decot@hpisod2.HP.COM (Dave Decot) (05/26/90)
> pyt> cd <wherever_you_want> > pyt> find . -print -exec chown {} \; > > If there are a lot of files to chown, then the following should be MUCH > faster: > > cd <wherever> > find . -print | xargs chown <user> This still invokes chown once per file. The following will be even faster, since it does the files up to 20 per invocation of chown: > find . -print | xargs -n20 chown <user> Dave
arne@yc.estec.nl (Arne Lundberg) (05/28/90)
In article <16710054@hpisod2.HP.COM>, decot@hpisod2.HP.COM (Dave Decot) writes: |>> |>> cd <wherever> |>> find . -print | xargs chown <user> |> |>This still invokes chown once per file. |> |>The following will be even faster, since it does the files up to 20 per |>invocation of chown: |> |>> find . -print | xargs -n20 chown <user> From xargs(1) on or HP-UX 7.0 system: Flags -i, -l, and -n determine how arguments are selected for each command invocation. When none of these flags are coded, the initial-arguments are followed by arguments read continuously from standard input until an internal buffer is full, and then command is executed with the accumulated args. This seems clear enough to me, without options xargs handles *many* files per chown. I can just hope that the internal buffer is bigger than 1 argument :-). Arne Lundberg European Space Technology Centre, Noordwijk, the Netherlands arne@yc.estec.nl or ALUNDBER@ESTEC.BITNET Phone: +31 1719 84865, Fax: +31 1719 12142, Telex: 39098
decot@hpisod2.HP.COM (Dave Decot) (05/31/90)
> |>The following will be even faster, since it does the files up to 20 per > |>invocation of chown: > |> > |>> find . -print | xargs -n20 chown <user> > > From xargs(1) on or HP-UX 7.0 system: > > Flags -i, -l, > and -n determine how arguments are selected for each command > invocation. When none of these flags are coded, the > initial-arguments are followed by arguments read > continuously from standard input until an internal buffer is > full, and then command is executed with the accumulated > args. Yes, you're right. Thanks for the correction. Dave
belkin@teecs.UUCP (Hershel Belkin) (06/08/90)
There is a PD utility called "chall" (available on Interex 9000
contrib tape) which changes user and group ownership for an
entire subtree in one operation ...
eg. chall guest other pathname
will change every file and directory under "pathname" (including
pathname itself) to ownership {guest,other}. I've found it very
useful, as a system administrator (I believe that you must be "root"
to use it, but I might be wrong -- mine is execute root only)
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