On 7/13/2008 10:43 AM, William L. Maltby wrote:
> On Sun, 2008-07-13 at 11:21 -0500, Johnny Hughes wrote:
>> OR ...
>>
>> yum remove `cat result`
>
> The winner! And if running a modern bash
>
> yum remove $(cat result)
Interesting. According to the bash man page `command` and $(command)
are slightly different (in regards to backslashes). I always assumed
they were identical in every way.
========================
Command Substitution
Command substitution allows the output of a command to replace the
command name. There are two forms:
$(command)
or
‘command‘
Bash performs the expansion by executing command and replacing the
command substitution with the standard output of the command, with
any trailing newlines deleted.
...
*When the old-style backquote form of substitution is used, backslash
retains its literal meaning except when followed by $, ‘, or \.* The
first backquote not preceded by a backslash terminates the command
substitution. When using the $(command) form, all characters between
the parentheses make up the command; none are treated specially.
========================
Kenneth