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Writing Bash shell scripts corresponding to windows bat files

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# 8  
Old 09-17-2010
You can check this link in the forum which points to some books and excelent links: https://www.unix.com/shell-programmin...m-members.html

=o)
This User Gave Thanks to felipe.vinturin For This Post:
rajuchacha007
# 9  
Old 09-17-2010
@felipe.vinturin

Would you please explain what -z stands for? I tried to use different letter and it displays warning message. Thank you very much.

Best
# 10  
Old 09-17-2010
you can look below link for test constructs Smilie

Test Constructs
This User Gave Thanks to ygemici For This Post:
rajuchacha007
# 11  
Old 09-17-2010
@ygemici

Indeed thank you for the reply. I would like to know, why this if case(especially in my script courtesy felipe.vinturin) listens to few characters? like -p,-z etc and not to -n,-a,-q,.....etc. Is there any meaning for those characters like -n for negation or something like that? Thank you very much.

Best
# 12  
Old 09-17-2010
Quote:
Originally Posted by rajuchacha007
@felipe.vinturin

Would you please explain what -z stands for? I tried to use different letter and it displays warning message. Thank you very much.

Best
Try on your box: man test

Lets say, inside a shell script, an if statement is a "test" command call.
Code:
# man test
# ...
       -z STRING
              the length of STRING is zero
# ...

If you prefer, you can also use:
Code:
# var="Hello World"
# echo "The length of var is: [${#var}]"
The length of var is: [11]

# 13  
Old 09-17-2010
MySQL
Quote:
Originally Posted by rajuchacha007
@ygemici

Indeed thank you for the reply. I would like to know, why this if case(especially in my script courtesy felipe.vinturin) listens to few characters? like -p,-z etc and not to -n,-a,-q,.....etc. Is there any meaning for those characters like -n for negation or something like that? Thank you very much.

Best
of course we want to explain each one by one but list is very long Smilie
you can read the good document instead of and save the url very useful Smilie

Introduction to if
This User Gave Thanks to ygemici For This Post:
rajuchacha007
# 14  
Old 09-18-2010
Writing Bash shell scripts corresponding to windows bat files
Experts,
I am looking equivalent command for call in the unix. I am writing here whatever i have done so far after the batch file.

Code:
@ECHO OFF
CLS
IF DEFINED MY_HOME GOTO start ELSE GOTO home_not_set
call %MY_HOME%\bin\setvars.bat

:start
SET home=%cd%
chdir /d %MY_HOME%\app

SET args=%*
call "%java_home%\bin\java" -cp "conf;lib\*" com.myjava.myproject.commans.projectlog.MyLog %args%
GOTO end

:home_not_set
ECHO My_HOME environment variable is not set.

:end
chdir /d %home%
ENDLOCAL

here is what i have i tried so dar
Code:
# Riamp test
set riampPath=RIAMP_HOME/bin/setvars.sh
if [ -z "${RIAMP_HOME}" ]
then
	echo "Set environment variable RIAMP_HOME before running this script".
	exit 1
fi

# Riamp test
if [ -z "${RIAMP_HOME}" ]
then
	call "riampPath"
fi

i know unix does not have goto statements. we can use subroutine instead. Thank you.
Last edited by rajuchacha007; 09-18-2010 at 10:55 AM..
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