Hello,
When I run following script
#!/bin/bash
cd ~/directory1
mv `ls -trF | grep -v / | tail -10 ` ~/directory2
works fine with filenames not having any space but runs into issues with filenames that have spaces tried with $file variable still doesnot work. Can someone help me (4 Replies)
Hi
I am having difficulty copying files from one dir to another due to a space in the names of the file with an extension .rtf
There are a group of files and the command am using is
cp `ls -rt /wlblive/home/whiops/ops/RTFs/*.rtf|head -20` /wlblive/home/jamshed
Since the files are... (3 Replies)
Hi all,
I've been tangoing with this one for a couple of days now and I'm still not making any progress.
Basically I'm trying to match three numbers in a string from a text file with matching numbers in a jpeg, and then copying the results to another folder.
Data looks like this:
Model:... (4 Replies)
Hi,
I have files with filenames as below.
SGM Daily Sales Email-en-us-05312012.xlwa
I want to rename it in .xls. I am writing a script to change this, as there can be multiple files in subfolders.
I have the following script.
#!/bin/ksh
for oldfile in $(find... (1 Reply)
Hi,
Anyone can help me on how to list the file with spaces? Like I want to "ls" only the 2008 files.
2008 _overview102.jpg
2008 _overview103.jpg
2008 _overview106.jpg
2008 _overview677.jpg
2008 _overview680.jpg
2008 _overview110.jpg
2008 _overview682.jpg
2009 _overview4373.jpg
2009... (1 Reply)
Hi,
I have a list of filenames in the format with Spaces in the filename.
As an example :
Sample File 1.txt
Sample File 2.txt
Sample File 3.txt.....I have about 100 files like this.
I am trying to create a block of code or use an available command to a) Create a file b) Put in some... (2 Replies)
For the record, I already tried telling mgmt and the users to disallow spaces in filenames for this script, but it isn't happening for a number of ID10T-error-based reasons.
I have simple list of 3 files in a directory that are named like this:
bash-3.2$ ls -1 file*
file1
file1 part2... (2 Replies)
Requirement:
I need to ls all files based on date timestamp after a trigger file
In the below example, I need to pull only files uploaded after orders.bmk by date timestamp ascending.
ORDERS_0000000009877468.txt
ORDERS_0000000009877464.txt
ORDERS_0000000009877460.txt... (9 Replies)
I am writing a code that can move and archve all the files in a directory except the latest file based on file pattern provided in a controlfile.
The filename is in the form of pattern. So basically we find the all the files of the pattern provided and archive all of them, leaving one latest file.... (3 Replies)
I wish to list only files along with the absolute path in a given directory on my AiX 6.1 system.
Below is the best I could do.
ls -p "/app/scripts"/*
This gives a a list of all filename along with folder names with absolute path non-recurrsive (without listing files in sub-directories)... (1 Reply)
Discussion started by: mohtashims
1 Replies
LEARN ABOUT BSD
raw
RAW(8) System Administration RAW(8)NAME
raw - bind a Linux raw character device
SYNOPSIS
raw /dev/raw/raw<N> <major> <minor>
raw /dev/raw/raw<N> /dev/<blockdev>
raw -q /dev/raw/raw<N>
raw -qa
DESCRIPTION
raw is used to bind a Linux raw character device to a block device. Any block device may be used: at the time of binding, the device
driver does not even have to be accessible (it may be loaded on demand as a kernel module later).
raw is used in two modes: it either sets raw device bindings, or it queries existing bindings. When setting a raw device, /dev/raw/raw<N>
is the device name of an existing raw device node in the filesystem. The block device to which it is to be bound can be specified either
in terms of its major and minor device numbers, or as a path name /dev/<blockdev> to an existing block device file.
The bindings already in existence can be queried with the -q option, which is used either with a raw device filename to query that one
device, or with the -a option to query all bound raw devices.
Unbinding can be done by specifying major and minor 0.
Once bound to a block device, a raw device can be opened, read and written, just like the block device it is bound to. However, the raw
device does not behave exactly like the block device. In particular, access to the raw device bypasses the kernel's block buffer cache
entirely: all I/O is done directly to and from the address space of the process performing the I/O. If the underlying block device driver
can support DMA, then no data copying at all is required to complete the I/O.
Because raw I/O involves direct hardware access to a process's memory, a few extra restrictions must be observed. All I/Os must be cor-
rectly aligned in memory and on disk: they must start at a sector offset on disk, they must be an exact number of sectors long, and the
data buffer in virtual memory must also be aligned to a multiple of the sector size. The sector size is 512 bytes for most devices.
OPTIONS -q, --query
Set query mode. raw will query an existing binding instead of setting a new one.
-a, --all
With -q , specify that all bound raw devices should be queried.
-h, --help
Display help text and exit.
-V, --version
Display version information and exit.
BUGS
The Linux dd(1) command should be used without the bs= option, or the blocksize needs to be a multiple of the sector size of the device
(512 bytes usually), otherwise it will fail with "Invalid Argument" messages (EINVAL).
Raw I/O devices do not maintain cache coherency with the Linux block device buffer cache. If you use raw I/O to overwrite data already in
the buffer cache, the buffer cache will no longer correspond to the contents of the actual storage device underneath. This is deliberate,
but is regarded either a bug or a feature depending on who you ask!
NOTES
Rather than using raw devices applications should prefer open(2) devices, such as /dev/sda1, with the O_DIRECT flag.
AUTHOR
Stephen Tweedie (sct@redhat.com)
AVAILABILITY
The raw command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux August 1999 RAW(8)