Ubuntu :: Bash Script With Variables Assigned To Path

Jul 7, 2011

I am trying to create a file, that has a variable assigned to it, in another directory. For some reason when I run the script it creates the file only in my pwd and I cannot for the life of me figure out why.My pwd at the moment is Desktop but it does not matter as I have tried from elsewhere. I have tried the touch command in the following ways (some will be obviously incorrect but I was desperate)and many more as well as the original format listed.

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Ubuntu :: Bash Script With Variables And Editing Variables

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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Ubuntu :: Variables In .bashrc: How To Using Dir Path

Jun 20, 2011

I have what I hope is a fairly simple question to answer. In my ~/.bashrc file I can create this alias:

alias uChmodDP='chmod -R $1 $2' #specify permissions. and the variables work fine. But I cannot seem to get any love from this alias:

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.

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Software :: Where Are The PATH Variables Stored In

Aug 20, 2010

Dear when I issue the following command at shell: echo $PATH All the user variables are displayed on the console terminal window: Now my question is that, In which file these variables are stored and where is it stored? My Problem: I had installed OpenJDK that came with Fedora-12. Now I have uninstalled it. I want to use SunJDK6. After installation I want to set new JVM in path variables. I can set variables, but before doing so I want to remove some old variables.

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Debian Configuration :: Setup PATH Environment Variables?

Jan 8, 2011

I edited /etc/profile to look like:

# /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
# and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).
if [ "`id -u`" -eq 0 ]; then


When i type env, it just shows: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin It also shows JAVA_HOME, CLASSPATH and others were set up. Trying to get updatetool in glassfish usable for any user and during any session. I did the export command in a shell, and it worked, but not after closing the session. how to do environment variables.

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General :: $PATH Variables, Soft Links, And Command Not Found?

Sep 17, 2010

I am having problems with symbolic links and the $PATH variable.I have a directory:# /usr/rulerX/squarewhere /usr/rulerX/square is a symbolic link such that:

# ls -la
square --> square.hg.current
My path variable is set as:


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Ubuntu :: BASH Script Not Recognizing Variables

Jul 25, 2011

I'm trying to write a bash script, and for some reason Bash doesn't seem to like any of my variables _except_ the one used in a loop.What's going on? The same problem with MYS occurs regardless of its name, whether it is declared or referenced before, after, or inside the loop, and whether it is a string, integer, or floating-point number. Also, as far as I can tell, everything related to Bash is up to date.

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Ubuntu :: Variables In Bash Alises Not Working With 11.04

Jul 26, 2011

I am trying to use the following bash alias:

I've been able to get this working under mac and solaris.

I've also tried not escaping the vars.

Anyone know if this is doable with ubuntu's bash shell? (or any meaningful workaround other than writing a script for this?)

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General :: Referring To Variables In Bash?

Sep 13, 2010

Is there a difference when variables are referred to as $variableName and ${variableName} in bash?

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Ubuntu :: Python - Export Variables To Bash Commands?

Feb 19, 2010

I created variables in python and would like to be able to incorporate those into bash commands that will be mixed into the script. Example:

name=raw_input("Type your name and press ENTER: ")
import os
os.system( echo "name")

Of course this doesn't actually work, but i think you get an indication of what I am trying to do.

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Ubuntu :: Assign Values To Bash Variables From A File?

Jun 9, 2010

Is there an easy way to get a line from a text file into a variable in a bash script?

I have a file called outside_temp that has a single number, say, 63.2

I would like to make a variable in a BASH script have that value.

I know how to use the input redirection and reassignment of stdin using code...

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Ubuntu :: Bash ${variables} : Replace Last Instance Of Regexp?

Mar 10, 2011

I have something like...

# echo ${var/%e/E} doesn't do anything because i can only replace "r" or "er" this way


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Ubuntu :: Cron Ignores Bash Script Variables

May 4, 2011

I have a personal server and a dynamic IP address, so I wrote a script to check the currently assigned IP address and compare it to the one stored in a file from the last check, and visit the update URL if it's different.

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General :: Command Path Is In PATH But Bash Does Not Find The Command

Jul 12, 2011

kernel, slackware 12.0
GNU bash 3.1.17


As you can see, /usr/local/bin is in the path. However, bash does not look for nasm in /usr/local/bin.

If I am root, things go well:


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Ubuntu :: Adding Strings To The Front And End Of Variables In Bash Scripting?

Mar 3, 2010

How do you add strings to the front and end of variables in bash scripting? for example, if I have


in as the contents of my variable, I want to add "l" to the front and "k" to the back of the contents.

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General :: Join 2 Variables In A Bash Script?

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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Programming :: Using Grep / Variables In Bash Script

May 10, 2010

I'm trying to write a bash script and I'm having trouble with it.I have a list of DNS entires from a file called zoneExport.txt.Than I want to parse a log file to see if that DNS entry has been queried for. So I'm running a grep command and trying to save it into a variable. What I'm looking for is a variable ($varGrepQ) that has the number of matches for the grep query. I will then run this through an if statement and do some things from there..

But my problem right now is with this grep query. It keeps outputting '0' even when I know there are records in that file and when I run the same query on the command line I get the actual count. My thought is that the $record variable is not passing right.

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Programming :: Counting Variables In Bash Script

Nov 13, 2010

If I read in variables entered by the user, how can I check to make sure the correct number of variables were entered? For example, after reading in a data file and making it into an array, I have:echo "To check the data, enter the first element number, last element number and step size as x y z:"read x y z.It then goes on to start a loop, but what I would like now (before the loop) is a check to see if three variables have been entered, before the rest of the script continues.

I've tried specifying the variables as $1, $2 and $3, but if I echo $#, the value comes out as zero, so it's obviously not working.

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General :: Declare Global Variables In Bash?

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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General :: Dynamic Variables And Heredocuments In Bash?

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:

for i in $(seq 1 5); do eval ${i}=$(cat << EOF "HELLO" $i EOF); done
cat > text.txt << EOF


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General :: Possible To Pass JavaScript Variables To Bash?

Apr 18, 2011

Can I pass javascript variables to bash script? If possible in bash script what code should I insert to receive javascript variables.

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General :: SQL Command Output To Bash Variables?

Aug 2, 2010

I would like to run a bunch of SQL commands from mysql client in bash. However, I would like to store the output in different variables. E.g.

var1=`mysql -u[user] -p[pass] -D[dbname] -e "Query1"`
var2=`mysql -u[user] -p[pass] -D[dbname] -e "Query2"`


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General :: Concatenate Two Environment Variables In Bash?

Nov 9, 2010

How do I concatenate two environment variables in bash?

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Software :: Bash Scripting And Integer Variables?

Jun 6, 2010

Are there numerical variables (like type int in C) in the shell script language of bash? Say I want a counter to increment each time a loop is traversed.

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Programming :: Bash: Making A Variable Out Of Two Other Variables?

Mar 18, 2010

I need to find the value of:

My script asks for the name you want to look up and I want it to return the value of $Namenumber

I was thinking:

but this returns


but does not actually resolve what the variable $Namenumber is equal to.

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Debian :: BASH Scripting - How To Use Variables With Filename Spaces

Jun 25, 2015

I am trying to create scripts to move files over from one directory to an ftp server and there is this one file with spaces that bash is see each word as being a file, here is the variable i am trying to use:

Code: Select allLOCL = '/mnt/cifs/"File name with spaces"/'
cd  $LOCL
ls -l

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General :: Sourcing Variables From ~/.bash.rc And Keeping Them Across Logouts

Sep 7, 2011

I've been writing a bunch of bash scripts to make possible non-interactive, secure, cron-based SVN checkouts with CollabNet's SVN client and GNOME Keyring Daemon (aka GKD) and one of the scripts was designed to start GKD, harvest its output, essentially a couple of environment variables, and export those variables in shell of a user the script is run as. All upon user login by sourcing a bash script in ~/.bashrc.The problem is that those environment variables will not be exported, because the script is being run in a sub-shell that exits upon it completion and environment variables get unset for good.Well, the question is how can those variables be set permanently, meaning they're exported and kept untouched even across login-logout sessions?

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General :: Which Environment Variables Not Inherited By Bash Shells

Jan 2, 2011

I am using Linux some years, but since I built a LFS, I feel noobish again. Now with the help of BLFS I am setting up my environment and somewhere I incidentally read, that not every variable is inherited by a child Bash shell. As for the $PS1 and $PS2 variables I know, that they are not inherited by non-interactive Bash shells (and there is no reason why they should in my opinion). Well, as for my first thread I hope the title gives enough information on what I want to know. But anyways: Which environment variables are not inherited by Bash shells?

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General :: Bash Read All Environmental Variables Set By Other Shells?

Jul 23, 2010

For example, if I'm in csh, I can use `setenv VARNAME varVALUE` while I can use export in Bash. Given that the environmental variables are created, can BASH read env vars from csh and vice versa?

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General :: Changing Shell From C To Bash - Apps Or Variables?

Jun 21, 2010

I have a user that has been used for long time now that runs o C Shell... now there is a need to change it to Bash Shell? Can I cause a problem changing his shell from C to bash? I mean apps or variables?

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