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Old 01-20-2004, 04:35 PM   #1
Registered: Aug 2003
Location: Mallorca, Spain
Distribution: xubuntu
Posts: 551

Rep: Reputation: 38
Unhappy Bash script problem


If I call my bash script (openfirebird) from commandline it works fine but if I run it my program (kdevelop) it does not work as expected. The if statment is always false and
$FBDIR/MozillaFirebird -remote "xfeDoCommand(openBrowser)" & is called. This givs a error: No running window found.

If i got an instance of the browser it works fine.

Any idees!

The script is simple:


#script by Kent Le (
#written in October, 2003

FBNUM=`ps -A | grep -c MozillaFirebird`
#really freaking ugly hack: counts number of already running instances of firebird
#directory of Firebird directory; modify to your own

if [[ FBNUM -lt 1 ]]
#if no running instances -eq equal -lt less than
$FBDIR/MozillaFirebird &
#otherwise, there is at least one instance of firebird running
$FBDIR/MozillaFirebird -remote "xfeDoCommand(openBrowser)" &
#open a new browser instance

and in the program :
Where the script is openfirebird.

Old 01-20-2004, 04:56 PM   #2
Senior Member
Registered: Sep 2002
Location: Nashville, TN
Posts: 1,552

Rep: Reputation: 53
Re: Bash script problem

Originally posted by kalleanka
if [[ FBNUM -lt 1 ]]
Old 01-30-2004, 12:59 PM   #3
Registered: Aug 2003
Location: Mallorca, Spain
Distribution: xubuntu
Posts: 551

Original Poster
Rep: Reputation: 38

Ok i rewrote the if-statement and now it works fine.

Here is a nice site all hackers should read or should have read.

The Bull of Boolean Types

Any project using source code from many sources knows the pain of multiple conflicting boolean types. The new C++ standard defines a native boolean type. Until all compilers support bool, and existing code is changed to use it, we must still deal with the cruel world.

The form of boolean most accurately matching the new standard is:

typedef int bool;
#define TRUE 1
#define FALSE 0


const int TRUE = 1;
const int FALSE = 0;

Note, the standard defines the names true and false not TRUE and FALSE. The all caps versions are used to not clash if the standard versions are available.

Even with these declarations, do not check a boolean value for equality with 1 (TRUE, YES, etc.); instead test for inequality with 0 (FALSE, NO, etc.). Most functions are guaranteed to return 0 if false, but only non-zero if true. Thus,

if (TRUE == func()) { ...

must be written
if (FALSE != func()) { ...


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