General :: Bash Catching The Function Returning Value Into A Variable?
Mar 17, 2010i am dealing with this problemI have a function
function Une {
...
return $some_variable
[code]...
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Programming :: Bash: Give A Variable The Value Of A Function?
Aug 8, 2010I was wondering if possible in bash for a variable to take the value of a function, I mean the function returns a value and a variable will take it. example:
[Code]....
General :: (small) Bash Script - Catching Syntax Errors
Sep 9, 2010I've been trying to find a bug in this test script, but haven't been able to so far. I'm not lazy, I promise...just new to Bash so am having a hard time catching syntax errors. I call the script with the option -disableVenusBld, and it still prints "Starting build", which it shouldn't be doing right?
[Code]...
General :: Unidentified Error In Bash Script That Notepad ++ Is Not Catching?
Jun 24, 2011I've been debugging the following script all evening and am now stuck...this script is supposed to ssh to a router, pull interface conf, 'cut' 3 pieces of info, and then print the results of 2 as well as the 3rd (after running a ping cmd on the linux box):
SCRIPT_CODE
#! /bin/bash
lb1="0"
[code]....
General :: Bash - HISTSIZE - Readonly Variable -bash - HISTFILESIZE - Readonly Variable
Dec 8, 2009On 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.
View 5 Replies View RelatedProgramming :: C Function Not Returning An Integer After Comparing It To A Char?
Jan 23, 2010I've got a strange bug that I cannot figure out how to solve. Here is the function.
Code:
int getnexttab(char input[], int index, int length)
{
[code]....
Software :: Catching Signed And Unsigned Integers In BASH?
Dec 30, 2010Solving issues with signed and unsigned numbers in BASH.For a start, Yes, BASH is type independent � I know that. My problem lays in catching executables output into a BASH variable.My executables are not quite UNIX compatible, where returned values are 0 for OK, >0 ERROR. They return 0 for OK, >0 WARNING (only, so move on) and <0 ERROR (abort) instead.
Code:
// C++ BIN A
int main(){
[code]...
General :: Pass A Variable To A Function That Already Being Escaped?
Jul 28, 2010What i want to do is create multiple informix sql statements & later run them via a bash script.
Here is what i have so far (this works) but is meant to be run from a cron job so it only does one day at a time:
echo "
update hst`date --date='yesterday' +%m%d%y`
set x = 'GARP'
where y in ('CRE', 'LAC', 'SRL', 'JAG', 'JNM', 'BIM')
and appl = '';
[Code].....
The problem here is it doesnt want to read the variable $x correctly so the statement fails.
Programming :: Bash - Read Content Of File To Variable And Use This Variable In For Loop ?
Aug 21, 2009I'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).
Ubuntu :: Returning To A Menu In Bash Script?
Feb 7, 2011Im constructing a menu for a program using case. I have all my normal input options mapped out but i want to have a * ) option so that if something else is inputed, it displays "Incorrect input" and then resumes the normal menu function. How do I do this? Ideally, I'd like it to display "Incorrect Input" and then accept more input for the menu.
View 2 Replies View RelatedSoftware :: Get Variable From Text File Into Bash Variable?
Jun 10, 2009I 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?
View 2 Replies View RelatedUbuntu :: Matching And Returning A Part Of File Name On Bash?
Apr 25, 2011If I have files named like this:
abc_one.c
egx_two.c
tsf_two.c
[code]...
Programming :: Simple Bash Script Not Returning Correct Value?
Sep 14, 2010I have a very simple bash script:echo -n Create home directory?:
read HOMEDIR
if [ $homedir="y" ] || [ $homedir="yes" ]; then
homeval=" --makehomedir"
[code]...
General :: Unset Or Get Rid Of A Bash Function?
Jun 19, 2010If you set or export an environment variable in bash, you can unset it. If you set an alias in bash, you can unalias it. But there doesn't seem to be an unfunction.
Consider this (trivial) bash function, for example, set in a .bash_aliases file and read at shell initialization.
function foo () { echo "bar" ; }
How can I clear this function definition from my current shell? (Changing the initialization files or restarting the shell doesn't count.)
General :: Get N-variable Parameters In Bash
Mar 21, 2011I'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.
General :: Substitute Variable In Bash
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 $a the value should be 1, how to do this.
General :: Using An Alias Inside A Function In Bash?
Jun 8, 2011I have trouble with using an alias inside aash function. I would like to ssh into multiple machines by executing:ssh machine To achieve this, I put something like the following into my ~/.bashrc:
alias machine='user@machine'
ssh()
{
[code]....
General :: Bash: Input Password Into A Variable?
Aug 22, 2010I'm basically setting up two sshfs mounts and I have it set up so I run one command but type my password twice.Is there an easy to way to input a password using bash and pass that variable to another process asking for a password?
View 5 Replies View RelatedGeneral :: Bash Variable As Parameter To Script?
May 10, 2011I want to create a variable that when passed as a parameter to another bash script will keep its string quotes (so it stays as one parameter). What ways can I achieve this cleanly?
Code:
john@ubuntu:/usr/local/src$ cat foo.sh
#!/bin/bash
echo $0
[code]....
General :: Concatenate Variable Names In Bash?
Apr 7, 2011In 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]....
General :: Reading File Into Variable In Bash?
Mar 21, 2011I 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?
General :: Invoke A Function In Bash Shell Script?
Apr 24, 2010I just wonder the distinction calling the function between $(one_function) and one_function in bash shell script.
When I set the variable PS1 in ~/.bashrc, I can't invoke the function by one_func
ex:
export PS1="
[e[31m] $(one_func) # it works
export PS1="
[e[31m] one_func # it doesn't work
General :: Bash Function/alias For Package Managers?
Jul 6, 2010I have packer installed for AUR packages, but I want to be able to use the pacman command for both. I think I will need a function for this -- what I mean is that whenever I use pacman, it will try using packer and if that fails (invalid option) it will use pacman-color. It could also decide which program to use based on the arguments. I can't just use packer (alias pacman='sudo packer') because packer doesn't have some options like -R to remove packages. I want to always use it to install and upgrade packages however, because It can install from the default repositories as well as AUR.
Does someone know how to accomplish this, or could point me in the right direction? I'm new to bash scripting. error (e.g. pacman -V prints packer: Option '-V' is not valid.).
General :: Bash Script - Forget Global Variable's Value?
Apr 9, 2011I have a hard time with my bash script.
It forget global variable's value.
First look at my script.
Code:
Echo "PKGS is [$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.
General :: Simple Bash Command Causing Bad Variable Name
Feb 18, 2010When 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 $2}'`
I am using ubuntu.
General :: Bash Script Variable NULL Instead Of Value Of Expression?
Nov 17, 2010Quote:
#!/bin/sh
for i in {1..10}
do
for j in {1..50}
[code]....
The first echo generates something like: abc.de.fgh The second echo generates:
General :: Environmental Variable In Bash Command String?
Feb 9, 2011I do this:
Code:
a@b:~$ 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?
General :: Pull String From A File Into A Variable Using Bash
Aug 6, 2011I 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.
View 13 Replies View RelatedGeneral :: Function For Block Commenting Bash Scripts In Gedit
Apr 9, 2010I just started writing bash scripts and have a little question about the text editors. I now use gedit which I really like (don't like emacs for some reason), but I do miss some function for inserting/removing comment signs (in this case # for bash scripts) on a whole block of text. For example in Matlab you can simply mark a whole block and comment/uncomment all of it at once. Is this possible in gedit (via some plug-in or something?), or maybe in some other nice editor you can recommend?
View 7 Replies View RelatedProgramming :: Reading A Bash Variable In Bash Scripting ?
Nov 26, 2008I 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: