expect产生大量僵尸进程

使用top工具，发现有大量僵尸进程

top - 05:32:34 up  6:21,  2 users,  load average: 8.13, 6.15, 4.83
Tasks: 870 total,   1 running, 859 sleeping,   0 stopped,  10 zombie
%Cpu(s):  0.7 us,  0.3 sy,  0.0 ni, 94.2 id,  4.4 wa,  0.1 hi,  0.2 si,  0.0 st
MiB Mem : 127955.6 total, 106662.2 free,  16308.0 used,   5954.3 buff/cache
MiB Swap:      0.0 total,      0.0 free,      0.0 used. 111647.5 avail Mem 

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                                                        
 354979 root      20   0       0      0      0 Z   0.0   0.0   0:00.03 git                                                                                                            
 355152 root      20   0       0      0      0 Z   0.0   0.0   0:00.00 git                                                                                                            
 532213 root      20   0       0      0      0 Z   0.0   0.0   0:00.04 git                                                                                                            
 532326 root      20   0       0      0      0 Z   0.0   0.0   0:00.00 git                                                                                                            
 541983 root      20   0       0      0      0 Z   0.0   0.0   0:00.03 git                                                                                                            
 542101 root      20   0       0      0      0 Z   0.0   0.0   0:00.00 git                                                                                                            
 670442 root      20   0       0      0      0 Z   0.0   0.0   0:00.03 git                                                                                                            
 670528 root      20   0       0      0      0 Z   0.0   0.0   0:00.00 git                                                                                                            
 672835 root      20   0       0      0      0 Z   0.0   0.0   0:00.04 git      
#安装两个工具
[root@sc-midware-1 ~]#  dnf install -y procps && dnf install psmisc -y

[root@sc-midware-1 ~]# pstree -apscl 354979
systemd,1 --switched-root --system --deserialize 31
  └─containerd-shim,10835 -namespace k8s.io -id b8200d8cad653f1eeeae8afb7cd901b7d368a8b3381b4939563398075df8611c -address /run/containerd/containerd.sock
      └─sleep,11681 --coreutils-prog-shebang=sleep /usr/bin/sleep 30000s
          └─(git,354979)

发现僵尸进程是由expect调用git导致的

从网上找资料，发现expect退出的时候，需要等待杀死子进程，需要在expect中加入wait指令

function privateRepo(){

/usr/bin/expect