Is it possible to prefix the files that are being downloaded? (similar to rsync)
For instance if fruit_banana is being downloaded, it will show as fruit_banana but the transfer is not completed. (It would be nice to prefix it with something to differentiate between completed or not completed files)
Eventually found the answer:
The following extra parameters are needed:
set xfer:use-temp-file yes
set xfer:temp-file-name *.lftp
Related
I want to implement a function which monitor a directory and perform some action when a new file is downloaded from the Internet, but found it difficult to determine if the file is completely downloaded, is there a way to do that?
Usually tools that show the hash of a file will give the state of a file - this should be compared to the hash of another file - if identical then we know the file has downloaded successfully.
md5 (native to bsd) is available - but is only practical on a local file -
If you are retrieving the remote file via HTTP , then there is no way to get the hash of the file without downloading it first (whether it is to STDOUT or piped to file , using wget -O- or curl )
If the file host has a second file that contains the md5 hash of the file being downloaded - then a comparison of the locally downloaded hash is comparable to the hash provided by the file provider.
To do anything more swish will require a comprehensive program to be written - such as the combination of this question and accepted answer :
Python Compare local and remote file MD5 Hash
Besides MD5, there is a simple way to do this:
Partially downloaded file usually has a temporary filename, and it will be renamed to original filename after fully downloaded. You can make your program to ignore or monitor only certain filename extensions.
Oracle's sqlldr defaults to a .dat extension. That I want to override. I don't like to rename the file. When googled get to know few answers to use . like data='fileName.' which is not working. Share your ideas, please.
Error message is fileName.dat is not found.
Sqlloder has default extension for all input files data,log,control...
data= .dat
log= .log
control = .ctl
bad =.bad
PARFILE = .par
But you have to pass filename without apostrophe and dot
sqlloder pass/user#db control=control data=data
sqloader will add extension. control.ctl data.dat
Nevertheless i do not understand why you do not want to specify extension?
You can't, at least in Unix/Linux environments. In Windows you can use the trailing period trick, specifying either INFILE 'filename.' in the control file or DATA=filename. on the command line. WIndows file name handling allows that; you can for instance do DIR filename. at a command prompt and it will list the file with no extension (as will DIR filename). But you can't do that with *nix, from a shell prompt or anywhere else.
You said you don't want to copy or rename the file. Temporarily renaming it might be the simplest solution, but as you may have a reason not to do that even briefly you could instead create a hard or soft link to the file which does have an extension, and use that link as the target instead. You could wrap that in a shell script that takes the file name argument:
# set variable from correct positional parameter; if you pass in the control
# file name or other options, this might not be $1 so adjust as needed
# if the tmeproary file won't be int he same directory, need to be full path
filename=$1
# optionally check file exists, is readable, etc. but overkill for demo
# can also check temporary file does not already exist - stop or remove
# create soft link somewhere it won't impact any other processes
ln -s ${filename} /tmp/${filename##*/}.dat
# run SQL*Loader with soft link as target
sqlldr user/password#db control=file.ctl data=/tmp/${filename##*/}.dat
# clean up
rm -f /tmp/${filename##*/}.dat
You can then call that as:
./scriptfile.sh /path/to/filename
If you can create the link in the same directory then you only need to pass the file, but if it's somewhere else - which may be necessary depending on why renaming isn't an option, and desirable either way - then you need to pass the full path of the data file so the link works. (If the temporary file will be int he same filesystem you could use a hard link, and you wouldn't have to pass the full path then either, but it's still cleaner to do so).
As you haven't shown your current command line options you may have to adjust that to take into account anything else you currently specify there rather than in the control file, particularly which positional argument is actually the data file path.
I have the same issue. I get a monthly download of reference data used in medical application and the 485 downloaded files don't have file extensions (#2gb). Unless I can load without file extensions I have to copy the files with .dat and load from there.
Is it possible to tell ASDF that it should produce only one fas(l) file for entire system? This file should be concatenation (in right order) of all compiled files of the system, including all files of systems on which target system depends.
Yes, with compile-bundle-op (ASDF 3.1): http://common-lisp.net/project/asdf/asdf/Predefined-operations-of-ASDF.html
edit: Actually, monolithic-compile-bundle-op seemes to be asked for (as shown in other answers).
If you have to predict the extension, use uiop:compile-file-type.
And/or you can just call (asdf:output-files 'asdf:monolithic-compile-bundle-op :my-system) to figure out what is actually used.
Option monolithic-compile-bundle-op will create single compiled file which includes all dependencies, while compile-bundle-op creates a file for every system.
Example of use:
(asdf:operate 'asdf:monolithic-compile-bundle-op :my-system)
This command will create file my-system--all-systems.fas(l) in output directory of target project, as well as "bundle" files for every system, named like my-system--system.fas(l).
I've got the following as part of a shell script to copy site files up to a S3 CDN:
for i in "${S3_ASSET_FOLDERS[#]}"; do
s3cmd sync -c /path/to/.s3cfg --recursive --acl-public --no-check-md5 --guess-mime-type --verbose --exclude-from=sync_ignore.txt /path/to/local/${i} s3://my.cdn/path/to/remote/${i}
done
Say S3_ASSET_FOLDERS is:
("one/" "two/")
and say both of those folders contain a file called... "script.js"
and say I've made a change to two/script.js - but not touched one/script.js
running the above command will firstly copy the file from /one/ to the correct location, although I've no idea why it thinks it needs to:
INFO: Sending file
'/path/to/local/one/script.js', please wait...
File
'/path/to/local/one/script.js'
stored as
's3://my.cdn/path/to/remote/one/script.js' (13551
bytes in 0.1 seconds, 168.22 kB/s) [1 of 0]
... and then a remote copy operation for the second folder:
remote copy: two/script.js -> script.js
What's it doing? Why?? Those files aren't even similar. Different modified times, different checksums. No relation.
And I end up with an s3 bucket with two incorrect files in. The file in /two/ that should have been updated, hasn't. And the file in /one/ that shouldn't have changed is now overwritten with the contents of /two/script.js
Clearly I'm doing something bizarrely stupid because I don't see anyone else having the same issue. But I've no idea what??
First of all, try to run it without --no-check-md5 option.
Second, I suggest you to pay attention to directory names, specifically trailing slashes.
s3cmd documentation says:
With directories there is one thing to watch out for – you can either upload the directory and its contents or just the contents. It all depends on how you specify the source.
To upload a directory and keep its name on the remote side specify the source without the trailing slash
On the other hand to upload just the contents, specify the directory it with a trailing slash
I wrote a script that sync several servers at once. One of my problem is that I cannot get LFTP to preserve initial file modification time. So basically, it always upload all the files while only some changed.
Do you know how to force LFTP to preserve file modification time when downloading or uploading?
Thanks for any help.
Korchkidu
On the following page
http://www.bouthors.fr/wiki/doku.php?id=en:linux:synchro_lftp
the authors state:
When uploading, it is not possible to set the date/time on the files uploaded, that's why –>ignore-time is needed.
so if you use the flag combination --only-newer and --ignore-time you can achieve decent backup properties, in such a way that all files that differ in size are replaced. Of course it doesn't help if you really need to rely on time-synchronization but if it is just to perform a regular backup of data, it'll do the job.
try this
from here http://lftp.yar.ru/lftp-man.html:
ftp:use-site-utime (boolean)
when true, lftp sends 5-argument `SITE UTIME' command to set file modification time on
uploaded files. Default is true.
According to man lftp, I found this flag:
ftp:use-mdtm-overloaded (boolean)
when true, lftp uses two argument MDTM command to set file modification time on uploaded files. Default is false.
Thus, I set it to:
set ftp:use-mdtm-overloaded true
and it worked as expected.