Software :: Show Variables Like 'innodb_flush_method' Empty
Feb 20, 2010when I check mysql innodb_flush_method it's empty. is it normal?
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Programming :: How To Check For Empty Variables In PHP
Apr 26, 2010I want to check if a MySQL db query will return an empty result - I first do this:
$query="SELECT * from <whatever" ;
$result=mysql_query($query) ;
$row=mysql_fetch_row($result) ;
Now how do I check if $row is empty or not? Will $row="" do the trick?
Programming :: Variables Doesn't Show After The Script Is Run
Mar 20, 2011I have 2 scripts that I copy from the material I study, one about working with environment variables and the other one about parsing command line output.
The problem with the first one is that the variables doesn't show after the script is run
The script syntax is as follows ( in short )
#! /bin/bash
SYS_NAME=rhel01
OS_SYS="RHEL 05"
export SYS_NAME OS_SYS
echo " The hostname of this system is $SYS_NAME"
[Code].....
Ubuntu :: SMB Shares Show As Empty?
Jan 6, 2010I have a problem accessing SMB shares in ubuntu 9.10. It worked fine before until I created a symbolic link and deleted it. Now the SMB share shows as empty or says "it has no been mounted" when I use "connect to server" to access it. oddly enough I can enter folder names and the contents do show but when I try to delete something there I get There was an error deleting "No such file or directory"
View 1 Replies View RelatedUbuntu :: 10.04 - Trash Icon Will Not Show Empty Status
Jul 1, 2010This is just one of those annoying but superficial things: When I empty my recycle bin, the items fully delete (as far as I can tell) but the icon for the trash remains a full trash can. I have 10.04
View 5 Replies View RelatedOpenSUSE :: When Move Something To Trash It Doesn't Show The Option Of Empty Trash
Mar 12, 2011When I move something to Trash it doesn't show the option of "Empty Trash". I can use "move to Trash" and it just moving there like some ordinary folder, but shift+del give me an option for deleting the files. Using OpenSUSE 11.3 32bit.
View 6 Replies View RelatedUbuntu :: Bash Script With Variables And Editing Variables
Apr 6, 2011mkvmerge -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.
General :: Shell Scripting \ (test If A File Is Empty, If It Is Then Display "file Is Empty" Otherwise Display "file Is Not Empty")?
Oct 5, 2010I am a final year student doign Computer systems engineering and just been introduced to linux. While still strugling to catch up with the commands, I am now given an assignment under shell scripting.I seriously am strugling to understand this question, can you please assist me.Here follows the assignment:
Operating Systems III
Some tips
e.g. (test if a file is empty, if it is then display "file is empty" otherwise display
[code]....
General :: Evolution Does Not Show Content Of Inbox Or Sent But Does Show Other Folders
Apr 28, 2011I configured it to use IMAP to access our exchange 2010 server front end on a LAN connection. Our webmail connection is segregated behind Forefront, so it was not connecting/authing that way. Even though smartphones have no problem. (sidenote, is there an activesync linux mail client ?)
I have many root folders and several folders underneath my inbox. total mailsize in inbox is 3.5 GB without subfolders. The sent is likewise as large. And is likewise empty.
Things I checked already:
View is all
Folder subscription is on and local copy is on
More info:
Thunderbird worky fine.
But thunderbird is missing calender
Tried adding lightening, but it won't add into thunderbird.
Will try finding a diff add on, or if anyone knows how to get lightening into thunderbird 3.1.8 on ubuntu 10 that would be great as well.
Ubuntu :: Maverick Doesn't Show Sub-menus / Show That?
Oct 14, 2010Anyway since I upgraded to Ubuntu 10.10 when I right-click on something and there is another menu in that menu, it doesn't show up for the first time!
for example if I want to create a an "Empty File", I'll right-click on desktop and when I want to go to "Create Document" menu, it doesn't show up! so I must click somewhere else and try again so for the second time it works!!
Ubuntu :: Using Variables In Hostname?
Aug 27, 2010I'm have been tasked with created a base Ubuntu image that can be used for cloning to multiple machines. As this is a network environment, each hostname will obviously need to be unique. Rather than manually changing the hostname each time a new, cloned machine is rolled out, I was wondering if there is a way to use a variable in the hostname (i.e., use a variable to truncate the the last 6 digits of the MAC address to the end of the static hostname--or any other unique variable for that matter--so it would look like hostname00E6D4).
View 7 Replies View RelatedFedora :: How To Set Environment Variables
May 18, 2010I just installed valgrind on my Fedora12 machine.
$ valgrind // 1
$ valgrind: Command not found. //error
$ /usr/local/bin/valgrind // 2 works fine
[code]...
Ubuntu :: Using Variables In Awk IF Statements?
Nov 2, 2010I have a list of names (testnames.txt) and I have a set of log files (testlogdata.log). I'm trying to search the column in my log file for each of the names in my testnames.txt file, and output the result to individual files, name1.txt, name2.txt, name3.txt, etc the names in the column of my log file can appear in different formats , ie the name "Tom Smith" can appear as "tom_smith", "tom-smith", "ACME/tom.smith", "ACME/thomas.smith". etc. To allow for the variations, I have my names in the testnames.txt as expressions, ie, for tom smith, I use the expression "to.*smith", etc.I'm running the following command:
for i in $(cat testnames.txt); do awk '{if ($9~/$i/) print $0}' testlogdata.log > $ioutput.log; done
I want the command to read a value for i, insert it into the if ($9~/inserted value for i/, and dump each line from testlogdata.log into a file named <value-for-i>output.log.
Ubuntu :: Subtract Two Variables In Awk
Feb 11, 2011Turns out I don't have bc in my Ubuntu distro and I can't install it. how to subtract two variables (BASH variables) from awk and set the result as another variable, e.g: finalvalue=`awk '{print $first - $second}'`
View 2 Replies View RelatedDebian :: Compare Two Env Variables ?
Feb 8, 2010I have a certain number, let's say $n, of input files *.inp for a software i use.
For each of them I'll get an output file, *.out.
These output files are, all together, an input for a second software I use.
For this reasons, I collect all the output files in a folder, let's say pop_folder.
Before I run the second software I have to make sure that the first one runs successfully and all .out files joined the pop_folder.
I'm trying something like that:
It seems that my if condition is true despite the actual values of $n and $m.
Red Hat / Fedora :: Variables Within A Sub Menu?
Jun 9, 2011search_proc () {
outputfile3=$3
clear
[code]....
General :: Using Variables In CURL?
Jul 12, 2010using 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]....
Debian :: Python 2.7 Can't See OS Environment Variables
Aug 23, 2015I'm trying to compile Ardour on jessie amd64 using the Debian source code (there's already an ardour package but I want to use different compile options). I've applied the Debian patches and have all the required dependencies installed.
Scons quits with a KeyError message from python2.7 saying that os.environ['DEB_HOST_ARCH_OS'] is not defined.
Checking with 'dpkg-archtecture -l' shows that DEB_HOST_ARCH_OS=linux, but 'print os.environ["DEB_HOST_ARCH_OS"]' in python says that name 'os' is not defined. The scons script has 'import os' at the top so it should be seeing it.
How do I make this visible to python (I'm assuming this problem is specific to the jessie python2.7 installation and not python in general)?
Fedora :: Changing Environment Variables?
Oct 11, 2009How do I edit my .bash_profile so recursive directories are on my path without manually typing all the directories? For example, I want to have /home/woodenbox/SU, /home/woodenbox/SU/bin, /home/woodenbox/SU/bin/src, etc on my path without actually having to write the paths for all the subdirectories
View 3 Replies View RelatedFedora :: X11 DISPLAY Variables And Firefox 3.6?
Mar 31, 2011I have an elementary question: how can I determine the X11 addresses of my two displays? I am using an ATI card that splits the video signal into two VGA signals which correspond to two displays. I'd like to open one Firefox profile on one display and a second Firefox profile on the other display. So
Firefox --display=:0.0 -P Profile1
Firefox --display=?? -P Profile2
Currently :0.0 opens Firefox in the display my terminal is showing on. I figure there is a linux command to help me determine which X11 addresses are available to me but I haven't come across it yet.
[Code]...
I'd like to have one Firefox window open up on DVI-0 and a second Firefox window open up on DVI-1.
This would be very useful for me. It would mean that I could use 1 PC rather than 2 PCs for these two Firefox windows that I will eventually display on separate TVs.
Fedora :: How To Set Environment Variables Permenently
May 3, 2011How to set JAVA_HOME environment variables permanently such that it will not have to be set each time it has to be used.
View 5 Replies View RelatedGeneral :: Any Other Ways To Set Environment Variables
May 20, 2010I 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?
View 4 Replies View RelatedGeneral :: Referring To Variables In Bash?
Sep 13, 2010Is there a difference when variables are referred to as $variableName and ${variableName} in bash?
View 1 Replies View RelatedUbuntu :: Defining Variables With Printf?
Mar 24, 2010I am trying to use bash 'printf' to format an environment variable.Doing this I get on the screen just the format I need (underscores mean blank spaces):prompt> printf "%10s" "1.23"________1.23Unfortunately, when this is assigned to a variable, the format disappears:prompt> X=`printf "%10s" "1.23"`prompt> echo $X1.23Does anyone know what can be done in this case to get a proper format?Why does not 'printf' respect the left blank spaces when assigning values to a variable?
View 3 Replies View RelatedUbuntu :: Variables In .bashrc: How To Using Dir Path
Jun 20, 2011I have what I hope is a fairly simple question to answer. In my ~/.bashrc file I can create this alias:
Code:
alias uChmodDP='chmod -R $1 $2' #specify permissions. and the variables work fine. But I cannot seem to get any love from this alias:
Code:
alias umnt='umount /dev/$1' I realize the likely problem is the variable following hot on the heels of a specific directory, but is there anyway to specify a variable in an alias like this? For some reason I cannot umount usb pen drives by right clicking, and have to always resort to the terminal to do so, which for me is no real biggie, but if I could create this alias it would be an even better no biggie to umount using the terminal.
Actually, the inability to right click to umount usb devices seems to be a Thunar issue since I run xubuntu. Using Nautilus I am able to right click and eject/safely remove devices. Using Thunar however, right click unmount always pukes back an error that the device must have been mounted on the command line or some such BS. But like I said it is no real biggie to use terminal, but an alias would be even nicer. I prefer using Thunar and Xubu most of the time b/c my laptop is quite underpowered.
Programming :: Setting Variables In C-shell?
Jul 12, 2010I'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.
View 1 Replies View RelatedProgramming :: C With Gcc: Are All Variables Defined Like Pointers
Sep 13, 2010i'm practicing in very basic c programs using the gcc compiler.I found that when i create two variables let's say
Code:
int a,b and Code: a=15;
b=3;
a=b;
b--;
then a equals 2.I thought that this isn't normal in C isn't it?I haven't had the time to read the gcc documentation yet...so i think it has something to do with my compiler's default settings.I use the
Code: gcc filename.c -o filename command to compile
Are all variables defined like pointers?
General :: Gnuplot Variables Into Shell?
Feb 17, 2010in 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]...
General :: Setting Up Variables (in RDGEN)
Jan 17, 2010I 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?
General :: Concatenate Two Variables With Underscore?
Jun 4, 2010I have question regarding concatenation of two variables with underscore.i.e. (bourne shell)
Code:
# var1=123
# var2=456
[code]...