problem and rerun.

BUGS

       Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>

SEE ALSO

       bpecho(1), bptrace(1), bpadmin(1), bp(3), ping(8)

perl v5.14.2							    2012-05-25								  BPING(1)
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