Adb shell closes the process

Because the parameters following the kill command in the adb shell are pid, ps all applications first:
Adb is in shell

Root @ android:/# ps

USER PID PPID VSIZE RSS WCHAN PC NAME
Root 1 0 676 528 c0159a18 000102f4 S/init
Root 2 0 0 0 c00741c8 00000000 S kthreadd
Root 3 2 0 0 c005a2d8 00000000 S ksoftirqd/0
Root 4 2 0 0 c006f388 00000000 S kworker/0: 0
Root 5 2 0 0 c006f388 00000000 S kworker/u: 0
Root 6 2 0 0 c00d54f4 00000000 S migration/0
Root 10 2 0 0 c006f6b4 00000000 S khelper
Root 11 2 0 0 c006f6b4 00000000 S fs_sync
Root 12 2 0 0 c006f6b4 00000000 S suspend
Root 13 2 0 0 c0126ee0 00000000 S sync_supers
Root 14 2 0 0 c01_f4c 00000000 S bdi-default
Root 15 2 0 0 c006f6b4 00000000 S kblockd
Root 16 2 0 0 c0315cb8 00000000 S khubd
Root 18 2 0 0 c006f6b4 00000000 S limit 80211
Root 19 2 0 0 c045899c 00000000 D pmic_thread_kth
Root 20 2 0 0 c011fa60 00000000 S kswapd0
Root 21 2 0 0 c0184ebc 00000000 S fsnotify_mark
Root 22 2 0 0 c006f6b4 00000000 S crypto
Root 44 2 0 0 c006230c 00000000 D binder_watchdog
Root 45 2 0 0 c006f6b4 00000000 S binder
Root 47 2 0 0 c03d6a18 00000000 D bat_thread_kthr
Root 48 2 0 0 c03d6cb8 00000000 S mtk charger_hv _
Root 49 2 0 0 c006f6b4 00000000 S btif_rxd
Root 50 2 0 0 c006f6b4 00000000 S trace mon
Root 51 2 0 0 c04b653c 00000000 S disp_config_upd
Root 52 2 0 0 c006f6b4 00000000 S mtk_vibrator
Root 53 2 0 0 c006230c 00000000 D esd_recovery_kt
Root 54 2 0 0 c0073d6c 00000000 D disp_captureovl
Root 55 2 0 0 c03db168 00000000 S disp_capturefb _
Root 56 2 0 0 0 c03dd3bc 00000000 S disp_config_upd
Root 57 2 0 0 c0w.cc 00000000 S mmcqd/0
Root 58 2 0 0 c01_cc 00000000 S mmcqd/0boot0
Root 59 2 0 0 c01_cc 00000000 S mmcqd/0boot1
Root 60 2 0 0 c006f6b4 00000000 S accdet
Root 61 2 0 0 c04c2bd4 00000000 S keyEvent_send
Root 62 2 0 0 c006f6b4 00000000 S accdet_eint
Root 63 2 0 0 c02d4c58 00000000 S kworker/u: 2
Root 64 2 0 0 c006f6b4 00000000 S accdet_disable
Root 65 2 0 0 c01_cc 00000000 S mmcqd/1
Root 67 2 0 0 c042a0ec 00000000 S mtk-tpd
Root 68 2 0 0 c003a5b8 00000000 S mt_gpufreq
Root 69 2 0 0 c006f6b4 00000000 S deferwq
Root 70 2 0 0 c006f6b4 00000000 S f_mtp
Root 71 2 0 0 c033e6b8 00000000 S file-storage
Root 72 2 0 0 c006230c 00000000 D wdtk-0
Root 73 2 0 0 c006230c 00000000 D wdtk-1
Root 74 1 436 232 c0159a18 000102f4 S/sbin/ueventd
Root 76 2 0 0 c02239d0 00000000 S jbd2/mmcblk0p5-
Root 77 2 0 0 c006f6b4 00000000 S ext4-dio-unwrit
Root 78 2 0 0 c016fb60 00000000 S flush-179: 0
Root 82 2 0 0 c02239d0 00000000 S jbd2/mmcblk0p7-
Root 83 2 0 0 c006f6b4 00000000 S ext4-dio-unwrit
Root 88 2 0 0 c02239d0 00000000 S jbd2/mmcblk0p6-
Root 89 2 0 0 c006f6b4 00000000 S ext4-dio-unwrit
Root 94 2 0 0 c02239d0 00000000 S jbd2/mmcblk0p4-
Root 95 2 0 0 c006f6b4 00000000 S ext4-dio-unwrit
Root 98 2 0 0 c02239d0 00000000 S jbd2/mmcblk0p2-
Root 99 2 0 0 c006f6b4 00000000 S ext4-dio-unwrit
Root 102 2 0 0 c02239d0 00000000 S jbd2/mmcblk0p3-
Root 103 2 0 0 c006f6b4 00000000 S ext4-dio-unwrit
Root 104 2 0 0 c02d99f4 00000000 S loop0
Root 123 2 0 0 bf04cec8 00000000 S mtk_stp_psm
Root 124 2 0 0 bf04cec8 00000000 S mtk_stp_btm
Root 125 2 0 0 bf04ccd4 00000000 S mtk_wmtd
Root 126 2 0 0 c006f6b4 00000000 S fm_timer_wq
Root 127 2 0 0 c006f6b4 00000000 S fm_eint_wq
System 130 1 1092 396 c03a3c2c 400b9318 S/system/bin/servicemanager
Root 131 1 4532 1104 ffffffff 40135ac4 S/system/bin/vold
System 132 1 944 412 c02b7f8c 400870a8 S/system/bin/logwrapper
Ccci 133 1 1468 596 bf1484ec 400da318 S/system/bin/ccci_fsd
System 134 1 948 368 bf144128 4012d0a8 S/system/bin/ccci_mdinit
Root 135 1 1788 764 c0159a18 400ff2c4 S/system/bin/debugadh
Shell 136 1 3052 1284 ffffffff 40147ac4 S/system/bin/mobile_log_d
Root 137 1 10016 1240 ffffffff 400e0ac4 S/system/bin/netd
Shell 138 1 4608 888 ffffffff 40206470 S/system/bin/netdiag
System 141 1 40452 12396 ffffffff 400b2318 S/system/bin/surfaceflinger
System 142 132 1092 424 c0159a18 400de2c4 S/system/bin/6620_launcher
Root 143 1 288552 41444 ffffffff 400ea43c S zygote
System 144 1 3320 580 ffffffff 400b4ac4 S/system/bin/hald
Drm 145 1 19032 6716 ffffffff 4014b318 S/system/bin/drmserver
Media 146 1 48236 9928 ffffffff 4013d318 S/system/bin/mediaserver
Media 147 1 21040 6360 ffffffff 400bc318 S/system/bin/vtservice
System 148 1 4556 732 ffffffff 400d0318 S/system/bin/matv
Bluetooth 149 1 1612 768 c0159a18 401782c4 S/system/bin/container-daemon
Install 150 1 1120 540 c059aed8 4005a0a8 S/system/bin/installd
Keystore 151 1 2148 964 c04e0e94 40090dc8 S/system/bin/keystore
Gps 152 1 15780 1592 ffffffff 40102470 S/system/bin/mtk_agpsd
Shell 153 1 1092 404 c0079120 400a6ac4 S/system/bin/batterywarning
Root 159 1 16268 3568 ffffffff 400c9ac4 S/system/bin/atci_service
Root 160 1 1236 496 c0159a18 4005b43c S/system/bin/atcid
System 161 1 4720 852 ffffffff 40112318 S/system/bin/dm_agent_binder
Bluetooth 162 1 4484 1096 ffffffff 402eb43c S/system/bin/mtkbt
System 164 1 4704 812 ffffffff 40094318 S/system/bin/GoogleOtaBinder
Root 166 1 14092 5020 ffffffff 400c4ac4 S/system/bin/em_svr
System 167 1 4660 800 ffffffff 400b0318 S/system/bin/nvram_agent_binder
System 169 1 1120 420 c0079120 4004fac4 S/system/bin/thermal
System 170 1 1088 396 c0079120 4010bac4 S/system/bin/thermald
Root 174 1 1280 604 c02b7f8c 4008a0a8 S/system/bin/sh
Root 178 1 4640 368 ffffffff 00018498 S/sbin/adbd
Radio 417 1 16504 624 ffffffff 40067ac4 S/system/bin/gsm0710muxd
Shell 418 1 5076 804 ffffffff 4009d128 S/system/bin/mdlogger
Radio 509 1 30604 1284 ffffffff 400a8ac4 S/system/bin/rild
System 554 143 448000 60392 ffffffff 400ea318 S system_server
U0_a32 725 143 301012 ffffffff 400eb24c S com. android. inputmethod. latin
Radio 744 143 327000 35292 ffffffff 400eb24c S com. android. phone
System 749 143 298652 23600 ffffffff 400eb24c S com. mediatek. voicecommand
U0_a41 771 143 298940 ffffffff 400eb24c S com. mediatek. bluetooth
U0_a33 788 143 327684 ffffffff 400eb24c S com. android. launcher
U0_a11 802 143 308124 24724 ffffffff 400eb24c S com. google. process. location
U0_a11 833 143 311800 29308 ffffffff 400eb24c S com. google. process. gapps
U0_a42 1106 143 303580 ffffffff 400eb24c S com. mediatek. mtklogger
System 1126 143 299136 22636 ffffffff 400eb24c S com. mediatek. atci. service
U0_a54 1447 143 324520 ffffffff 400eb24c S com. android. vending
System 1480 143 298168 23868 ffffffff 400eb24c S com. mediatek. schpw0000ff
U0_a45 1526 143 298052 23848 ffffffff 400eb24c S com. mediatek. appwidget. weather
U0_a44 1539 143 299376 ffffffff 400eb24c S com. mediatek. weather
Root 1742 2 0 0 c006f388 00000000 S kworker/u: 3
Root 1743 2 0 0 c006f388 00000000 S kworker/u: 4
Root 1839 2 0 0 c006f388 00000000 S kworker/
System 1957 143 322144 35244 ffffffff 400eb24c S com. android. settings
Root 2105 178 1628 1064 c0159a18 4014843c S logcat
U0_a62 2114 143 327356 ffffffff 400eb24c S com. android. systemui
U0_a5 2264 143 367484 55736 ffffffff 400eb24c S com. android. browser
Root 2350 2 0 0 c006f388 00000000 S kworker/0: 2
U0_a64 2386 143 298180 24452 ffffffff 400eb24c S com. dewav. timewidget
Root 2403 2 0 0 c016fb60 00000000 S flush-179: 96
U0_a2 2409 143 326176 34404 ffffffff 400eb24c S android. process. acore
Root 2428 2 0 0 c00d54f4 00000000 S migration/1
Root 2429 2 0 0 c006f388 00000000 S kworker/1:0
Root 2430 2 0 0 c005a2d8 00000000 S ksoftirqd/1
Root 2431 2 0 0 c006f388 00000000 S kworker/
U0_a17 2434 143 304800 ffffffff 400eb24c S android. process. media
Root 2455 178 1280 624 c0011564 40134ca4 S/system/bin/sh

Root 2459 2455 1360 504 00000000 400fa0a8 R ps

For example, disable systemui:

Under adb shell:

Killed 2114