hi,
how would i go about making a loop which gets each line from a single text file, set it to a variable and then print it to screen?
thanks
eg:
#!/bin/sh
FILE="somefile.txt"
text_line=""
what kind of loop would use here? (18 Replies)
Hi all
Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
I'm improving the way an existing script handles arrays, but the results aren't what I had in mind:
e="Too many consecutive errors... System is probably unstable!"
e="Cancelable Timer Wait Failed!"
for errcd in ${e}
do
echo ${errcd}
done
The for loop interprets the spaces... (2 Replies)
hey guys what im trying to do is do a simple script that will ask for a password and on the 5th time it says access denied if the right password is still not entered this is what i have so far can anyone help me im not good with scripting
thanks in advance
#!/bin/bash
secretname=secret... (2 Replies)
I am struggling with the for loop. I have a file name heros.txt and I would like to go through a list in file where.txt and see if I can find the name from where inside heros.
One of the problems that I am having is I dont understand how to setup the for loop to find the list to search.:wall:
... (6 Replies)
Hi,
I'm trying to put together a small script that will read a txt file that contains a list of two columns. Each column is the name of a folder..
e.g.
AIX Server1
AIX Server2
AIX Server3
$ for i in `cat /opt/apacheprod/scripts/input/copy_list.txt`
do
PLATFORMVAR=`awk ' { print $1 } '... (7 Replies)
I have two files. In file one, there are many columns, but only two of interest to me. Column 1 contains a list of individuals, defined by an ID number. Column 10 contains the diagnosis that each individual has (I am a physician). All together, there are 3000 lines in this file, one line per... (2 Replies)
Hi,
I have a requirement where I have to check for 10 files in Unix location. If all of the files present in that directory then i have execute another process.
can you help me resolving this issue.
sample
location
/home/usr
abc.txt
cde.txt
aaaa.txt
lll.txt
ooo.txt
if all the... (3 Replies)
Hi,
I would really appreciate some help with manipulating a file.
Here is my input file:
SNP_1 : 1 SNP_11 : 1
SNP_2 -0.12 1 SNP_12 -0.3472 1
SNP_3 -0.708 1 SNP_13 0.5037 1
SNP_4 1.492 0.5 SNP_14 -0.0685 1
SNP_5 1.27 0.5 SNP_15 0.547 ... (3 Replies)
Discussion started by: zajtat
3 Replies
LEARN ABOUT REDHAT
pvcreate
PVCREATE(8) System Manager's Manual PVCREATE(8)NAME
pvcreate - initialize a disk or partition for use by LVM
SYNOPSIS
pvcreate [-d|--debug] [-f[f]|--force [--force]] [-y|--yes] [-h|--help] [-v|--verbose] [-V|--version] PhysicalVolume [PhysicalVolume...]
DESCRIPTION
pvcreate initializes PhysicalVolume for later use by the Logical Volume Manager (LVM). Each PhysicalVolume can be a disk partition, whole
disk, meta device, or loopback file. For DOS disk partitions, the partition id must be set to 0x8e using fdisk(8), cfdisk(8), or a equiva-
lent. For whole disk devices only the partition table must be erased, which will effectively destroy all data on that disk. This can be
done by zeroing the first sector with:
dd if=/dev/zero of=PhysicalVolume bs=512 count=1
Continue with vgcreate(8) to create a new volume group on PhysicalVolume, or vgextend(8) to add PhysicalVolume to an existing volume group.
OPTIONS
-d, --debug
Enables additional debugging output (if compiled with DEBUG).
-f, --force
Force the creation without any confirmation. You can not recreate (reinitialize) a physical volume belonging to an existing volume
group. In an emergency you can override this behaviour with -ff. In no case case can you initialize an active physical volume with
this command.
-s, --size
Overrides the size of the physical volume which is normally retrieved. Useful in rare case where this value is wrong. More useful
to fake large physical volumes of up to 2 Terabyes - 1 Kilobyte on smaller devices for testing purposes only where no real access to
data in created logical volumes is needed. If you wish to create the supported maximum, use "pvcreate -s 2147483647k PhysicalVolume
[PhysicalVolume ...]". All other LVM tools will use this size with the exception of lvmdiskscan(8)-y, --yes
Answer yes to all questions.
-h, --help
Print a usage message on standard output and exit successfully.
-v, --verbose
Gives verbose runtime information about pvcreate's activities.
-V, --version
Print the version number on standard output and exit successfully.
Example
Initialize partition #4 on the third SCSI disk and the entire fifth SCSI disk for later use by LVM:
pvcreate /dev/sdc4 /dev/sde
DIAGNOSTICS
pvcreate returns an exit code of 0 for success or > 0 for error:
1 no physical volume on command line
2 error removing existing lvmtab entry for new physical volume
3 error setting up physical volume structure
4 error writing physical volume structure to disk
5 wrong partition type identifier
6 error physical volume name
7 error getting size of physical volume
95 driver/module not in kernel
96 invalid I/O protocol version
97 error locking logical volume manager
98 invalid lvmtab (run vgscan(8))
99 invalid command line
SEE ALSO lvm(8), vgcreate(8), vgextend(8), lvcreate(8), cfdisk(8), fdisk(8), losetup(8), mdadd(8)AUTHOR
Heinz Mauelshagen <Linux-LVM@Sistina.com>
Heinz Mauelshagen LVM TOOLS PVCREATE(8)