[magick-users] loop to make 300 images

[Fred Weinhaus]

Thanks for the link. I will have to look into it. In the mean time, 
the installed Mac OSX 10.4x seems to be way behind.

bash --version
GNU bash, version 2.05b.0(1)-release (powerpc-apple-darwin8.0)
Copyright (C) 2002 Free Software Foundation, Inc.



>  > Note that the following looping constructs do not work on the Mac.
>>
>>    for i in `seq 1 300`; do
>>  ...
>>  done
>>
>>  There is no seq command on the Mac OS
>
>I wonder why they die not include that. If one wants it anyway, it is part
>of the GNU coreutils, which can be downloaded from
><http://www.gnu.org/software/coreutils/>. After compiling, the sed binary
>can be copied to somewhere in the $PATH.
>
>>  for i in {1..300}; do
>>  ...
>>  done
>
>This works for bash >= 3.2. "bash --version" or "echo $BASH_VERSION"
>prints the version.
>
>
>>  The only ones that i have found that work on Mac OS are
>>
>>  i=1
>>  while [ $i -le 300 ]; do
>>  ...
>>  i=`expr $i + 1`
>>  done
>
>bash can understand arithmetic statements in (( )) brackets, so [ $i -le
>300 ] can also be written as (( i < 300 )). And i=`expr $1 + 1` can be
>i=$(( i + 1 )) or simply (( i++ )).
>
>
>The thread looks a little off-topic, but on the other hand a powerful tool
>like imagemagic can be made even more powerful with a little knowledge of
>shell scripting. In case someone got interested, I suggest the Advanced
>Bash Scripting Guide at <http://tldp.org/LDP/abs/html/>.
>
>	Wonko