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Old 02-21-2008, 04:53 AM   #1
maheshkodamati
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executing shell script from java application


hi,i want to know is there any way of executing a shell script from my java application? please help me........
 
Old 02-21-2008, 05:26 AM   #2
bartekg
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read about method exec() at java.sun.com/j2se/1.4.2/docs/api/java/lang/Runtime.html

quick example how to execute 'ls' command

Runtime.getRuntime().exec("ls -l");

Last edited by bartekg; 02-21-2008 at 05:29 AM.
 
Old 02-21-2008, 12:52 PM   #3
maheshkodamati
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Thank u bartekg.......
i have read the description given for runtime and i've tried executing the program as below:
Public class ExecCMD{
psvm(S a[]){
try{
Runtime r=Runtime.getRuntime();
Process p=r.exec("sh xyz.sh");
}catch(Exception e){
.......
}
}
}
when i run this code i didn't get the o/p as the shell should print a string.So,i have changed my shell to redirect the o/p to a file
i.e
xyz.sh: echo "abcdef" > abc.txt
so after running the above java program i got a file named abc.txt which contains the string abcdef.this shows that my shell is running.
But what my problem is, i must give input from an interface created by java
program to a shell script.(dynamically)
i' m very thankful to u
plz reply me soon
 
Old 02-21-2008, 10:41 PM   #4
JWPurple
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One way to do it is to create a file-system pipe (man mkfifo). Have the script read from it, and have the java program write to it.
 
Old 02-22-2008, 02:29 AM   #5
jlliagre
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Another way would be using the Runtime.getInput/Output/ErrorStream() methods.
 
Old 02-24-2008, 11:39 AM   #6
Tinkster
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Moved: This thread is more suitable in <PORGRAMMING> and has been moved accordingly to help your thread/question get the exposure it deserves.
 
  


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