thank you for the great replies. so this is how i think it should go. the logic is there i suppose but the syntax is way off. i'm trying to create this script to work under any conditions (in any directory) and not tamper with anything but. so, i threw in a little regex, and even that is probably off, but it's to help me sleep at night. how does this look to you guys?
Hi,
I was wondering if there was a way to append something to filenames based on a wildcard. For example, if I have the following files in a directory:
blah1
blah2
blah3
blah4
blah5
I want to rename these all to:
blah1.txt
blah2.txt
blah3.txt
blah4.txt
blah5.txt
Is there a... (4 Replies)
HIya,
Having a dumb day whilst writing an archive process in Shell want to extract from the filename the date and archive into tar files based on this, I don't want to use mtime as it may not be the actual file date.
The files are
-rw-rw---- 1 user admin 100 Aug 29 11:10... (2 Replies)
The files below are essentially “lookup files” used in a series of scripts that run through the look up files and grab the correct Group Name and File Type and then unless I have the file name specified will replace the variable with the corresponding group name when processing the files before... (1 Reply)
Hi I'm very new to this script thing, so please be gentle.
I am trying to get a command - the mach2qtl command in the code below - to loop through a set of files.
Each command should take the same two .dat and .ped files, but the .mlinfo and .mlprob files with filenames including 'chrom1' ... (7 Replies)
I'm trying to search all .odt files in a directory for a string in the text of the file.
I've found a bash script that works, except that it can't handle whitespace in the filenames.
#!/bin/bash
if ; then
echo "Usage: searchodt searchterm"
exit 1
fi
for file in $(ls *.odt); do
... (4 Replies)
I have a txt file as database. when i run my program what it does is it ask me for 3 name and stored in the file as
name1:name2:name3:1
when u enter 3 name it add those in file as above format and add 1 at the end. I what i want is if i enter same names again it changes that 1 to 2 and so... (3 Replies)
Is firefox changing the filename of this hidden file for anyone else? I tried in firefox 3, 4, and 6. They all got changed when I tried when I downloaded the file. Firefox removed the leading dot that makes the file be hidden.
MEGAUPLOAD - The leading online storage and file delivery service (2 Replies)
Hi all,
I want to generate output files in a loop, run the same command on the same input file 1000 times and output in files with a new name each time, maybe a number appended to it. The output will be different each time as I`m sampling randomly from the input file.
I want to do the... (3 Replies)
Hi,
I would like to write a loop to change the names of files in a directory. The files are called data1.txt through data1000.txt. I'd like to change their names to a1.txt through a1000.txt. How do I go about doing that? Thanks! (2 Replies)
Daily stupid question. I want to increment the file name everytime the script is run. So for example if the filename is manager.log and I run the script, I want the next sequence to be manager.log1. So to be clear I only want it to increment when the script is executed. So
./script... (10 Replies)
Discussion started by: metallica1973
10 Replies
LEARN ABOUT SUSE
losetup
LOSETUP(8) MAINTENANCE COMMANDS LOSETUP(8)NAME
losetup - set up and control loop devices
SYNOPSIS
Get info:
losetup loopdev
losetup -a
losetup -j file [-o offset]
Delete loop:
losetup -d loopdev...
Print name of first unused loop device:
losetup -f
Setup loop device:
losetup [{-e|-E} encryption] [-o offset] [--sizelimit limit]
[-p pfd] [-r] {-f[--show]|loopdev} file
Resize loop device:
losetup -c loopdev
DESCRIPTION
losetup is used to associate loop devices with regular files or block devices, to detach loop devices and to query the status of a loop
device. If only the loopdev argument is given, the status of the corresponding loop device is shown.
Encryption
It is possible to specify transfer functions (for encryption/decryption or other purposes) using one of the -E and -e options. There are
two mechanisms to specify the desired encryption: by number and by name. If an encryption is specified by number then one has to make sure
that the Linux kernel knows about the encryption with that number, probably by patching the kernel. Standard numbers that are always
present are 0 (no encryption) and 1 (XOR encryption). When the cryptoloop module is loaded (or compiled in), it uses number 18. This
cryptoloop module will take the name of an arbitrary encryption type and find the module that knows how to perform that encryption.
OPTIONS -a, --all
show status of all loop devices
-c, --set-capacity loopdev
force loop driver to reread size of the file associated with the specified loop device
-d, --detach loopdev...
detach the file or device associated with the specified loop device(s)
-e, -E, --encryption encryption_type
enable data encryption with specified name or number
-f, --find
find the first unused loop device. If a file argument is present, use this device. Otherwise, print its name
-h, --help
print help
-H, --phash hash_type
Specify the password hash function. Valid values are: sha512(default), sha256, sha384, rmd160, none.
-j, --associated file
show status of all loop devices associated with given file
-k, --keybits num
set the number of bits to use in key to num.
-o, --offset offset
the data start is moved offset bytes into the specified file or device
--sizelimit limit
the data end is set to no more than sizelimit bytes after the data start
-p, --pass-fd num
read the passphrase from file descriptor with number num instead of from the terminal
-r, --read-only
setup read-only loop device
--show print device name if the -f option and a file argument are present.
The short form of this option (-s) is deprecated. This short form could be in collision with Loop-AES implementation where the same
option is used for --sizelimit.
-v, --verbose
verbose mode
RETURN VALUE
losetup returns 0 on success, nonzero on failure. When losetup displays the status of a loop device, it returns 1 if the device is not con-
figured and 2 if an error occurred which prevented losetup from determining the status of the device.
FILES
/dev/loop0, /dev/loop1, ... loop devices (major=7)
EXAMPLE
If you are using the loadable module you must have the module loaded first with the command
# modprobe loop
Maybe also encryption modules are needed.
# modprobe des # modprobe cryptoloop
The following commands can be used as an example of using the loop device.
# dd if=/dev/zero of=/file bs=1k count=100
# losetup -e des /dev/loop0 /file
Password:
Init (up to 16 hex digits):
# mkfs -t ext2 /dev/loop0 100
# mount -t ext2 /dev/loop0 /mnt
...
# umount /dev/loop0
# losetup -d /dev/loop0
If you are using the loadable module you may remove the module with the command
# rmmod loop
RESTRICTION
DES encryption is painfully slow. On the other hand, XOR is terribly weak. Both are insecure nowadays. Some ciphers may require a licence
for you to be allowed to use them.
Cryptoloop is deprecated in favor of dm-crypt. For more details see cryptsetup(8).
AVAILABILITY
The losetup command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
Linux 2003-07-01 LOSETUP(8)