linux - 文件 `/proc/{processId}/cmdline`的长度限制是多长？

Question

我有一个java进程，它的类路径包含很多jar，所以启动命令很长。

假设进程id为110101，当我通过命令cat/proc/110101/cmdline查看该命令时，发现该命令不完整，仅包含4000个字符左右。

还有其他方法可以显示原始启动命令吗？

Answer 1

 man proc

 /proc/[pid]/cmdline
              This holds the complete command line for the process, unless
              the process is a zombie.  In the latter case, there is nothing
              in this file: that is, a read on this file will return 0
              characters.  The command-line arguments appear in this file as
              a set of strings separated by null bytes ('\0'), with a
              further null byte after the last string.

它可能不会通过 cat 文件为您提供所有参数。