Hi,
Actually i have written one test.sh (shell program) in bash.
Here i have a variables $a which stored the value package1.
Now I want to write a regular expression inside the if command that "if $a variable contains letter p in the begining of the value package1 then it is coming true.... (5 Replies)
I'm pretty sure I already know the answer to this, but I want to make sure I'm not overlooking anything. I'm working on a log monitoring script and every 10 lines I want to display a summary of events. The thing is, there are a lot of possible events, that likely won't have happened, so I only want... (0 Replies)
hi,
I have written a script to search MAC address in a given directory.
MAC address would be in format XX.XX.XX.XX.
The digits contain hexadecimal numbers.
For this i have used grep as follows.
grep -rn '^\{1,2\}\.\{1,2\}\.\{1,2\}\.\{1,2\}\$' *
This is not working as required.... (17 Replies)
Just started learning bash ,and I am confused with sintaksis
line 16: syntax error near unexpected token `else'
thanks
#!/bin/bash
echo -n "Enter: "
read num
if(($(echo ${#num}) == 0 ))
then
echo No arguments passed.Try again
elif
rem=$(echo $num | tr -d )
... (7 Replies)
Hi,
How to use values in one for loop to other for loop.
say "$sf_rel" variable has values "2011/W2 2011/G2" I want to use these values in inner for loop to process properly.
$branch variable has G2 and 6
What is happening is outer for loop $i has 2011/W2 it is entering into inner... (3 Replies)
I'm would to create a script that would give me the results below.
Please note the spaces in the log file are actually commas(",".)
Log file Data
0:00 21:15 899 43 31 12 25.39
0:00 21:20 736 34 19 15 35.39
0:00 21:20 776 41 28 13 ... (3 Replies)
Hi,
i want to check if a variable var1 is not a or b or c
pseudo code:
If NOT (var1 = a or var1 = b or var1 = c)
then
...
fi
I want to use POSIX complaint Korn shell, and for string comparison
For the following code, logical.sh
#!/usr/bin/ksh
var="j"
echo "Var : $var"
if ! { || ||... (12 Replies)
# check host value regex='^(||1|2|25)(\.(||1|2|25)){3}$' if ')" != "" ]; then if ]; then echo host $host not found exit 4 fi elif ]; then echo $host is an invalid host address exit 5 fi
espeacailly the top regex part?
---------- Post updated at 06:58 PM ---------- Previous update was... (1 Reply)
Folks - newbie bash coder here and I'd like to get your help to make the code below work. As you can see, I was trying to count the total number of lines with the 3rd value >= 15 in a file and wanted to make the threshold "15" configurable, but apparently the $THRESHOLD value was not populated... (3 Replies)
I am using the following nested loop
for i in {1..3}
do
for y in {1..3}
do
if ;
then
echo P0${i}R${y}.fas
mv P0${i}R${y}.fas P${i}R${y}.fas
read -t 5
fi
done
done
I was wondering if I can use a character such as * or ? instead of my second variable y. I tried R in... (3 Replies)
Discussion started by: Xterra
3 Replies
LEARN ABOUT NETBSD
lvdisplay
LVDISPLAY(8) System Manager's Manual LVDISPLAY(8)NAME
lvdisplay - display attributes of a logical volume
SYNOPSIS
lvdisplay [-c|--colon] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--maps] [-P|--partial] [-v|--verbose] LogicalVolumePath [Logi-
calVolumePath...]
DESCRIPTION
lvdisplay allows you to see the attributes of a logical volume like size, read/write status, snapshot information etc.
lvs (8) is an alternative that provides the same information in the style of ps (1). lvs is recommended over lvdisplay.
OPTIONS
See lvm for common options.
-c, --colon
Generate colon separated output for easier parsing in scripts or programs. N.B. lvs (8) provides considerably more control over the
output.
The values are:
* logical volume name
* volume group name
* logical volume access
* logical volume status
* internal logical volume number
* open count of logical volume
* logical volume size in sectors
* current logical extents associated to logical volume
* allocated logical extents of logical volume
* allocation policy of logical volume
* read ahead sectors of logical volume
* major device number of logical volume
* minor device number of logical volume
-m, --maps
Display the mapping of logical extents to physical volumes and physical extents.
Examples
"lvdisplay -v /dev/vg00/lvol2" shows attributes of that logical volume. If snapshot logical volumes have been created for this original
logical volume, this command shows a list of all snapshot logical volumes and their status (active or inactive) as well.
"lvdisplay /dev/vg00/snapshot" shows the attributes of this snapshot logical volume and also which original logical volume it is associated
with.
SEE ALSO lvm(8), lvcreate(8), lvscan(8)Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) LVDISPLAY(8)