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Full Discussion: need help converting string to number for calculation
Top Forums Shell Programming and Scripting need help converting string to number for calculation Post 302114129 by tpatput on Thursday 12th of April 2007 05:25:15 PM
Old 04-12-2007
need help converting string to number for calculation
I've searched the forum and google, but can't see an answer to this simple problem. Here's my small test script:
Code:
#!/bin/csh
echo "enter a number:"
read num
echo "you entered $num"
set num = `expr $num + 1`
echo new value is $num

can someone show me how to do this calculation? note that in the real life script I'm working on, variables will be input, so something like
Code:
set num = 1

won't work for me

here's an example of the execution
Quote:
sh ./test.sh
enter a number:
12
you entered 12
new value is 12
Thanks in advance for your time and help.
Tom
 

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LEARN ABOUT DEBIAN

tcrtest

TCRTEST(1)							   Tokyo Tyrant 							TCRTEST(1)

NAME

       tcrtest - test cases of the remote database API

DESCRIPTION

       The command `tcrtest' is a utility for facility test and performance test.  This command is used in the following format.  `host' specifies
       the host name of the server.  `rnum' specifies the number of iterations.

	      tcrtest write [-port num] [-cnum num] [-tout num] [-nr] [-rnd] host rnum
		     Store records with keys of 8 bytes.  They change as `00000001', `00000002'...
	      tcrtest read [-port num] [-cnum num] [-tout num] [-mul num] [-rnd] host
		     Retrieve all records of the database above.
	      tcrtest remove [-port num] [-cnum num] [-tout num] [-rnd] host
		     Remove all records of the database above.
	      tcrtest rcat [-port num] [-cnum num] [-tout num] [-shl num] [-dai|-dad] [-ext name] [-xlr|-xlg] host rnum
		     Store records with partway duplicated keys using concatenate mode.
	      tcrtest misc [-port num] [-cnum num] [-tout num] host rnum
		     Perform miscellaneous test of various operations.
	      tcrtest wicked [-port num] [-cnum num] [-tout num] host rnum
		     Perform updating operations of list and map selected at random.
	      tcrtest table [-port num] [-cnum num] [-tout num] [-exp num] host rnum
		     Perform miscellaneous test of the table extension.

       Options feature the following.

	      -port num : specify the port number.
	      -cnum num : specify the number of connections.
	      -tout num : specify the timeout of each session in seconds.
	      -nr : use the function `tcrdbputnr' instead of `tcrdbput'.
	      -rnd : select keys at random.
	      -mul num : specify the number of records for the mget command.
	      -shl num : use `tcrdbputshl' and specify the width.
	      -dai : use `tcrdbaddint' instead of `tcrdbputcat'.
	      -dad : use `tcrdbadddouble' instead of `tcrdbputcat'.
	      -ext name : call a script language extension function.
	      -xlr : perform record locking.
	      -xlg : perform global locking.
	      -exp num : specify the lifetime of expiration test.

       If the port number is not more than 0, UNIX domain socket is used and the path of the socket file is specified by the host parameter.  This
       command returns 0 on success, another on failure.

SEE ALSO

       ttserver(1), ttultest(1), ttulmgr(1), tcrmttest(1), tcrmgr(1), ttutil(3), tcrdb(3)

Man Page							    2010-01-20								TCRTEST(1)
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