如果我在终端中运行它,则工作正常:
lsof -F n +D /some/directory
但是当我从Java运行同一件事时,它不会:
Process lsof = new ProcessBuilder("lsof", "-F", "n", "+D", "'/some/directory'").start();
lsof.waitFor();
if (lsof.exitValue() != 0) {
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(lsof.getErrorStream()));
String line = null;
StringBuffer sb = new StringBuffer();
while ((line = reader.readLine()) != null) {
sb.append(line);
sb.append("\n");
}
log.warning("STDOUT:\n" + sb.toString());
} finally {
if (reader != null) {
reader.close();
}
}
}
从Java调用时,它返回:
STDOUT:
lsof: WARNING: can't stat('/some/directory'): No such file or directory
lsof 4.85
latest revision: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/
latest FAQ: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQ
latest man page: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/lsof_man
usage: [-?abhlnNoOPRtUvV] [+|-c c] [+|-d s] [+D D] [+|-f[cgG]]
[-F [f]] [-g [s]] [-i [i]] [+|-L [l]] [+|-M] [-o [o]] [-p s]
[+|-r [t]] [-s [p:s]] [-S [t]] [-T [t]] [-u s] [+|-w] [-x [fl]] [--] [names]
Use the ``-h'' option to get more help information.
谁能解释为什么?
最佳答案
new ProcessBuilder("lsof", "-F", "n", "+D", "'/some/directory'")
^ ^
删除
/some/directory
周围的单引号。它们被传递给lsof
程序,并被解释为路径名的一部分。