used, an `offset' that evaluates to a number less than zero counts back from the end of the expanded val... mechanism (see below). basename is less efficient than ${variable##/*} because it runs in its own separate process rather than within the shell. Another utility, dirname(1), do... titution which tells us that $foo is really a shorthand for ${foo} which is really the simplest case of
if [ "$a" -ne "$b" ]</code>
----
-gt
is greater than
<code> if [ "$a" -gt "$b" ]</code>
----
-ge
is greater than or equal to
<code>if [ "$a" -ge "$b" ]</code>
----
-lt
is less than
<code>if [ "$a" -lt "$b" ]</code>
----
-le
is less than or equal to
<code>if [ "$a" -le "$b" ]</code>
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