Check process location

1 pwdx

Syntax: pwdx pid

[root@localhost prometheus-2.42.0.linux-amd64]# ps -ef | grep prometheus
root     13820  1361  0 10:56 pts/0    00:00:00 ./prometheus
root     13839  1361  0 10:57 pts/0    00:00:00 grep --color=auto prometheus
[root@localhost prometheus-2.42.0.linux-amd64]# pwdx 13820
13820: /home/qingfeng/soft/prometheus-2.42.0.linux-amd64

2 ls -l /proc/${pid}

When Linux starts a process, the system will create a folder named after the PID under /proc. Under this folder, there will be information about our process, including a file named exe, which records the absolute path. ll or ls –l command to view.

  • The cwd symbolic link is the process running directory;
  • The exe symbolic link is the absolute path to execute the program ;
  • cmdline is the command line command entered when the program is running;
  • environ records the environment variables when the process is running;
  • The fd directory is a symbolic link to the files opened or used by the process.

It can be used in conjunction with grep. For
ls -l /proc/${pid} | grep cwd
ls -l /proc/proc/${pid} | grep exe
example, we already know that the process is 13820, so

[root@localhost prometheus-2.42.0.linux-amd64]# ls -l /proc/13820
总用量 0
dr-xr-xr-x.  2 root root 0 37 11:04 attr
-rw-r--r--.  1 root root 0 37 11:04 autogroup
-r--------.  1 root root 0 37 11:04 auxv
-r--r--r--.  1 root root 0 37 11:04 cgroup
--w-------.  1 root root 0 37 11:04 clear_refs
-r--r--r--.  1 root root 0 37 10:56 cmdline
-rw-r--r--.  1 root root 0 37 11:04 comm
-rw-r--r--.  1 root root 0 37 11:04 coredump_filter
-r--r--r--.  1 root root 0 37 11:04 cpuset
lrwxrwxrwx.  1 root root 0 37 10:58 cwd -> /home/qingfeng/soft/prometheus-2.42.0.linux-amd64
-r--------.  1 root root 0 37 11:04 environ
lrwxrwxrwx.  1 root root 0 37 10:56 exe -> /home/qingfeng/soft/prometheus-2.42.0.linux-amd64/prometheus
dr-x------.  2 root root 0 37 10:56 fd
dr-x------.  2 root root 0 37 11:00 fdinfo
-rw-r--r--.  1 root root 0 37 11:04 gid_map
-r--------.  1 root root 0 37 11:04 io
-r--r--r--.  1 root root 0 37 11:04 latency
-r--r--r--.  1 root root 0 37 10:56 limits
-rw-r--r--.  1 root root 0 37 11:04 loginuid
-rw-r--r--.  1 root root 0 37 11:04 make-it-fail
dr-x------.  2 root root 0 37 11:04 map_files
-r--r--r--.  1 root root 0 37 11:00 maps
-rw-------.  1 root root 0 37 11:04 mem
-r--r--r--.  1 root root 0 37 11:04 mountinfo
-r--r--r--.  1 root root 0 37 11:04 mounts
-r--------.  1 root root 0 37 11:04 mountstats
dr-xr-xr-x.  5 root root 0 37 11:04 net
dr-x--x--x.  2 root root 0 37 11:04 ns
-r--r--r--.  1 root root 0 37 11:04 numa_maps
-rw-r--r--.  1 root root 0 37 11:04 oom_adj
-r--r--r--.  1 root root 0 37 11:04 oom_score
-rw-r--r--.  1 root root 0 37 11:04 oom_score_adj
-r--r--r--.  1 root root 0 37 11:04 pagemap
-r--------.  1 root root 0 37 11:04 patch_state
-r--r--r--.  1 root root 0 37 11:04 personality
-rw-r--r--.  1 root root 0 37 11:04 projid_map
lrwxrwxrwx.  1 root root 0 37 11:00 root -> /
-rw-r--r--.  1 root root 0 37 11:04 sched
-r--r--r--.  1 root root 0 37 11:04 schedstat
-r--r--r--.  1 root root 0 37 11:04 sessionid
-rw-r--r--.  1 root root 0 37 11:04 setgroups
-r--r--r--.  1 root root 0 37 11:04 smaps
-r--r--r--.  1 root root 0 37 11:04 stack
-r--r--r--.  1 root root 0 37 10:56 stat
-r--r--r--.  1 root root 0 37 11:04 statm
-r--r--r--.  1 root root 0 37 10:56 status
-r--r--r--.  1 root root 0 37 11:04 syscall
dr-xr-xr-x. 10 root root 0 37 11:00 task
-r--r--r--.  1 root root 0 37 11:04 timers
-rw-r--r--.  1 root root 0 37 11:04 uid_map
-r--r--r--.  1 root root 0 37 11:04 wchan

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Origin blog.csdn.net/weixin_37909391/article/details/129378315