To save all of the variables in the MATLAB workspace except for certain specified variable names, use a regular expression such as the following:
>> save test -regexp ^(?!(variableToExclude1|variableToExclude2)$).
or in the functional form
>> save(fname,'-regexp','^(?!(variableToExclude1|variableToExclude2)$). ')
Note that the period at the end of the regular expression is necessary. The following example demonstrates how this can be used to save all variables except for 'a' and 'd'.
>> clear;
>> a = 3; b = 4; c = 5; d = 6;
>> save test -regexp ^(?!(a|d)$).
>> clear;
>> load test;
Or in the functional form,
>> save('test', '-regexp', '^(?!(a|d)$).')
Additionally, if the name of the variable to exclude is available as a string, the following syntax can be used:
>> avoidVariable = 'a';
>> save('test', '-regexp', ['^(?!', avoidVariable,'$).'])
