mechanism (see below). basename is less efficient than ${variable##/*} because it runs in its own separate process rather than within the shell. Another utility, dirname(1), do... understand that these use shell "globbing" rather than "regular expressions" to match these patterns. Na... ally just take a whole different approach. Rather than trying to use cp to make a backup of each file un... o run faster with less overhead and may be easier than some of the more complex sorts of pipes and comma
if [ "$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>
--
