Reputation: 73
My Eclipse version is Photon and docker version is 18.06.0-ce-mac70.
I want to execute the Docker command when I issue shell script commands on Eclipse.
But when I use a shell script, the ls
command works well, but not docker + command
Error Stack trace :
`Exception in thread "main" java.io.IOException: Cannot run program
"docker": error=2, No such file or directory
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1128)
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1071)
at java.base/java.lang.Runtime.exec(Runtime.java:635)
at java.base/java.lang.Runtime.exec(Runtime.java:459)
at java.base/java.lang.Runtime.exec(Runtime.java:356)
at dbUpdate.ShellCommander.shellCmd1(ShellCommander.java:36)
at dbUpdate.ShellCommander.main(ShellCommander.java:29)
Caused by: java.io.IOException: error=2, No such file or directory
at java.base/java.lang.ProcessImpl.forkAndExec(Native Method)
at java.base/java.lang.ProcessImpl.<init>(ProcessImpl.java:339)
at java.base/java.lang.ProcessImpl.start(ProcessImpl.java:270)
at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1107)
... 6 more
And the code:
`package dbUpdate;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Scanner;`
public class ShellCommander {
static Scanner sc = new Scanner(System.in);
static String carSSID;
static String target;
static String IPAddress;
public static void main(String[] args) throws Exception {
String command = "docker ps";
shellCmd1(command);
}
public static void shellCmd1(String command) throws Exception {
Runtime runtime = Runtime.getRuntime();
Process process = runtime.exec(command);
InputStream is = process.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line;
while((line = br.readLine()) != null) {
System.out.println(line);
}
}
}
Upvotes: 0
Views: 324
Reputation: 201429
Java doesn't search your PATH
for commands. On my mac docker
is in /usr/local/bin
; I also would prefer a ProcessBuilder
over Runtime.exec
. Like
public static void main(String[] args) throws Exception {
String command = "/usr/local/bin/docker ps";
shellCmd1(command);
}
public static void shellCmd1(String command) throws Exception {
ProcessBuilder pb = new ProcessBuilder(command.split("\\s+"));
pb.inheritIO();
Process p = pb.start();
p.waitFor();
}
Upvotes: 1