9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'm trying to exclude 'BACKUP', 'STORE', 'LOGGER' folders while searching for all files under a directory "/tmp/moht"
Once a file is found I wish to display the filename, the size of the file & the cksum value.
Below is the command, I'm using:
/opt/freeware/bin/find /tmp/moht -type d -name... (6 Replies)
Discussion started by: mohtashims
6 Replies
2. Shell Programming and Scripting
I am required to create a CSV file reading last 200000 lines form a log file. I have to grep 3 parameters from this log file and write these parameters in the .csv file, with time stamp. This script will be setup in a cron job which will run every 10 minutes. I have written the script but it is... (5 Replies)
Discussion started by: Crazy_Nix
5 Replies
3. Shell Programming and Scripting
I'm using sed to do find and replace. But since the file is huge and i have more than 1000 files to be searched, the script is taking a lot of time. Can somebody help me with a better sed command. Below is the details.
Input:
1
1
2
3
3
4
5
5
Here I know the file is sorted.
... (4 Replies)
Discussion started by: gpaulose
4 Replies
4. Filesystems, Disks and Memory
Hello,
i have a a1000 connected to an e6500. There's a raid 10 (12 disks) on the a1000.
If i do a
dd if=/dev/zero of=/mnt/1 bs=1024k count=1000
and then look at iostat it tells me there's a kw/s of 25000.
But if i do a
dd of=/dev/zero if=/mnt/1 bs=1024k count=1000
then i see only a... (1 Reply)
Discussion started by: mbrenner
1 Replies
5. Shell Programming and Scripting
Hi,
I have sort command that sorts in ramdisk created by a script 'mktd' and later unmounted by script 'rmtd'. The platform is AIX.
# code
sudo -E mktd 44 # create ramdisk of size 44GB
sort ... -k1,1 -2,2 ... # sort a file using the ramdisk on keys 1 and 2
sudo -E rmtd # unmount... (1 Reply)
Discussion started by: ChicagoBlues
1 Replies
6. Shell Programming and Scripting
I am trying to mount the ramdisk for sorting, and i get the message "ramdisk already defined." What exactly is /dev/ramdisk0 and is it safe to remove it?
# command
sudo -S mktd 60 <<EOF
initiate
EOF
# block of code for mktd
...
&& {
print "ramdisk already defined."
... (1 Reply)
Discussion started by: ChicagoBlues
1 Replies
7. Shell Programming and Scripting
I have written a code using AWK & sed to compare two files.
The structure of the files is like this"
Format is this:
<bit code> <file code> <string>
Follwoed by any numbers of properties lines whic start with a "space"
10101010101111101 XX abcd a
AS sasa
BS kkk
1110000101010110 XX... (1 Reply)
Discussion started by: sandeep_hi
1 Replies
8. Shell Programming and Scripting
Hi all,
I wanted to make a ramdisk for a opensolaris distro.
I have very little idea of how to create it?
can anyone pls help me out?
Is there any tutorial on creating it on the net???
Also can i make changes to the actual os itself by changing the scripts involved in ramdisk then use it to... (1 Reply)
Discussion started by: wrapster
1 Replies
9. Shell Programming and Scripting
Hi All,
I am trying to read output from a command. The output format is as follows:
Thursday 13 Mar 2008 Information
This is sample text
Friday 14 Mar 2008 Warning
This is one more sample text
First line contains informtation (date etc) and the 2nd line contains some information.
... (3 Replies)
Discussion started by: ssunda6
3 Replies
ramdisk(7D) Devices ramdisk(7D)
NAME
ramdisk - RAM disk device driver
SYNOPSIS
ramdisk@0:diskname
DESCRIPTION
The ramdisk driver supports numerous ramdisk devices that are created by the system during the boot process (see boot(1M)) or during nor-
mal system operation (see ramdiskadm(1M) for more information).
DEVICE SPECIAL FILES
Each ramdisk can be accessed either as a block device or as a raw device. When accessed as a block device, the normal buffering
mechanism is used when reading from and writing to the device, without regard to physical disk records. Accessing the ramdisk as a raw
device enables direct transmission between the disk and the read or write buffer. A single read or write call usually results in a single
I/O operation, meaning that raw I/O is more efficient when many bytes are transmitted. You can find block files names in /dev/ramdisk. Raw
file names are found in /dev/rramdisk.
There are no alignment or length restrictions on I/O requests to either block or character devices.
ERRORS
EFAULT The argument features a bad address.
EINVAL Invalid argument. EIO. An I/O error occurred.
EPERM Cannot create or delete a ramdisk without write permission on /dev/ramdiskctl.
ENOTTY The device does not support the requested ioctl function.
ENXIO The device did not exist during opening.
EBUSY Cannot exclusively open /dev/ramdiskctl. One or more ramdisks are still open.
EEXIST A ramdisk with the indicated name already exists.
EAGAIN Cannot allocate resource for ramdisk. Try again later.
FILES
/dev/ramdisk/diskname
Block device for ramdisk named diskname.
/dev/rramdisk/diskname
Raw device for ramdisk name diskname
/kernel/drv/ramdisk
32-bit driver
/kernel/drv/ramdisk.conf
Driver configuration file. (Do not alter).
/kernel/drv/sparcv9/ramdisk
64-bit driver
ATTRIBUTES
See attributes(5) for descriptions of the following attribute:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
ramdiskadm(1M), fsck(1M), fstyp(1M), mount(1M), newfs(1M), driver.conf(4), filesystem(5), dkio(7I)
NOTES
The percentage of available physical memory that can be allocated to ramdisks is constrained by the variable rd_percent_physmem. You can
tune the rd_percent_physmem variable in /etc/system. By default, the percentage of available physical memory that can be allocated to
ramdisks is fixed at 25%.
A ramdisk may not be the best possible use of system memory. Accordingly, use ramdisks only when absolutely necessary.
SunOS 5.11 04 Mar 2003 ramdisk(7D)
