General :: Bash Variable Naming The Server - Monitor Trunk Failure?
May 30, 2010
I'm writing a script for asterisk to monitor trunk failure, i do a loop for every trunk it got nad would like to name variable like server1=, server2= naming the server upgoing as the trunk is. here is the scripts:
[Code]....
what i would like to do is name the variable server, username and status with the count variable, like this server$COUNT to have server1 when on trunk one, bu as soon as i add the $COUNT after the server, it seems to try to make it a command, it says that:
Code:
./test.sh: line 45: server1=74.63.41.218: command not found
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Dec 8, 2009
On one of my servers I see this when I log in. What does this mean and how can I get it to go away? Everything seems to work fine, but none of my other machines give this error.
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Apr 26, 2010
I am not parsing on a webserver so is it possible to have both
#! /usr/bin/php &
#!/bin/bash
in the same script? Alternatively, I have a current bash script that I need to get some variables from mysql and not sure how to get mysql results in bash:
Quote:
mysql -h server.net -u username1 -paaa -e "USE squid; SELECT email, usern FROM TABLE WHERE blah blah;"
emailadd="resultfrom above"
usern="resultfromabove"
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Mar 1, 2011
As you can see on the output of the script, the two 'testing echoes' I do at the end don't print anything.That's the point, I do NEED this array further in my script.I'd understand my "param" var is local to the for, but is the other one too ? I tried to use "declare -a file" before the for, but i get same exact result !
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Aug 21, 2009
I'm trying to read content of file to variable and use this variable in for loop. The problem is, when I have c++ comment style in file - /*. Spaces in line are also interpreted as separated lines.
For example:
Code:
Changing $files to "$files" eliminate these problems but causes that whole content of variable is treated as one string (one execution of loop).
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Jun 10, 2009
I have a text file i that has a mailTo: NAME in it. In a bash script i need to extract NAME and put it in a $variable to use. How do i do this?
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Mar 21, 2011
I've a script that it's invoked with n-variable parameters. Here's an examples:
Code:
./myprogram.sh inputdir FIELD1 FIELD2 ... FIELDN outputfile In the script I would like to get the FIELD names that were passed.
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Mar 21, 2011
Assume that i a having the following three lines in an executable file
#/bin/bash
a=Tue
Tue=1
When i give echo $a the value should be 1, how to do this.
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Aug 22, 2010
I'm basically setting up two sshfs mounts and I have it set up so I run one command but type my password twice.Is there an easy to way to input a password using bash and pass that variable to another process asking for a password?
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May 10, 2011
I want to create a variable that when passed as a parameter to another bash script will keep its string quotes (so it stays as one parameter). What ways can I achieve this cleanly?
Code:
john@ubuntu:/usr/local/src$ cat foo.sh
#!/bin/bash
echo $0
[code]....
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Apr 7, 2011
In my script, and I would like to concatenate 2 variables names, to give me the true variable.I've 3 variables X1, X2 and X3, and I invoked them inside a for loop.
Code:
#!/bin/bash
X1=HELLO
[code]....
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Mar 21, 2011
I know that cat can output the file, but how do you store that output in a variable to process:
Code:
CONTENT=cat file.txt
This doesn't seem to work?
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Mar 17, 2010
i am dealing with this problemI have a function
function Une {
...
return $some_variable
[code]...
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Apr 9, 2011
I have a hard time with my bash script.
It forget global variable's value.
First look at my script.
Code:
Echo "PKGS is [$PKGS] in after loop"
And data file for it is below. Let's name as list.txt
Code:
As you see, PKGS variable in loop has correct value.
However, after loop I can not get proper value for it.
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Feb 18, 2010
When I run this command from shell, it runs ok
export REVS=`svn info svn+ssh://svn.myone.ca/var/svn/story/trunk/lib |grep 'Last Changed Rev:'| awk -F: '{print $2}'`
However when I save it into a file called test.sh (of course, I chmod it with +x), I got error "export: 2: bad variable name"
Here is the file:
#!/bin/bash
export REVS=`svn info svn+ssh://svn.myone.ca/var/svn/story/trunk/lib |grep 'Last Changed Rev:'| awk -F: '{print $2}'`
I am using ubuntu.
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Nov 17, 2010
Quote:
#!/bin/sh
for i in {1..10}
do
for j in {1..50}
[code]....
The first echo generates something like: abc.de.fgh The second echo generates:
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Feb 9, 2011
I do this:
Code:
a@b:~$ export A=hi
a@b:~$ echo $A
hi
a@b:~$ bash -c "export A=blah; echo $A"
hi
a@b:~$
Why doesn't the bash command print the new value of $A? Is there a way to make it do so?
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Aug 6, 2011
I have a file (.tmpfile) and inside it is a string which i only know part of, the rest being a random group of characters... I would like to know how to pull the whole string out of the file and into a variable.
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Nov 26, 2008
I have a config file that contains:
my.config:
Code:
Now in my bash script, I want to get the output /home/user instead of $HOME once read. So far, I have managed to get the $HOME variable but I can't get it to echo the variable. All I get is the output $HOME.
Here is my parse_cmd script:
Code:
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Jan 31, 2010
(variable substitution?)
(parameter expansion?)
Code:
run_repeatedly()
{
NUM=0
while [ <irrelevant stuff here> ]
[Code]....
run_repeatedly "programX -o "./messy/path/output-$NUM.txt"" The echo inside the loop prints "...-$NUM.txt"; obviously I'm aiming to have bash substitute the iteration number so that I end up with many output files not 1.
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Aug 2, 2009
Ive been using linux for a while but I am just getting into shell scripting, im currently trying to get a simple script for finding and copying files powered by the command:
Code:
This works fine from the command line but when put in a script such as:
Code:
Code:
with the keyboard inputs for $fc1 and $fc2 being *.doc and ~/test respectivly. The only problem i can see is the xargs -ivar "var" part possibly needing $var to be defined?
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May 4, 2010
I am attempting to write a very basic script that monitors a server's load and automatically emails an administrator upon the load reaching a certain threshold...
1.) `uptime | awk -F ' ' {'print $10'} | cut -d ',' -f1 | awk -F '.' {'print $1'}` -- the output from this command results in a decimal figure, so when that value is parsed and placed in an if statement, the value is not seen as a number. load-monitor.sh: line 9: [: 4.96: integer expression expected/How can I allow a number like "4.56" to be seen as an actual number within the if statement and be compared to 4, for instance?
2.) I am running a cPanel server on CentOS 5.4 -- when I run mail -s "SUBJECT" $EMAILADDRESS the command just hangs, and stracing the process shows it stuck on a read syscall.
3.) If I wanted to write this script in PHP, I have one primary confusion -- how can I mimic the functionality of obtaining the output from uptime via awk, etc. so that I can determine what the server load is at a given time? Which PHP function(s) would assist in that regard?
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Mar 5, 2011
In my company we are hosting web applications from our server Using Apache and Apache Tomcat. Is it possible to write "Bash script to Monitor The entire URL's " I have basic ideas in bash script..
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May 12, 2010
Need help on how the scsi and multipathing works in Linux. From the docs i have read, i understand that by the use of multipathing we can assign multiple paths to a SAN partition. If there is a problem then one path will failover to other path.However, i am not clear on how linux recognizes the SAN partitions using the multipath drivers. For e.g. I have a HP Proliant server on which we have the following mounts:
Filesystem Size Used Avail Use% Mounted on
/dev/cciss/c0d0p3 59G 11G 46G 20% /
/dev/cciss/c0d0p1 494M 27M 443M 6% /boot
[code]...
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Mar 12, 2011
i have a centos 5.5 server running tomcat,oracle xe,apache etc..i would like to be able my windows machine to access this server by name, and not ip, for example have http://backserv:7080 for oracle xe web admin and so on..i know one way is DNS, but if i install oracle on a windows machine in peer-to-peer network, i can allready access with by it's name. o i'm guessing i should do something with samba, wins or something like that.never mind i got now for the REAL complex stuff of insalling web sphere 7 without user interface (need to look for a response file).
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Dec 18, 2009
I am using a QLA2462 and have got FC storage attached through a brocade switch. As soon when I add more storage for this server on this switch my device naming shifts and this new storage comes in between e.g. as sdb, and the other 2 go to sdc and sdd. I looked around but I can't find a good solution for SuSe 11.2.
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Nov 25, 2010
I have a problem defining persistent device naming on a Debian Lenny server.I have:RAID1 controller on the server machine with two SCSI disks.external storage with RAID5. I have / mount on the first partition on the server SCSI disk and /storage mount on the external storage. I'm experiencing a problem: The system recognizes the system disk (RAID 1), as sda or sdb randomly.I want: To control the recognition, and tell the system that sda (sda1) will always be the system disk.The motivation: GRUB is configured to work with sda, and when the system disk doesn't, boot process fails, and I end up in the initramfs shell-like interface.
Code:
Booting the kernel
.
.
.
mount:mounting /dev on /root/dev failed: No such file or directory
mount:mounting /sys on /root/sys failed: No such file or directory
[code]....
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Mar 11, 2011
Is it possible to assign an "here documents" section to a variable in bash?I would like to assign the following to a variable:
Code:
<html>
<body>
<p>THis is a test</p>
</body>
</html>
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Jan 16, 2010
i'm not actually using Linux but i figured this might be the right place nonetheless..o i've got this little script file to compile and run some Java code:
Code:
#!/bin/bash
cd /Users/acid/Desktop/javaTest
[code]...
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Mar 28, 2010
I'm making a script I want to be able to just call (ie, rclick instead of ./rclick) where do I put it?
~/bin?
/bin?
/usr/bin?
Also, how do I pass a variable to the script (rclick 10 will rightclick 10 times) (Found, so simple... $1)Lastly, can I force it to run on CPU2? CPU1 is completley locked up if I run this on it... Or can I make it use less cpu cycles?
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