If you have a billion files in a directory, anything you try to do accessing a file in that directory is going to take a LONG time. In this case you have to read the directory twice for each file found that is less than 48 hours old. You said you're copying files, but there is nothing in the command line you listed that will copy anything. The command line you gave will search for groups of names of files that have been modified within the last 48 hours and then read the directory again for each group to print the names of those files.
The time needed to run this pipeline would probably be cut in half (while producing the same results except that the order in which the files are printed may be different) if you used the command:
instead of the command:
Note that if a lot of files have been changed in the last two days, neither of these will give you a sorted list of the files that have changed.
Note also that if any filenames in the file hierarchy rooted in the current directory contain a space, tab, or newline character, the command you have using xargs will fail, and the output from the replacement command I suggested may be ambiguous.
I need to copy about 13 Tb of data from one directory and subdirectories to the other (another mount point). If I run this as a cron, say between 10 pm and 7 am, not all of the files will be copied over. Is there a way of 'resuming' the copy the following evenings until all files are copied over? (0 Replies)
Hi
when copy the files from one directory to another as like below,it is tried to copy *. as a file.
cp /home/rha/*.
My objective is to copy all the files (don't care about case sensitive),
Thanks in advance for your valuable reply. (1 Reply)
Hi Everybody,
I am Unable to view files in a particular directory under /opt. But, when I reboot the server, I am able to view the files.. Its happening daily. Do u 've n e answers/suggestions.
Kindly help..
:confused: (1 Reply)
Hi Everybody,
I am Unable to view files in a particular directory under /opt. But, when I reboot the server, I am able to view the files.. Its happening daily. Do u 've n e answers/suggestions.
Kindly help..
:eek: (1 Reply)
Iam in the process of copying a directory with thousands of directories and files into a new directory.
I need to preserve permissions, owner, group, date and timestamps, everything.
Iam using AIX and would need help of writing the command whether it is cp-RP or cpio.
Apprecaite your... (3 Replies)
Dear All,
Again I have another simple question. :confused:
I want to write a csh which can copy all files of a current directory with a new name in the same directory, I mean:
If I have tree bird apple as files in a directory I want to give ,say number 007 as argument to my csh and it copies... (3 Replies)
I have a folder will a lot of documents (pdf, xls, doc etc.) which users have uploaded but only 20% of them are currently linking from my html files. So my goal is to copy only the files which are linked in my html files from my Document directory into another directory.
Eg: My documents exist... (5 Replies)
How to copy files from one directory to another directory with the subfolders copied.
If i have folder1/sub1/sub2/* it needs to copy files to folder2/sub1/sub2/*.
I do not want to create sub folders in folder2.
Can copy command create them automatically?
I tried cp -a and cp -R but did... (4 Replies)
Hi
I need to copy a huge directory with thousands of files onto another directory but without *.WMV files (and without *.wmv - perhaps we need to use *.).
Pls advise how can I do that.
Thanks (17 Replies)
Hi have a system running solaris with a mount point running 58% capacity used, but unfortunately when I type ls -lrtin a specific directory, it returns: ls: Not enough space. I suspect there are millions of files in this directory.
So what I did is to create a script like this:
touch -mt... (13 Replies)
Discussion started by: fretagi
13 Replies
LEARN ABOUT SUSE
ncopy
NCOPY(1) ncopy NCOPY(1)NAME
ncopy - NetWare file copy
SYNOPSIS
ncopy -V
ncopy [ -vmMnpptu ] [ -s amount ] file destinationfile|directory
ncopy [ -vmMnpptu ] [ -s amount ] file1 [ file2 ... ] directory
ncopy -r [ -vmMnpptu ] [ -s amount ] srcdir dstdir
DESCRIPTION
With ncopy you can copy files to different locations on a single NetWare file server without generating excess network traffic. The pro-
gram uses a NetWare function to do the copy rather than transferring the file across the network for both the read and write.
If the last argument is a directory, ncopy will copy the source file(s) into the directory. If only two files are given and the last argu-
ment is not a directory, it will copy the source file to the destination file.
If the source and destination files are not on the same NetWare server (or are not on NetWare servers at all), ncopy will do a normal file
copy.
OPTIONS -V
Show version number and exit
-v
Verbose copy. Will show current file and percentage completion.
-m
Copy MAC resource fork. Copies MAC resource fork together with data fork.
-M
Copy MAC resource fork to/from non-MAC filesystem. It expects/creates resource forks in subdirectory .rsrc of each directory copied.
If you want to copy files from MAC volume to .rsrc scheme, you must specify both options, -mM. It is not possible to create .rsrc direc-
tory on MAC-aware volume in one step, you must first copy data to non-MAC media using ncopy -mM and then copy them back using ncopy -M.
If you want to copy files from .rsrc scheme on MAC volume to real MAC multiple-forks file, you must first copy data to non-MAC filesys-
tem using ncopy -M and then copy them back using ncopy -mM.
-n
Nice NetWare copy. Will sleep for a second between copying blocks on the NetWare server. Gives other people a chance to do some work
on the NetWare server when you are copying large files. This has no effect if you are not copying on a NetWare server.
-s amount
Nice time slice factor. Used in conjunction with the -n option, this specifies the number of 100K blocks to copy before sleeping.
Default is 10. (1 Megabyte)
-p
Preserve file attributes and date/time during copy.
-pp
Preserve file attributes, date/time and owner during copy. Name of owner is preserved, not owner ID.
-t
Preserve trustees during copy. Trustee name is preserved, not ID.
-r
Perform recursive copy.
-u
Perform copy only if mtime or size differs.
BUGS
ncopy does not preserve long (MAC, NFS, FTAM, OS2) names during copy.
SEE ALSO ncpmount(8), ncpumount(8)CREDITS
ncopy was written by Brian G. Reid (breid@tim.com) and Tom C. Henderson (thenderson@tim.com). Many thanks to Volker Lendecke
(lendecke@math.uni-goettingen.de) for the ncpfs and ncplib which made ncopy possible. Some further work was done by Petr Vandrovec (van-
drove@vc.cvut.cz).
ncopy 17/03/1996 NCOPY(1)