Nope, unless I missed what you trying to get at.
#!/bin/bash
if [$1 == '']; then
echo ''
echo "format is $0 'math equation'"
echo "i.e. $0 (2+2)*3"
echo ''
exit
fi
echo $1 | /usr/bin/bc -l 2>&1 /dev/null
Here is the output
./math "2 + 3 *( 5 - 3 )" <---command
./math: [2: command not found
8
On Wed, 11 Dec 2002, Francisco Neira wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> dbrett wrote:
> | I have a bash to math calucations. It works but also complains about the
> | last line, even though it works.
> |
> | Any ideas how to fix the problem or at least not see the error message and
> | still work.
> |
> | #!/bin/bash
> |
> | if [$1 == '']; then
> | echo ''
> | echo "format is $0 'math equation'"
> | echo "i.e. $0 (2+2)*3"
> | echo ''
> | exit
> | fi
> |
> | echo $1 | /usr/bin/bc -l &2>/dev/null
> |
> | unfortunately '&2>/dev/null has an additional problem.
> |
> | david
> |
> |
> |
> |
> |
>
> And 2>&1 /dev/null works?
>
>
> - --
> Francisco Neira B. /~\ The ASCII
> Administrador de Red \ / Ribbon Campaign
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> Lima, Peru, -05:00 UTC / \ HTML Email
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>
>
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