Date: Thu, 2 Jun 2011 00:59:29 -0400 From: Jason Hellenthal <jhell@DataIX.net> To: Eitan Adler <lists@eitanadler.com> Cc: freebsd-bugs@freebsd.org Subject: Re: misc/157491: update ls/rm/mv/cp tools to be able to handle large amount of files Message-ID: <20110602045929.GB3103@DataIX.net> In-Reply-To: <201106011200.p51C0X0o012189@freefall.freebsd.org> References: <201106011200.p51C0X0o012189@freefall.freebsd.org>
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--NDin8bjvE/0mNLFQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jun 01, 2011 at 12:00:33PM +0000, Eitan Adler wrote: > The following reply was made to PR misc/157491; it has been noted by GNAT= S. >=20 > From: Eitan Adler <lists@eitanadler.com> > To: bug-followup@freebsd.org, vermaden@interia.pl > Cc: =20 > Subject: Re: misc/157491: update ls/rm/mv/cp tools to be able to handle l= arge > amount of files > Date: Wed, 1 Jun 2011 11:59:36 +0000 >=20 > The limit is not in these tools. It is a constant number, defined in > bytes, in the kernel. This is designed to keep the amount of memory > required to store these command line options bounded. > You could see the value with > $getconf ARG_MAX > 262144 > =20 > I suggest you use find + xargs which automatically will figure out the > correct number of arguments and run the command for you. > =20 Even using your shell to do this will yield better results than trying to pass every file as an argument. Knowledge of how the shell works in this manner can be learned from the manual and through some scripting guides out there on the net "somewhere". While find is just as sufficient, here is another example that will use just the tools you mentioned. mkdir -p /usr/obj/tmp_m for file in /var/db/portsnap/files/*; do cp -v $file /usr/obj/tmp_m done This is probably one of the most commonly used shell scripting examples. Large things can be done here. Good Luck. --=20 "Unity can only be manifested by the Binary. Unity itself and the idea of U= nity are already two." -- Buddha Regards, (jhell) Jason Hellenthal --NDin8bjvE/0mNLFQ Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (FreeBSD) Comment: http://bit.ly/0x89D8547E iQEcBAEBAgAGBQJN5xiwAAoJEJBXh4mJ2FR+gAkIAKBw5gJxfekj5XBhL+pll21c entucnMPlR3dEqemMWbnOyRFK659lzi05kN2hBddn1YYUfBUwcnaiXnmmO+i1QIG 224ynFMigtNMWQqRwLNXz7V7cLVQs5bG3DnF3Ym7bBOZqMZuzma3fMHm+awuu2A4 JF9oiqMxaBOBRKhewr02S4nSDf+lbC4hHiP5wLs+8uTZhCogibd4DA7inrS+K+gK uBZeCjXpk6NnZpNoU2R3fEe39mFmJkQYrr5X7qlojprpVs7zJEEXpIEV++KCjff0 RB6l23hEDtydZeSfu45nnaP5mC+ka8FPl55mqSyYMJI+D/ChKRYbbmZFtB6/1Xo= =AEUf -----END PGP SIGNATURE----- --NDin8bjvE/0mNLFQ--
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