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Full Discussion: simple(?) if/else question
Top Forums UNIX for Dummies Questions & Answers simple(?) if/else question Post 302568576 by vgersh99 on Thursday 27th of October 2011 04:47:37 PM
Old 10-27-2011
Quote:
Originally Posted by astropi
Thanks for the quick reply!
Very helpful. Quick follow-up question. I don't know if this matters, but my values are not necessarily integers, and I got this warning:

line 21: [: 5.039814: integer expression expected

I don't know if there is an easy way to deal with this and/or if this is an actual problem or not?
If your shell doesn't support floating point math (not too many do), try this:
Code:

#!/bin/ksh

read a b < temp
if [ "$(echo "if (${a} < ${b}) 1" | bc)" -eq 1 ] ; then
   echo OK
else
   echo NO
fi

 

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print(1)							   User Commands							  print(1)

NAME
print - shell built-in function to output characters to the screen or window SYNOPSIS
ksh print [ -Rnprsu [n]] [arg...] DESCRIPTION
ksh The shell output mechanism. With no flags or with flag - or -, the arguments are printed on standard output as described by echo(1). OPTIONS
The following options are supported: -n suppresses new-line from being added to the output. -R -r (raw mode) ignore the escape conventions of echo. The -R option will print all subsequent arguments and options other than -n. -p causes the arguments to be written onto the pipe of the process spawned with |& instead of standard output. -s causes the arguments to be written onto the history file instead of standard output. -u [ n ] flag can be used to specify a one digit file descriptor unit number n on which the output will be placed. The default is 1. EXIT STATUS
The following exit values are returned: 0 Successful operation. >0 Output file is not open for writing. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
echo(1), ksh(1), attributes(5) SunOS 5.10 15 Apr 1994 print(1)
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