General :: Setting Up Variables (in RDGEN)
Jan 17, 2010
I have installed RDGEN which comes with VPFIT package. When I run the program it says:
"Failed to find help file"
But I ran the program from its main directory where all the files including help files exist. I think maybe the problem is because of this that THEY say:
"Some environment variables should be set before starting RDGEN".
But I do not know what does this mean and how to do that.
These are the variables:
-ATOMDIR
-RD PRSETUP
-RD PRSETUP
-RDSTART
-VPFSETUP
-VPFPLOTS
Would it be possible for you to tell me what does Setting Variable means in this case?
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Aug 23, 2010
Is there a way I can write a file that contains the text which assigns variables, e.g. string="hello world" in a file say, variables.txt and have a shell script assign those variables locally e.g.
#!bin/bash
command_that_saves_variables_locally variables.txt
echo $string
and when I run the script I would get an output of
"hello world"
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Sep 4, 2010
I am running an application which requires setting environment variables to be set.At the moment, the way I am achieving this is by exporting the EV at the command line, and then running the app from the command line.I want to be able to run the app from my menu (it is already a menu item after I installed it).How may I set the env var so that it is always available, so I can just run the app from the menu instead of from the CLI?
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Aug 25, 2011
I was using the command export, but it looks that after some time the set variables disappears. What is the easiest way of setting an environment variable forever?
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Jul 12, 2010
I'm running into a problem when I try to set a variable to an awk output in c-shell. Right now my command is Code: set STR_MSG_TYPE = `awk -F{ '/msg_type/ {print $2}' <filename> | tr -d }'/''*' ` I then run echo to see what the output is and it returns blank, however, when I run the same awk command from the command line, I get an actual output of "MT-715". Am I setting my variable incorrectly? I do something similar using the date command to set a STR_DATE variable earlier in the code and it works fine and I use the same syntax.
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Jul 4, 2011
I always have to google about setting environment path variables when I install new software. My basic problem is that I dont know whether these variables need to be set globally or not. I have read a number of mails/tutorials which say that Environment variables should be set by simply doing an export ..eg EDITOR=nano export EDITOR
additionally I have read that it should be written into /etc/bash.bashrc
But are these really global variables or local? I want the variables to be set
even after I have logged out.
so I could also write the variable here...
/etc/environment
or here
/etc/profile
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Aug 6, 2010
I installed Java on a server and anytime I have to start or stop a service that requires the $JAVA_HOME variable I have to manually set it with the export command such as: Code: export JAVA_HOME=/usr/java-jdk1.6.0_21 How can I permanently set this variable?
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May 10, 2010
I have an RHEL 5 server joined to a windows domain. However I wanted to add variable lines to be executed each time a user logs in. However I succeeded to put them in /etc/bashrc file and it worked like a charm.
But its annoying that everytime the user logs in to the shell remotely it displays the whole variables that were declared. Is there a way how to add them once and not to display the output each time the user logs in?
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Apr 6, 2011
mkvmerge -o <filename without extension>_TV.mkv -S <filename> && mkvextract tracks <filename> 3:<filename without extension>.*** && perl /home/brian/Desktop/ass2srt.pl <filename without extension>.*** && rm <filename without extension>.***
Doing these commands for multiple command line file inputs is the goal. So I can just type ./script.sh *.mkv in my terminal.This is what I have so far, but it doesn't work whatsoever.
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May 14, 2010
Have installed Suse 11.2. how can I change the calendar format dd/mm/yyyy and how to configure the system to sync.from an ntp?
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May 4, 2010
I have a ubuntu server , can advise if I want to change the network setting ( eg. IP address , gateway address etc ) , which one is the configuration file ? for example , if I want to change eth0 setting , what file I should update ?
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Jul 12, 2010
using variables in CURL.Here's my code:
transfer_to_pcid="AAAAAAAA"
transfer_from_pcid="BBBBBBBB"
basic_password=`ssh rsync@some_test_domain 'curl --silent
[code]....
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May 20, 2010
I am running Red Hat Linux Enterprise 5; I am always using the export command to set environment variables.Are there any other ways to set environment variables and what are the advantages/disadvantages of them?
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Sep 13, 2010
Is there a difference when variables are referred to as $variableName and ${variableName} in bash?
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Feb 17, 2010
in gnuplot it's possible to set the value of a variable via linux shell command.or instance we can do
Code:
a="`echo 1`"
b="`echo 2`"
[code]...
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Jun 4, 2010
I have question regarding concatenation of two variables with underscore.i.e. (bourne shell)
Code:
# var1=123
# var2=456
[code]...
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Jun 21, 2010
he $g09root is picked up ( in both the csh and the bash), but not the $GV_DIR or the $GAUSS_SCRDIR. I guess it's some stupid error, but it is highly frustrating.Here is the .profile file:Quote:
# To make use of this feature, simply uncomment one of the lines below or
# add your own one (see /usr/share/locale/locale.alias for more codes)
#
[code]...
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Oct 12, 2010
Explain the following unexpected results
$ whereis date
date: /bin/date ?
$ echo $ PATH
[code]...
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May 9, 2010
Is there a command that can list the variables that I am using in a script? I mean the variables that I created in the script not the environment or local variables. For example if I have a script that has the following var's like : name=Alex, age=20, postal_code=12345, how can I list them all @ once WITHOUT using echo $name, $age and so on. Imagine I have a lot of variables and i can't echo them all.
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May 25, 2010
In the following lines I am trying to replace Puppy Linux 5.0 Released with the content of external variable Var. Following lines are in a file called news
Code:
<A title="Puppy Linux 5.0 Released" href="http://lwn.net/Articles/388754/" rel=bookmark><FONT color=#ffffff size=2><STRONG>Puppy Linux 5.0 Released
</STRONG></A><STRONG> | </STRONG>
I have tried following.
Code:
awk -v var=NewNews '/title="[^"]*/{n+=1}{if (n==1){sub(/title="[^"]*/,"title="$var",$0)};print }' news
But it is replacing Puppy Linux 5.0 Released as $var, not with the contents of var.
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Mar 14, 2011
I am trying to rename a list of variables in my script using a second list of variables. I want the variables in the second list to replace the variables in the first list such that the first variable in List 1 is renamed after the first variable in List 2, the second variable in List 1 is renamed after the second variable in List 2, the third variable in List 1 is renamed after the third variable in List 2, and so on.
For example:
I know how to rename each file individually, but would like to run Do Loop which can rename all my output files at once.
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Jun 28, 2011
I set a variable before entering the FTP session (vDate). Then it does not seem to resolve when I try to use it in the session as part of an mput command. $vDate resolves as an empty value. Can you point me in the right direction?
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May 20, 2010
Ive created some custom shell scripts to run during the kernels boot process (they are called from the init script).I was wondering if there's any way to assign a variable that can be accessed between different scripts.For example my first script checks which type of pc i am installing on and assigns the hard drive location to a variable.HARDDRIVE = "/dev/sda1"at the end of the script it calls another script. In this script I cant reference HARDDRIVE as it is blank, to get around this I need to repeat the same code for assigning it.Its more of a space/aesthetics issue but I figured someone might know the solution off the top of their head
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Jun 2, 2010
I know many people have asked about environment variables before, but I am having a hard time dealing with these paths while ensuring I don't mess around with the original settings. How would you go about executing these commands in Ubuntu in terms of environment variables?
put /home/stanley/Downloads/ns-allinone-2.34/bin:/home/stanley/Downloads ns-allinone-2.34/tcl8.4.18/unix:/home/stanley/Downloads/ns-allinone-2.34/tk8.4.18/unixinto your PATH environment; so that you'll be able to run itm/tclsh wish/xgraph.
IMPORTANT NOTICES:
(1) You MUST put
/home/stanley/Downloads/ns-allinone-2.34/otcl-1.13,
/home/stanley/Downloads/ns-allinone-2.34/lib,
into your LD_LIBRARY_PATH environment variable.
[Code]....
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Aug 12, 2011
I have $db and $DATE set in my bash script, then I need to join them like this: mysqldump --user=usr --password=pss --databases $db | gzip > /backups/sqlNew/$db_$DATE.sql.gz;
Unfortunately, that doesn't work. How do I properly join those 2 variables into a filename?
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Jun 7, 2010
cwrsync is a great tool for synching "My Documents" to a network drive in Windows. However it uses a portion of cygwin to do this which uses forward slashes instead of back slashes. So, a manually typed command like the following works great: rsync -r --delete --exclude "My Pictures" "/cygdrive/c/Documents and Settings/demo/My Documents/" /cygdrive/j
However, you cannot put a variable like %userprofile% in this as it comes out like this (and is unrecognized): rsync: change_dir "/cygdrive/C:Documents and Settingsdemo/My Documents" failed: No such file or directory (2)
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Apr 14, 2010
I'm trying to clean up some files and I've been using the rename command as its the easiest way I've found to do it. One problem I've found is that on a couple of batches of files they have a set random numbers on them which I need to remove.
Only problem is I can't find a way for rename to "lock" onto those numbers to remove them. The file name structure is something like this:
file name[random numbers].extension
There are brackets around the numbers as well which I'm not sure will help or not.
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Aug 5, 2010
What will be the output of the following Shell Script?
Code:
a="1245"
[-n $a]
[code]...
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Jan 23, 2010
I have a problem with a very big script I wrote in bash, and now I need to modulirize it in at least four smaller scripts. The problem is, that most of the variables I have will need to be shared by all scripts.
My question is: is there a way to declare global variables in bash? So that I can use and change them in any of the scripts and every change in the variable can be "seen" by the other scripts later.
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Apr 4, 2011
I've created a script that put in dynamic variables the value HELLO 1, HELLO 2 HELLO 5. And I put the values of this variables in the file text.txt. Here's the script:
Code:
for i in $(seq 1 5); do eval ${i}=$(cat << EOF "HELLO" $i EOF); done
cat > text.txt << EOF
$1
$2
[Code]...
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