General :: Meaning And Functions Of Shell Symbols?

Mar 16, 2011

In shell scripting, what do or what does this symbol do or mean ? "."(octet), ";" (semicolon)? Would really like to know? Cause I saw a written script if [ -f /etc/file ];then. . /etc/file. Wondering, the "." is meant to be source, so is "." the same thing as "source" ?

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General :: Difference And Working Functions Between Kernel And Shell

Apr 4, 2011

I am the new child of the linux world. What is the difference and working functions between kernel and shell..

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General :: Deleted The /etc/rc.d/functions Folder And Functions.d Script And Turned Arch Machine Into A Brick?

Mar 19, 2011

None of my daemon scripts work now, and the startup process displayed errors. Should I reinstall the OS and start from scratch, or is there a way to recover these files? Is there a way to rebuild the files I deleted?

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Programming :: 'nm' Lists All Symbols - Including Static Library Symbols?

Apr 5, 2010

By issuing the 'nm' command on shared library (internally using one static library), the functions exposed by static library is also being listed, Which allows to use internal functions which is of course not intended. I have one static library having A(), B() and C() functions. Creating one shared library which has function XYS() that is using A() and B() functions from Static library. While doing 'nm' on shared library, all the static library function are being listed.

Static Lib:

void A(char *msg)


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Fedora :: Create A Shell Script File With Two Functions - Bash Scripting & /etc/bashrc

Oct 6, 2010

how come I can create a shell script file with two functions, I can execute the file, but when running declare -f, the functions are not on memory, and when invoking the function bash returns invalid. In the other hand, I can copy & paste the two functions at the end of my /etc/bashrc file.... then I can called the function by name.... and the commands within that function run on my session. here is a print of all my bash packets:


Does Fedora has restrictions on shell scripting? I haven't touch bash in seven years, so if things have change on it I'm behind on it, and sorry for my ignorance.

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Programming :: Global Bash Shell Functions - Line 2: Echotm: Command Not Found

Sep 13, 2010

I wonder if there is anyway to make a user-defined bash shell function global, meaning the function can be use in any bash shell scripts, interactively or not. This is what I attempted:


$ tail -n 3 /etc/bashrc
echotm () {
echo "[`date`] $@"


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General :: What Is ISO Meaning

Mar 16, 2011

I can't remember what "ISO" means. I've been busy with other projects, and I forget what release of Ubuntu I'm using. The computer I use the most is running Windoze 7, and I have Ubuntu running on two other machines but use them infrequently.

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General :: What Is The Meaning Of Kill %1

Jul 30, 2011

I have seen the following command:

$ kill %1

What is the usage of this statement?

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Programming :: Define Functions Within Other Functions In C++?

Mar 11, 2010

Is it possible to define functions within other functions in C++? I know it is the case in other languages.

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General :: Meaning Of File Command Output?

Feb 27, 2010

I used the following command

file /usr/bin/mawk
Output is


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General :: Top: Meaning Of Some Abbreviations In The Summary Area?

May 28, 2011

Kernel, Slackware 12.0top: procps 3.2.7Hi:Running top, I read, in the summary area,

root@darkstar:~# top


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General :: What Are The Symbols In VDT's Output

Feb 17, 2011

I've been messing with a curses-based disk check tool in Linux called VDT (visual disk test). It puts out a nice little chart on the screen as it's going, but I have no idea what each unit of output on the chart means. I've read the man page several times, but there doesn't seem to be any mention of the visual output.

For instance, right now I have a chart that looks like this during a read test. What do the o's and the Z mean?

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General :: Concept Of File System - Meaning Of Arrows

Feb 25, 2011

I've several questions to ask: Why do some files have black arrows pointed outward in my file system? Why are some files in compressed form, e.g. initrd.img?? How are such files used by the system??

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General :: Is '0' At End Of Line Meaning That Module Is Not Successfully Loaded?

Aug 24, 2010

I am trying to see if a module that i loaded on Redhat succeeds.The module is from intel called vtune_drv-x32_64-2.6.18-194.el5smp.ko.When I run the script during the installation process, it shows that it is successful.Is the "0" at the end of line meaning that the module is not successfully loaded?

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General :: What Is Meaning That File Is Named Pipe (FIFO)?

Jul 12, 2011

What is a pipe? and why a file is a named pipe? I am just learning linux.

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General :: Debug Symbols Of GNU Packages

Jul 21, 2011

Where can I find debug symbols of GNU packages, for example for coreutils etc.?

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General :: Yast2 Module - Meaning Of Color In Column Installed (available)?

Nov 9, 2010

I'm using openSUSE 11.3. In the Yast2's module: Software Management, in the search tab, there is a column called: "Installed (Available)", It usually shows the current installed version of the package, but sometimes its blue, red or most of the times black. What does the color mean?

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General :: How To List Imported Symbols In ELF Executable

Jul 9, 2010

For PE executable, I can list the imported symbols using

dumpbin /imports FILE.EXE

or using the depends utility which is GUI application.

`nm ELF-binary' just returns "no symbols".

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General :: Text Document Displays Only Symbols

Dec 7, 2010

When I try to open text file with mouse pad or kate write all I see is PK and in small letters HF over TF_. I have no idea how this happened. How do I get my text document back? Using XFCE4.6.1, mousepad and kate write for my journal. Properties says its a zip archive but I didn't do that. Anyway tried to unzip it and got:

PowerJustice may be a plain executable, not an archive
unzip: cannot find zipfile directory in one of PowerJustice or, and cannot find PowerJustice.ZIP, period.

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General :: Keyboard Layout For Mathematical / Greek Symbols?

May 12, 2010

I've been wondering about this for a long time but never thought to ask: I do a lot of scientific work so there are many times it would be really handy to be able to type mathematical symbols or Greek letters which, for the most part, aren't part of the ASCII character set. Like "∞ ρ σ τ ω ∑ ... √ ∫ ≤ ≥ " and so on. Is there a keyboard layout (for Linux) that maps simple key combinations to these kinds of characters? (Assuming all the encoding and font issues are worked out properly) I know I could create one myself but it'd be a lot easier if someone's already done the work, or at least if there's a partial solution I could modify.

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General :: Deleting Symbols From File - String Not Found

Aug 4, 2009

I am trying to delete these symbols "[ ]" from a file but it says string not found. I tried: %s/[//g while editing the file not working also tried sed -e '/[/d' and sed '/]/d' still no job.

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General :: Xorg: Map AltGr To The CapsLock Key (to Toggle 3rd Level Symbols)

May 7, 2010

as many others I don't need CapsLock. I want to reassign it such that it has the function of AltGr. I use Kubuntu 9.10 but I think there must be a solution which is distribution independent.

I already tried to use setxkbmap or xmodmap. Using xmodmap at least I managed that CapsLock to behaves like Del by following this description.

But I could not achieve assigning the AltGr behavior to CapsLock.

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General :: Curl -K Command Outputs Weird Symbols Instead Of Downloading URL From File?

May 16, 2011

I'm on Ubuntu 11.04. I have read around about how to use curl to download a list of URLs from a text file, and everyone says to use Code:curl -K URLlist.txt. This is what the curl man page says as well. However, for even a simple file with one URL, this command outputs a bunch of weird symbols for me instead of downloading the file.For example, I have a text file "test.txt" with one line in the following format:

url = ""
I use the curl command to download this file:


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General :: Functions Of The Tar Utility?

Apr 30, 2010

What are the functions of the tar utility?

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General :: Unable To Use Functions With Bash

Dec 24, 2009


CallFunct() {


When I try to run the current code, it stops on the bracket after functio() in CallFunct(). The only way I could get this to run was by removing CallFunct and just calling functio.

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General :: Change The Signature Of All The Functions In Scripts?

Mar 23, 2010

I was trying to write a script to change the signature of the all the methods in a set of scripts.. here is a sample of the same :

old signature :


New signature:

function methodname

That is i need to insert "function" keyword in front of the methodname and remove the () after the methodname.

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General :: Pthreads - Executing Two Different Functions Simultaneously

Jul 1, 2011

In my code I want to have two different functions to be executed simultaneously (in parallel) in a single processor system. I tried to use pthreads but they happened to be executed one after another. I have heard about fork, some saying that its no longer recommended since its functions can be achieved by pthreads.

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General :: Script Has 5 Functions But Exits Only After 2nd Function?

Jan 25, 2011

awk ' {
# when executing the script pass the logfile as parameter on the command prompt with the name of the file
#export file_name= "&1"


my problem is that when i execute this script only the first two functions are being called.once the DBcounttry_finalnofunc() is done ,the script exits.The rest of the functions are not being called.

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General :: Check The Referenced Functions In A Executable Through Command?

Oct 20, 2010

Is there any command that can check the referenced functions in a executable?

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General :: Use Inode Hook Functions(inode_alloc_security And Inode_free_security)?

Mar 4, 2010

how to use inode hook functions(inode_alloc_security and inode_free_security)?

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