Andrew, et al --
...and then Andrew DeFaria said...
%
% On 10/31/2012 11:23 AM, Brian Wilson wrote:
...
% >${1}, ${2}, etc. Also, you may want to read up on the getopts command as a
% >way to process command line arguments.
% Technically, the {}'s are not needed. You can access them with $1, $2,
...
% "/path/to/$1.save/dir" but not "/path/to/$1save/dir" you'd need the {}
% (i.e. "/path/to/${1}save/dir" because otherwise the shell would be
% looking for "1save" as an env variable name.
... except that environment variables cannot begin with numbers :-)
davidtg@madi:~ > cat /tmp/numvars.sh
bash --version
save=x
echo $save
1save=y
echo $1save
echo ${1save}
davidtg@madi:~ > bash -x /tmp/numvars.sh
+ bash --version
GNU bash, version 2.05a.0(1)-release (i386-portbld-freebsd4.6)
Copyright 2001 Free Software Foundation, Inc.
+ save=x
+ echo x
x
+ 1save=y
/tmp/numvars.sh: 1save=y: command not found
+ echo save
save
/tmp/numvars.sh: ${1save}: bad substitution
% --
% Andrew DeFaria <http://defaria.com>
% Fear has its use but cowardice has none. - Mohandas Gandhi
HTH & Happy Hallowe'en
:-D
--
David T-G
See http://justpickone.org/davidtg/email/
See http://justpickone.org/davidtg/tofu.txt
pgpoqybFn78I2.pgp
Description: PGP signature
