[CentOS-docs] Suggestions on "I Need the Kernel Source" Wiki pages
amyagi at gmail.com
Sun Jul 13 04:11:10 UTC 2008
On Sat, Jul 12, 2008 at 9:03 PM, Scott Robbins <scottro at nyc.rr.com> wrote:
> On Sat, Jul 12, 2008 at 08:39:46PM -0700, Akemi Yagi wrote:
>> They are "back ticks" :-) This is one of those things that might be
>> regarded as Unix/Linux basics (?). It feeds the output of the command
>> inside the ticks to the shell. In your case, `uname -m` produces i686
>> which then will be used as the parameter for the --target= option.
> This confuses many newcomers (and old timers with bad vision if they're
> not paying attention.)
> Is there any merit to substituting that with $(). (To the OP, original
> poster, both the back ticks, to the left of the numeral 1 on a QWERTY
> keyboard and putting something inside $(), e.g., $(uname -m) mean to
> execute a command.
> I write many pages for the beginner. As that was a common error when
> people would read my pages, I then began making a point of explaining
> what they were. Finally, I decided that simply using $() was easier
> than adding a sentence or two specifying that those were backticks. :)
There is one (minor) problem with using the $() notation. That is, it
does not work in *cough* csh. I said "minor" because (t)csh users are
minority. Anyway, back ticks work regardless of the shell used.
P.S. Please do not start the shell war (or c-shell bashing). OK, Evolution?
More information about the CentOS-docs