sign, however, unexpected things can happen. Consider
<code>
a=12345678
echo ${a:-4}
</code>
int... test" echo ${foo%%t*is}
NOTE
While the # and % identifiers may not seem obvious, they have a convenient mnemonic. The # key is on the left side of the $ key on the keyboard and operates from t... s defined.
The first two of these operators are ideal for setting defaults for command-line argument
