03-12-2020
Quote:
Originally Posted by
DanilOnTheSky
It worked, can you explain a little bit why?
Regards,
The caret sign (
^)means that the expression only matches text at the beginning of the line.
There already had be a space at the end.
These two measures make that a partial match will not work.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I want to list all files created in a day but it doesn't work
$ day=\'`date "+%b %d"`\'
$ echo $day
>>> 'Mar 12'
$ ll |grep $day
>>> can't open 12'
????? please help me (3 Replies)
Discussion started by: Medhi
3 Replies
2. UNIX for Advanced & Expert Users
I am doing "ps -f" to see my process.
but I get lines that one of it represents the ps command itself.
I want to grep it out using -v flag, but than I get another process that belongs to the GREP itself :
I would like to exclude
# ps -f
UID PID PPID C STIME TTY TIME CMD... (2 Replies)
Discussion started by: yamsin789
2 Replies
3. UNIX for Advanced & Expert Users
I want to search pattern in between two words in a file
so how to write query by using grep command??
Also want to get two words.. (2 Replies)
Discussion started by: ksr.test
2 Replies
4. UNIX for Advanced & Expert Users
In my file contains special characters,alphanumerics all thease characters
how to search the pattern between two strings that contains special characters
Ex: find pattern between allocation_map_128*2 to creative.clicks_allocate != KNULL
so there are special characters in my... (1 Reply)
Discussion started by: ksr.test
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I am new to UNIX environment, to find a contents from a given files i have used the command "grep -l "<search word>" *.txt, it is given the file names which contains that particular word, but it is anyway to get entire details of the file .., i need the output like ls -ltr, filename... (3 Replies)
Discussion started by: subrahmaniank
3 Replies
6. UNIX for Dummies Questions & Answers
Hi guys, i wondering with any1 could help me with this.
I have this script will i need to "grep" an integer form a file x2. If the value is 0 then it's ok. But anything greater then 0, i'll ask the script to echo an error message. This is how the script looks like:
MESSAGEFILE=x2
STRING="0"
... (5 Replies)
Discussion started by: hanyou.lin
5 Replies
7. Shell Programming and Scripting
i want to search in the current directory all the files that contain one word for example "hello"
i want to achieve it with the grep command but not with the grep * (2 Replies)
Discussion started by: aintour
2 Replies
8. Shell Programming and Scripting
Hi, im taking an entry Unix class, and as part of my lab assignment I have to copy all files in the /home/david/lab3 directory that have the file extension .save to your lab3/temp directory. I'm having trouble getting the grep to do anything worth while
I've been trying to do:
cp... (6 Replies)
Discussion started by: Critical jeff
6 Replies
9. Shell Programming and Scripting
I have one text file, contains some values like <Q1:Name>1000000</Q1:Name>. I want to read the values and stores into an array for searching the each values into a file locations.
If I use this
find location |xargs grep -l "<Q1:Location>100000055042</Q1:Location>",I get the files, are having... (7 Replies)
Discussion started by: arindam guha
7 Replies
10. Shell Programming and Scripting
Hello,
I am running below command as root user
#nodetool cfstats tests | grep "Memtable switch count"
Memtable switch count: 12
Where as when I try to run same command as another user it gives different result.
#su -l zabbix -s /bin/bash -c "nodetool cfstats tests | grep "Memtable switch... (10 Replies)
Discussion started by: Pushpraj
10 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)