Stat command filesize reporting on busybox

Busybox can be compiled with ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS which will enable nice among others. Then you can do, for example:

busybox ps -o pid,nice,user,args

POSIX

• user, group, comm, args, pid, ppid, pgid, tty, vsz

ENABLE_FEATURE_PS_TIME

• etime, time

ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS

• nice, rgroup, ruser, pcpu (although pcpu seems to be commented out)

Non-POSIX

• rss

ENABLE_SELINUX

• label

You can find the equivalent information in slightly uglier form (a.k.a. hexadecimal) in /proc/net/tcp. There, you can find the inode of the connection, which you can look up under /proc/$pid/fd/.

For example:

$ cat /proc/net/tcp
sl  local_address rem_address   st tx_queue rx_queue tr tm->when retrnsmt   uid  timeout inode
 0: 00000000:0016 00000000:0000 0A 00000000:00000000 00:00000000 00000000     0        0 6115 1 f5adc4c0 300 0 0 2 -1
...

(In normal netstat, but not in busybox netstat, the -e option also gives you that extra information.)

You can find the process which corresponds to the inode with the following command:

# for x in $(find /proc/ | grep /fd/); do ls -la $x 2>/dev/null done | grep 6115
...
lrwx------ 1 root root 64  7 jan 22.50 /proc/2560/fd/3 -> socket:[6115]

You need root access for the second step.

Not as convenient as the -p option, obviously, but works in a bind. Could be scripted, if necessary.