few problems/differences i’ve noticed after upgrade of debian.
bash vs dash
by default new debian symlinks /bin/sh to dash shell instead of bash as in lenny. in turn some of my [lousy] scripts broke. few examples:
#!/bin/sh cat > b <<<" a b c"
when /bin/sh points to bash just works, when it’s dash:
/a: 2: Syntax error: redirection unexpected
other example:
#!/bin/sh
counter='a'
if [ $counter == "tsearch" ] || [ $counter == "dsearch" ] ; then
echo 'x'
fi
will work fine with bash, but under dash will result with:
[: 6: a: unexpected operator [: 6: a: unexpected operator
solution? write better code or change shebang to point to /bin/bash
list of other problems that might occur
suhosin.get.max_value_length defaults to 512
which means that any values passed by GET and longer than 512 chars will not be passed to $_REQUEST and $_GET vars.
it seems that in lenny there was no such limitation at all.
someone else noticed this problem too
solution – start using post or increase the limit.
mysql login truncation
this is actually related to upgrade from mysql 5.0 to mysql 5.1.
description can be found here.
solution – reconfigure application that talks to mysql to use truncated login.