# Script shell in java code **URL:** \ **Category:** Programming\ **Created:** [May 7, 2012, 8:42am UTC](https://community.unix.com/t/script-shell-in-java-code/309746 "2012-05-07T08:42:39Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![chercheur857](https://community.unix.com/letter_avatar/chercheur857/32/6_22734026db12803ebb3e059622ac3534.png) [@chercheur857](https://community.unix.com/u/chercheur857)\ **Post date:** [May 7, 2012, 8:42am UTC](https://community.unix.com/t/script-shell-in-java-code/309746/1 "2012-05-07T08:42:39Z")
Hello, Please i want to insert this code in a java program because i need to call a java function inside the while: > [@](#): > > cmd1 my\_program & my\_pid=$! > while cmd2 $my\_pid > do > sleep 60 > //call a java function > done Please how can i do? thank you so much ---
**Author:** ![jlliagre](https://community.unix.com/letter_avatar/jlliagre/32/6_22734026db12803ebb3e059622ac3534.png) [@jlliagre](https://community.unix.com/u/jlliagre)\ **Post date:** [May 8, 2012, 6:30am UTC](https://community.unix.com/t/script-shell-in-java-code/309746/2 "2012-05-08T06:30:42Z")
What do you mean with "java function" ? A method or an application ? In any case, if you code in java, better doing everything in java instead of trying mixing it with shell scripting. ---
**Author:** ![chercheur857](https://community.unix.com/letter_avatar/chercheur857/32/6_22734026db12803ebb3e059622ac3534.png) [@chercheur857](https://community.unix.com/u/chercheur857)\ **Post date:** [May 10, 2012, 3:17pm UTC](https://community.unix.com/t/script-shell-in-java-code/309746/3 "2012-05-10T15:17:10Z")
yes, it's a java method I would like to insert linux commands in the java code because I have a library that I can use it only through the linux command (cmd1,cmd2) cmd1,cmd2 generate files ,I have to store them using java methods > [@](#): > > cmd1 my\_program & my\_pid=$! //cmd 1 of my library > while cmd2 $my\_pid //cmd2 of my library > do > sleep 60 > //call a java method : store files > done Thank you for help ---
**Author:** ![Corona688](https://community.unix.com/letter_avatar/corona688/32/6_22734026db12803ebb3e059622ac3534.png) [@Corona688](https://community.unix.com/u/Corona688)\ **Post date:** [May 10, 2012, 3:28pm UTC](https://community.unix.com/t/script-shell-in-java-code/309746/4 "2012-05-10T15:28:02Z")
I think it would make more sense to create a list of files for java to use once, and have a loop inside java itself process them, for two reasons: 1) You can't really embed java inside bash like that 2) Running, loading, and quitting java 9,000 times to process 9,000 files will be immensely wasteful. ---
**Author:** ![chercheur857](https://community.unix.com/letter_avatar/chercheur857/32/6_22734026db12803ebb3e059622ac3534.png) [@chercheur857](https://community.unix.com/u/chercheur857)\ **Post date:** [May 10, 2012, 3:58pm UTC](https://community.unix.com/t/script-shell-in-java-code/309746/5 "2012-05-10T15:58:43Z")
is this possible in my case? I explain my problem again i use the bib of checkpoint BLCR cmd1 my\_program & my\_pid=$! //cmd 1 of the library --\> let me to run my\_program: process that i want to checkpoint (cmd1=cr-run) while cr-checkpoint $my\_pid //cmd2 of the library: generate file of checkpoint do sleep 60 //call a java method : store file done //the while let me to checkpoint my\_program every 6 seconds ---
**Author:** ![jlliagre](https://community.unix.com/letter_avatar/jlliagre/32/6_22734026db12803ebb3e059622ac3534.png) [@jlliagre](https://community.unix.com/u/jlliagre)\ **Post date:** [May 11, 2012, 8:31am UTC](https://community.unix.com/t/script-shell-in-java-code/309746/6 "2012-05-11T08:31:26Z")
You cannot call a java method from a shell script, only a java application. Use java instead of a shell script to do your loop. ---
**Author:** ![chercheur857](https://community.unix.com/letter_avatar/chercheur857/32/6_22734026db12803ebb3e059622ac3534.png) [@chercheur857](https://community.unix.com/u/chercheur857)\ **Post date:** [May 11, 2012, 9:22am UTC](https://community.unix.com/t/script-shell-in-java-code/309746/7 "2012-05-11T09:22:24Z")
yes i'd like to use java instead of a shell script to do the loop. So I have to call Runtime.exec for the first command > [@](#): > > cmd1 my\_program my\_pid = & $! but I did not understand how to do for the second command since it's a condition in the loop, in addition it must take as parameter the pid of the process running.. Thank you for help ---
**Author:** ![jlliagre](https://community.unix.com/letter_avatar/jlliagre/32/6_22734026db12803ebb3e059622ac3534.png) [@jlliagre](https://community.unix.com/u/jlliagre)\ **Post date:** [May 11, 2012, 7:01pm UTC](https://community.unix.com/t/script-shell-in-java-code/309746/8 "2012-05-11T19:01:43Z")
Use a wrapper that launch cmd1 in the background then prints its pid. Get the pid from the the process outputStream. ---
**Author:** ![chercheur857](https://community.unix.com/letter_avatar/chercheur857/32/6_22734026db12803ebb3e059622ac3534.png) [@chercheur857](https://community.unix.com/u/chercheur857)\ **Post date:** [May 12, 2012, 8:33am UTC](https://community.unix.com/t/script-shell-in-java-code/309746/9 "2012-05-12T08:33:11Z")
Please can you explain your idea a little further I don't know this concept of wrapper, I wonder if you could clarify a bit your idea thank you very much ---
**Author:** ![jlliagre](https://community.unix.com/letter_avatar/jlliagre/32/6_22734026db12803ebb3e059622ac3534.png) [@jlliagre](https://community.unix.com/u/jlliagre)\ **Post date:** [May 12, 2012, 8:39am UTC](https://community.unix.com/t/script-shell-in-java-code/309746/10 "2012-05-12T08:39:08Z")
```nohighlight #!/bin/sh cmd1 & echo $! ```