Recursion with grep?
jerrymc at clunix.cl.msu.edu
Thu Nov 13 15:15:27 PST 2003
> --- Matthew Hunt <mph at astro.caltech.edu> wrote:
> > On Thu, Nov 13, 2003 at 05:37:39PM -0500, Francisco Reyes wrote:
> > > The man page for grep says to use "-r" to recurse, yet when I try
> > > something like
> > >
> > > grep -r -li string *.c
> > >
> > > I get no files. However, if I go into one of the subdirectories and do
> > a
> > > plain grep <string> *.c then <string> is found on several files.
> > When using "-r", the arguments to grep should be directories. It will
> > process all of the files in the given directories, recursively. There
> > is
> > no provision for searching a subset of the files (i.e. "*.c). If you
> > need to do that, use find and xargs.
> You can also do this with something like:
> ls -laR | egrep *.c
Not as elegant maybe, but you can also do something like
ls -li string *.c
ls -li string */*.c
ls -li string */*/*.c
Using the shells uparrow to repeat the command makes that easy
if you only have a few directory levels to peruse.
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