Linux查看进程的所有子进程和线程

得到进程的pid：
( m9 w/ c* o. U/ W+ u2 Aps -ef | grep process_name | grep -v "grep" | awk '{print $2}'

查看进程的所有线程- D& n! u/ K* r5 ~5 I+ m: ]. V
# ps mp 6648 -o THREAD,tid) d8 w# l3 C8 K- `8 O
USER %CPU PRI SCNT WCHAN USER SYSTEM TID
" y; O0 r. C3 Y- iroot 0.0 - - - - - -8 j5 |5 K% ^" }! P, V! e$ v' L
root 0.0 24 - - - - 6648
- Z; c; Z; C3 @1 ~5 H* G" wroot 0.0 21 - - - - 6650% K3 c/ a# ~3 B. O0 L
root 1.0 24 - - - - 14214
) p; W. Z0 j9 ?( aroot 0.0 23 - futex_ - - 142166 D2 x1 q" j' @
root 0.0 22 - 184466 - - 15374
. Z$ Z$ M) Y$ c! C2 mroot 0.0 23 - 184466 - - 15376
" m  _# P) c( D' Z" X0 _9 xroot 0.0 23 - 184466 - - 15378/ `* K* V  z  v! o
root 0.0 23 - 184466 - - 15380
1 K2 [2 x# M3 H9 \) I& Vroot 0.0 23 - 184466 - - 15392
- G9 y8 U$ z0 w, Rroot 0.0 23 - 184466 - - 15394$ R' L1 A5 }+ e& {6 f
root 0.0 23 - 184466 - - 15398

查看所有子进程：+ R( k+ O" z5 u$ k0 ^- m3 v  m  x: S
# pstree -p 66480 A) y* }5 m% H2 ^
agent_executor(6648)─┬─tar(15601)───gzip(15607)
( U2 J! z2 b  Y' E5 o9 K2 N# Y├─{agent_executor}(6650)! ]7 \( S- L# E* D4 ?6 t3 N2 s: y
├─{agent_executor}(14214)
+ I4 |  H$ p# U; j7 J7 {( u├─{agent_executor}(14216)/ d. ^" ~1 a+ l7 k/ j# r6 p
├─{agent_executor}(15374)
0 |  i5 @4 d- y8 @6 J├─{agent_executor}(15376)# P, Z! o0 Y7 e$ `" o
├─{agent_executor}(15378)9 C7 ]4 Z4 k: g7 ~
├─{agent_executor}(15380)
; k0 v' q2 r. \6 H7 C├─{agent_executor}(15392)
! ^& B! m2 W2 B; g* l├─{agent_executor}(15394)
4 ]5 C# M  k0 K└─{agent_executor}(15398)

查看/proc/pid/status可以看到一些进程的当前状态：

Name: bash2 k( ]7 J/ Y4 x  D! r+ V6 r# m
State: S (sleeping)
' u- x8 W% i* ]SleepAVG: 98%4 M, p! v( ?# L
Tgid: 11237
- }# Z3 [$ A4 p) k0 WPid: 11237
) `8 j0 l' v* s6 L# [! j  g6 b1 b( LPPid: 11235
! P8 ?+ N# N6 y; q9 HTracerPid: 0
0 U  R* B* N5 J3 r0 e! sUid: 0 0 0 0
$ l! m6 S) A' w8 qGid: 0 0 0 0# E3 Q. C/ I2 l( G5 m1 u: g
FDSize: 256
% a' O6 A" a" ]) ]  wGroups: 0 1 2 3 4 6 10
2 J" w1 L" r: ]6 F' yVmPeak: 66260 kB! d) f; U  {9 y% Q
VmSize: 66228 kB; q) ~* u. J$ z: I+ i. ^0 ?
VmLck: 0 kB
& C/ B" t: u9 x: M3 J5 UVmHWM: 1684 kB( `* ~% D3 h7 r7 _. c
VmRSS: 1684 kB5 Q. w# b: t1 d6 x6 p' F5 ~3 K
VmData: 456 kB" U1 m. v; c  ]1 e+ @
VmStk: 88 kB
9 p+ e& k" V6 ~" @% R7 u$ |1 |VmExe: 712 kB. D  e; w% t6 Z5 Q: h6 b1 |
VmLib: 1508 kB
/ a) m! C! I1 P3 ^8 m, i2 K- f7 JVmPTE: 68 kB, l/ `2 W3 J2 N8 q( c6 l
StaBrk: 008c3000 kB  ^: V- r! F6 d, B8 g  {
Brk: 011b1000 kB& {* o) `- }( H: t; L, @: E9 }
StaStk: 7fff8b728170 kB
- Q. {6 a, j/ q5 R: [1 `" Q; [Threads: 14 F9 V/ |& V/ d8 @& Y' R3 O( m7 v
SigQ: 1/30222
) s( Y" B- T% cSigPnd: 00000000000000001 y4 M4 f6 _9 |4 {3 r  J! r" j
ShdPnd: 0000000000000000
1 S! c$ M2 _, O) U6 q, ^0 ySigBlk: 0000000000010000
( S6 f  U6 H- t- o! h6 MSigIgn: 0000000000384004+ A: A4 ]( d& `- F3 [& t6 n- W
SigCgt: 000000004b813efb
3 k1 r) V4 A# J7 M$ u  LCapInh: 0000000000000000# \8 L; R9 Y! Z& f9 S$ y1 T
CapPrm: 00000000fffffeff
1 I2 L5 o# @& w3 B; PCapEff: 00000000fffffeff8 [7 |* F: x# f/ p
Cpus_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000003
( h5 {+ F. p% J: PMems_allowed: 1