Java exec linux command

Question

Possible Duplicate: How to make pipes work with Runtime.exec()? Hello i wrote simple java function using exec command. This function check that font exist in system (linux). First i wrote simple bash command : `identify -list font | grep -i 'Font: Times-Bold' -w` and its work perfectly so i create simple program: ``` public abstract class SystemReader{ public static final void checkFontExist(String name){ String command = "identify -list font | grep -i -w \'Font: " + name + "\'"; Process p =Runtime.getRuntime().exec(command); String lines = ""; String resoults =""; BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(p.getInputStream())); while((line buferedReader.readLine())!=null){ resoult += line + "
"; } System.out.println("RESPONSE: " + resoult); bufferreader.close(); } ``` } Its working but not i espect. This function return all fonts exist in my system . Its seems that command grep is not exec ? i try use another version of command exec() i create : ``` Str…

Accepted Answer

```
String[] cmd = {
    "/bin/sh",
    "-c",
    "identify -list font | grep -i -w \'Font: "  + name + "\'"
};

Process p = Runtime.getRuntime().exec(cmd);
```

Will pass the command through the shell. Which is what you need since the | (pipe) command is provided by the shell and not the Operating System.

Java exec linux command

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