1, showing the largest memory footprint statistical process system, and sorting.
method one
[root@test ~]#ps aux --sort=%mem USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 2 0.0 0.0 0 0 ? S Sep20 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S Sep20 0:18 [ksoftirqd/0] root 5 0.0 0.0 0 0 ? S< Sep20 0:00 [kworker/0:0H] root 7 0.0 0.0 0 0 ? S Sep20 0:00 [migration/0] root 8 0.0 0.0 0 0 ? S Sep20 0:00 [rcu_bh] root 9 0.0 0.0 0 0 ? R Sep20 7:21 [rcu_sched] root 10 0.0 0.0 0 0 ? S< Sep20 0:00 [lru-add-drain] root 11 0.0 0.0 0 0 ? S Sep20 0:18 [watchdog/0] root 13 0.0 0.0 0 0 ? S Sep20 0:00 [kdevtmpfs] root 14 0.0 0.0 0 0 ? S< Sep20 0:00 [netns] root 15 0.0 0.0 0 0 ? S Sep20 0:01 [khungtaskd] root 16 0.0 0.0 0 0 ? S< Sep20 0:00 [writeback] root 17 0.0 0.0 0 0 ? S< Sep20 0:00 [kintegrityd] root 18 0.0 0.0 0 0 ? S< Sep20 0:00 [bioset] root 19 0.0 0.0 0 0 ? S< Sep20 0:00 [bioset] root 20 0.0 0.0 0 0 ? S< Sep20 0:00 [bioset] root 21 0.0 0.0 0 0 ? S< Sep20 0:00 [kblockd] root 22 0.0 0.0 0 0 ? S< Sep20 0:00 [md] root 23 0.0 0.0 0 0 ? S< Sep20 0:00 [edac-poller] root 24 0.0 0.0 0 0 ? S< Sep20 0:00 [watchdogd] root 30 0.0 0.0 0 0 ? S Sep20 0:01 [kswapd0] root 31 0.0 0.0 0 0 ? SN Sep20 0:00 [ksmd] root 32 0.0 0.0 0 0 ? SN Sep20 0:08 [khugepaged] root 33 0.0 0.0 0 0 ? S< Sep20 0:00 [crypto] root 41 0.0 0.0 0 0 ? S< Sep20 0:00 [kthrotld] root 43 0.0 0.0 0 0 ? S< Sep20 0:00 [kmpath_rdacd] root 44 0.0 0.0 0 0 ? S< Sep20 0:00 [kaluad] root 45 0.0 0.0 0 0 ? S< Sep20 0:00 [kpsmoused] root 46 0.0 0.0 0 0 ? S< Sep20 0:00 [ipv6_addrconf] root 59 0.0 0.0 0 0 ? S< Sep20 0:00 [deferwq] root 90 0.0 0.0 0 0 ? S Sep20 0:00 [kauditd] root 244 0.0 0.0 0 0 ? S< Sep20 0:00 [ata_sff] root 260 0.0 0.0 0 0 ? S Sep20 0:00 [scsi_eh_0] root 261 0.0 0.0 0 0 ? S< Sep20 0:00 [scsi_tmf_0] root 262 0.0 0.0 0 0 ? S Sep20 0:00 [scsi_eh_1] root 263 0.0 0.0 0 0 ? S< Sep20 0:00 [scsi_tmf_1] root 266 0.0 0.0 0 0 ? S< Sep20 0:00 [ttm_swap] root 274 0.0 0.0 0 0 ? S< Sep20 0:16 [kworker/0:1H] root 283 0.0 0.0 0 0 ? S Sep20 0:30 [jbd2/vda1-8] root 284 0.0 0.0 0 0 ? S< Sep20 0:00 [ext4-rsv-conver] root 485 0.0 0.0 0 0 ? S< Sep20 0:00 [nfit] root 2858 0.0 0.0 0 0 ? S Nov01 0:02 [kworker/u2:1] root 6330 0.0 0.0 0 0 ? S Oct31 0:12 [kworker/u2:2] root 10504 0.0 0.0 0 0 ? R 14:28 0:00 [kworker/0:1] root 29972 0.0 0.0 0 0 ? S Nov20 0:00 [kworker/0:2] root 531 0.0 0.0 110104 860 tty1 Ss+ Sep20 0:00 /sbin/agetty --noclear tty1 linux root 530 0.0 0.0 110104 876 ttyS0 Ss+ Sep20 0:00 /sbin/agetty --keep-baud 115200,38400,9600 ttyS0 vt220 root 525 0.0 0.0 25904 956 ? Ss Sep20 0:00 /usr/sbin/atd -f root 490 0.0 0.0 55520 1104 ? S<sl Sep20 0:05 /sbin/auditd root 12552 0.0 0.0 127768 1412 ? Ss Nov05 0:00 SCREEN -S jupyerhub root 12341 0.0 0.0 127900 1496 ? Ss Nov05 0:00 SCREEN -A jupyterhub root 14271 0.0 0.0 99980 1600 ? Sl Oct31 0:00 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 2021 -container-ip 172.17.0.2 -container-port root 14251 0.0 0.0 99980 1604 ? Sl Oct31 0:01 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 8888 -container-ip 172.17.0.2 -container-port root 14261 0.0 0.0 99980 1604 ? Sl Oct31 0:01 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 2031 -container-ip 172.17.0.2 -container-port root 527 0.0 0.0 126288 1624 ? Ss Sep20 0:09 /usr/sbin/crond -n root 14290 0.0 0.0 18364 1644 pts/2 Ss+ Oct31 0:00 /bin/bash /etc/gaga.sh root 519 0.0 0.0 26376 1744 ? Ss Sep20 0:15 /usr/lib/systemd/systemd-logind root 874 0.0 0.0 115436 1768 ? S Sep20 0:00 /bin/sh /application/mysql-5.6.42/bin/mysqld_safe --datadir=/application/mysql-5.6.42/data --pid-file=/app chrony 537 0.0 0.0 117784 1876 ? S Sep20 0:15 /usr/sbin/chronyd root 14275 0.0 0.1 264004 1900 ? Sl Oct31 0:01 docker-containerd-shim b06a869d21137a3dddbb60335a8adc23aaa1066c718ffc3439e65ade04e1e766 /var/run/docker/li root 608 0.0 0.1 155496 1924 pts/0 R+ 22:04 0:00 ps aux --sort=%mem root 752 0.0 0.1 107464 2156 ? Ss Sep20 0:00 /sbin/dhclient -1 -q -lf /var/lib/dhclient/dhclient--eth0.lease -pf /var/run/dhclient-eth0.pid -H qiuping root 374 0.0 0.1 45012 2196 ? Ss Sep20 0:00 /usr/lib/systemd/systemd-udevd root 905 0.0 0.1 125116 2272 ? Ss Nov02 0:00 nginx: master process /usr/sbin/nginx dbus 513 0.0 0.1 58220 2292 ? Ss Sep20 0:28 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation 33 14402 0.0 0.1 33428 2432 pts/2 S Oct31 0:03 nginx: worker process root 12553 0.0 0.1 116388 3004 pts/4 Ss+ Nov05 0:00 /bin/bash root 14395 0.0 0.1 32720 3184 pts/2 S Oct31 0:00 nginx: master process /usr/sbin/nginx -g daemon off; root 820 0.0 0.1 41072 3220 ? Ssl Sep20 37:17 /usr/sbin/aliyun-service root 548 0.1 0.1 116628 3244 pts/0 Ss 22:04 0:00 -bash jupyter 12639 0.0 0.1 116840 3404 pts/5 Ss+ Nov05 0:00 /bin/bash -l root 14397 0.0 0.1 237312 3468 pts/2 Sl Oct31 0:01 /usr/bin/duckchat-gateway-ubuntu -httpBackend=http://127.0.0.1/ 1>/dev/null root 1 0.0 0.1 125460 3584 ? Ss Sep20 11:12 /usr/lib/systemd/systemd --switched-root --system --deserialize 22 nginx 906 0.0 0.2 125888 4052 ? S Nov02 0:03 nginx: worker process root 12512 0.0 0.2 32528 4228 ? S<sl Nov19 1:35 /usr/local/aegis/aegis_update/AliYunDunUpdate root 1125 0.0 0.2 112864 4340 ? Ss Sep20 0:00 /usr/sbin/sshd -D root 534 0.1 0.3 157388 5984 ? Ss 22:04 0:00 sshd: root@pts/0 root 821 0.0 0.3 362012 6508 ? Ssl Sep20 3:44 /usr/sbin/rsyslogd -n root 1113 0.0 0.4 242200 9324 ? Ssl Sep20 46:15 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --st 65534 28829 0.0 0.5 439336 9536 pts/2 S Nov21 0:00 php-fpm: pool www root 351 0.0 0.5 47328 9628 ? Ss Sep20 0:15 /usr/lib/systemd/systemd-journald 65534 1944 0.0 0.5 439532 10600 pts/2 S Nov19 0:00 php-fpm: pool www 65534 18283 0.0 0.5 439532 10604 pts/2 S Nov19 0:00 php-fpm: pool www 65534 30518 0.0 0.5 439532 10612 pts/2 S Nov17 0:00 php-fpm: pool www polkitd 521 0.0 0.6 716592 11452 ? Ssl Sep20 0:11 /usr/lib/polkit-1/polkitd --no-debug 65534 4633 0.0 0.6 439532 12620 pts/2 S Nov19 0:00 php-fpm: pool www 65534 13194 0.0 0.6 439676 12644 pts/2 S Nov18 0:00 php-fpm: pool www 65534 8699 0.0 0.6 439704 13088 pts/2 S Nov16 0:00 php-fpm: pool www root 815 0.0 0.7 573920 14744 ? Ssl Sep20 9:33 /usr/bin/python2 -Es /usr/sbin/tuned -l -P root 12586 1.5 0.8 132912 15116 ? S<sl Nov19 78:05 /usr/local/aegis/aegis_client/aegis_10_75/AliYunDun root 14396 0.0 0.9 438808 16952 pts/2 S Oct31 1:29 php-fpm: master process (/etc/php/7.2/fpm/php-fpm.conf) root 14391 0.0 0.9 54812 16956 pts/2 S+ Oct31 6:54 /usr/bin/python /usr/bin/supervisord --nodaemon --configuration /etc/supervisor/supervisord.conf root 1460 0.0 1.2 613004 24204 ? Ssl Sep20 0:27 PM2 v3.5.1: God Daemon (/root/.pm2) root 818 0.0 1.5 737300 29832 ? Ssl Sep20 68:25 /usr/bin/dockerd root 12348 0.0 1.7 571116 32760 ? Ssl Nov05 0:06 node /root/download/node/bin/configurable-http-proxy --ip --port 8000 --api-ip 127.0.0.1 --api-port 8001 root 819 0.3 1.8 993740 34320 ? Ssl Sep20 339:30 /usr/bin/taosd root 23187 0.0 1.8 256672 35464 ? S Oct22 5:39 python app.py runserver -h 0.0.0.0 root 12342 0.0 2.7 766296 52152 pts/3 Ssl+ Nov05 3:39 /usr/local/bin/python3.6 /usr/local/bin/jupyterhub jupyter 12617 0.0 3.3 719872 63920 ? Ssl Nov05 0:14 /usr/local/bin/python3.6 /usr/local/bin/jupyterhub-singleuser --port=53971 mysql 18832 0.0 6.3 995620 119772 ? Sl Nov20 1:21 /application/mysql-5.6.42/bin/mysqld --basedir=/application/mysql-5.6.42 --datadir=/application/mysql-5.6. 101 14398 0.0 9.0 1153192 170700 pts/2 Sl Oct31 18:43 /usr/sbin/mysqld --user=root root 1066 0.1 14.7 2569628 277748 ? Sl Nov02 37:15 /usr/java/latest/bin/java -Djava.util.logging.config.file=/usr/local/tomcat//conf/logging.properties -Djav [root@test ~]#
Description: - sort is to specify the sort order of a field
Method Two
[root@test ~]#ps aux |awk '{if(NR != 1){print $4,$0}}'|sort -n
0.0 chrony 537 0.0 0.0 117784 1876 ? S Sep20 0:15 /usr/sbin/chronyd
0.0 root 10 0.0 0.0 0 0 ? S< Sep20 0:00 [lru-add-drain]
0.0 root 10504 0.0 0.0 0 0 ? S 14:28 0:00 [kworker/0:1]
0.0 root 1081 0.0 0.0 113544 976 pts/0 S+ 22:13 0:00 awk {if(NR != 1){print $4,$0}}
0.0 root 1082 0.0 0.0 116500 920 pts/0 S+ 22:13 0:00 sort -n
0.0 root 11 0.0 0.0 0 0 ? S Sep20 0:18 [watchdog/0]
0.0 root 12341 0.0 0.0 127900 1496 ? Ss Nov05 0:00 SCREEN -A jupyterhub
0.0 root 12552 0.0 0.0 127768 1412 ? Ss Nov05 0:00 SCREEN -S jupyerhub
0.0 root 13 0.0 0.0 0 0 ? S Sep20 0:00 [kdevtmpfs]
0.0 root 14 0.0 0.0 0 0 ? S< Sep20 0:00 [netns]
0.0 root 14251 0.0 0.0 99980 1604 ? Sl Oct31 0:01 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 8888 -container-ip 172.17.0.2 -container-port 80
0.0 root 14261 0.0 0.0 99980 1604 ? Sl Oct31 0:01 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 2031 -container-ip 172.17.0.2 -container-port 2031
0.0 root 14271 0.0 0.0 99980 1600 ? Sl Oct31 0:00 /usr/bin/docker-proxy -proto tcp -host-ip 0.0.0.0 -host-port 2021 -container-ip 172.17.0.2 -container-port 2021
0.0 root 14290 0.0 0.0 18364 1644 pts/2 Ss+ Oct31 0:00 /bin/bash /etc/gaga.sh
0.0 root 15 0.0 0.0 0 0 ? S Sep20 0:01 [khungtaskd]
0.0 root 16 0.0 0.0 0 0 ? S< Sep20 0:00 [writeback]
0.0 root 17 0.0 0.0 0 0 ? S< Sep20 0:00 [kintegrityd]
0.0 root 18 0.0 0.0 0 0 ? S< Sep20 0:00 [bioset]
0.0 root 19 0.0 0.0 0 0 ? S< Sep20 0:00 [bioset]
0.0 root 20 0.0 0.0 0 0 ? S< Sep20 0:00 [bioset]
0.0 root 2 0.0 0.0 0 0 ? S Sep20 0:00 [kthreadd]
0.0 root 21 0.0 0.0 0 0 ? S< Sep20 0:00 [kblockd]
0.0 root 22 0.0 0.0 0 0 ? S< Sep20 0:00 [md]
0.0 root 23 0.0 0.0 0 0 ? S< Sep20 0:00 [edac-poller]
0.0 root 24 0.0 0.0 0 0 ? S< Sep20 0:00 [watchdogd]
0.0 root 244 0.0 0.0 0 0 ? S< Sep20 0:00 [ata_sff]
0.0 root 260 0.0 0.0 0 0 ? S Sep20 0:00 [scsi_eh_0]
0.0 root 261 0.0 0.0 0 0 ? S< Sep20 0:00 [scsi_tmf_0]
0.0 root 262 0.0 0.0 0 0 ? S Sep20 0:00 [scsi_eh_1]
0.0 root 263 0.0 0.0 0 0 ? S< Sep20 0:00 [scsi_tmf_1]
0.0 root 266 0.0 0.0 0 0 ? S< Sep20 0:00 [ttm_swap]
0.0 root 274 0.0 0.0 0 0 ? S< Sep20 0:16 [kworker/0:1H]
0.0 root 283 0.0 0.0 0 0 ? S Sep20 0:30 [jbd2/vda1-8]
0.0 root 284 0.0 0.0 0 0 ? S< Sep20 0:00 [ext4-rsv-conver]
0.0 root 2858 0.0 0.0 0 0 ? S Nov01 0:02 [kworker/u2:1]
0.0 root 29972 0.0 0.0 0 0 ? S Nov20 0:00 [kworker/0:2]
0.0 root 30 0.0 0.0 0 0 ? S Sep20 0:01 [kswapd0]
0.0 root 3 0.0 0.0 0 0 ? S Sep20 0:18 [ksoftirqd/0]
0.0 root 31 0.0 0.0 0 0 ? SN Sep20 0:00 [ksmd]
0.0 root 32 0.0 0.0 0 0 ? SN Sep20 0:08 [khugepaged]
0.0 root 33 0.0 0.0 0 0 ? S< Sep20 0:00 [crypto]
0.0 root 41 0.0 0.0 0 0 ? S< Sep20 0:00 [kthrotld]
0.0 root 43 0.0 0.0 0 0 ? S< Sep20 0:00 [kmpath_rdacd]
0.0 root 44 0.0 0.0 0 0 ? S< Sep20 0:00 [kaluad]
0.0 root 45 0.0 0.0 0 0 ? S< Sep20 0:00 [kpsmoused]
0.0 root 46 0.0 0.0 0 0 ? S< Sep20 0:00 [ipv6_addrconf]
0.0 root 485 0.0 0.0 0 0 ? S< Sep20 0:00 [nfit]
0.0 root 490 0.0 0.0 55520 1104 ? S<sl Sep20 0:05 /sbin/auditd
0.0 root 5 0.0 0.0 0 0 ? S< Sep20 0:00 [kworker/0:0H]
0.0 root 519 0.0 0.0 26376 1744 ? Ss Sep20 0:15 /usr/lib/systemd/systemd-logind
0.0 root 525 0.0 0.0 25904 956 ? Ss Sep20 0:00 /usr/sbin/atd -f
0.0 root 527 0.0 0.0 126288 1624 ? Ss Sep20 0:09 /usr/sbin/crond -n
0.0 root 530 0.0 0.0 110104 876 ttyS0 Ss+ Sep20 0:00 /sbin/agetty --keep-baud 115200,38400,9600 ttyS0 vt220
0.0 root 531 0.0 0.0 110104 860 tty1 Ss+ Sep20 0:00 /sbin/agetty --noclear tty1 linux
0.0 root 59 0.0 0.0 0 0 ? S< Sep20 0:00 [deferwq]
0.0 root 6330 0.0 0.0 0 0 ? S Oct31 0:12 [kworker/u2:2]
0.0 root 7 0.0 0.0 0 0 ? S Sep20 0:00 [migration/0]
0.0 root 8 0.0 0.0 0 0 ? S Sep20 0:00 [rcu_bh]
0.0 root 874 0.0 0.0 115436 1768 ? S Sep20 0:00 /bin/sh /application/mysql-5.6.42/bin/mysqld_safe --datadir=/application/mysql-5.6.42/data --pid-file=/application/mysql-5.6.42/data/qiuping.pid
0.0 root 90 0.0 0.0 0 0 ? S Sep20 0:00 [kauditd]
0.0 root 9 0.0 0.0 0 0 ? R Sep20 7:21 [rcu_sched]
0.1 33 14402 0.0 0.1 33428 2432 pts/2 S Oct31 0:03 nginx: worker process
0.1 dbus 513 0.0 0.1 58220 2292 ? Ss Sep20 0:28 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
0.1 jupyter 12639 0.0 0.1 116840 3404 pts/5 Ss+ Nov05 0:00 /bin/bash -l
0.1 root 1 0.0 0.1 125460 3584 ? Ss Sep20 11:12 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
0.1 root 1080 0.0 0.1 155360 1892 pts/0 R+ 22:13 0:00 ps aux
0.1 root 12553 0.0 0.1 116388 3004 pts/4 Ss+ Nov05 0:00 /bin/bash
0.1 root 14275 0.0 0.1 264004 1900 ? Sl Oct31 0:01 docker-containerd-shim b06a869d21137a3dddbb60335a8adc23aaa1066c718ffc3439e65ade04e1e766 /var/run/docker/libcontainerd/b06a869d21137a3dddbb60335a8adc23aaa1066c718ffc3439e65ade04e1e766 docker-runc
0.1 root 14395 0.0 0.1 32720 3184 pts/2 S Oct31 0:00 nginx: master process /usr/sbin/nginx -g daemon off;
0.1 root 14397 0.0 0.1 237312 3468 pts/2 Sl Oct31 0:01 /usr/bin/duckchat-gateway-ubuntu -httpBackend=http://127.0.0.1/ 1>/dev/null
0.1 root 374 0.0 0.1 45012 2196 ? Ss Sep20 0:00 /usr/lib/systemd/systemd-udevd
0.1 root 548 0.0 0.1 116628 3252 pts/0 Ss 22:04 0:00 -bash
0.1 root 752 0.0 0.1 107464 2156 ? Ss Sep20 0:00 /sbin/dhclient -1 -q -lf /var/lib/dhclient/dhclient--eth0.lease -pf /var/run/dhclient-eth0.pid -H qiuping eth0
0.1 root 820 0.0 0.1 41072 3220 ? Ssl Sep20 37:17 /usr/sbin/aliyun-service
0.1 root 905 0.0 0.1 125116 2272 ? Ss Nov02 0:00 nginx: master process /usr/sbin/nginx
0.2 nginx 906 0.0 0.2 125888 4052 ? S Nov02 0:03 nginx: worker process
0.2 root 1125 0.0 0.2 112864 4340 ? Ss Sep20 0:00 /usr/sbin/sshd -D
0.2 root 12512 0.0 0.2 32528 4228 ? S<sl Nov19 1:35 /usr/local/aegis/aegis_update/AliYunDunUpdate
0.3 root 534 0.0 0.3 157388 5984 ? Ss 22:04 0:00 sshd: root@pts/0
0.3 root 821 0.0 0.3 362012 6508 ? Ssl Sep20 3:44 /usr/sbin/rsyslogd -n
0.4 root 1113 0.0 0.4 242200 9324 ? Ssl Sep20 46:15 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-containerd.sock --metrics-interval=0 --start-timeout 2m --state-dir /var/run/docker/libcontainerd/containerd --shim docker-containerd-shim --runtime docker-runc
0.5 65534 18283 0.0 0.5 439532 10604 pts/2 S Nov19 0:00 php-fpm: pool www
0.5 65534 1944 0.0 0.5 439532 10600 pts/2 S Nov19 0:00 php-fpm: pool www
0.5 65534 28829 0.0 0.5 439336 9536 pts/2 S Nov21 0:00 php-fpm: pool www
0.5 65534 30518 0.0 0.5 439532 10612 pts/2 S Nov17 0:00 php-fpm: pool www
0.5 root 351 0.0 0.5 47328 9632 ? Ss Sep20 0:15 /usr/lib/systemd/systemd-journald
0.6 65534 13194 0.0 0.6 439676 12644 pts/2 S Nov18 0:00 php-fpm: pool www
0.6 65534 4633 0.0 0.6 439532 12620 pts/2 S Nov19 0:00 php-fpm: pool www
0.6 65534 8699 0.0 0.6 439704 13088 pts/2 S Nov16 0:00 php-fpm: pool www
0.6 polkitd 521 0.0 0.6 716592 11452 ? Ssl Sep20 0:11 /usr/lib/polkit-1/polkitd --no-debug
0.7 root 815 0.0 0.7 573920 14744 ? Ssl Sep20 9:33 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
0.8 root 12586 1.5 0.8 132912 15116 ? S<sl Nov19 78:13 /usr/local/aegis/aegis_client/aegis_10_75/AliYunDun
0.9 root 14391 0.0 0.9 54812 16956 pts/2 S+ Oct31 6:54 /usr/bin/python /usr/bin/supervisord --nodaemon --configuration /etc/supervisor/supervisord.conf
0.9 root 14396 0.0 0.9 438808 16952 pts/2 S Oct31 1:29 php-fpm: master process (/etc/php/7.2/fpm/php-fpm.conf)
1.2 root 1460 0.0 1.2 613004 24204 ? Ssl Sep20 0:27 PM2 v3.5.1: God Daemon (/root/.pm2)
1.5 root 818 0.0 1.5 737300 29832 ? Ssl Sep20 68:25 /usr/bin/dockerd
1.7 root 12348 0.0 1.7 571116 32760 ? Ssl Nov05 0:06 node /root/download/node/bin/configurable-http-proxy --ip --port 8000 --api-ip 127.0.0.1 --api-port 8001 --error-target http://127.0.0.1:8081/hub/error
1.8 root 23187 0.0 1.8 256672 35464 ? S Oct22 5:39 python app.py runserver -h 0.0.0.0
1.8 root 819 0.3 1.8 993740 34320 ? Ssl Sep20 339:32 /usr/bin/taosd
2.7 root 12342 0.0 2.7 766296 52152 pts/3 Ssl+ Nov05 3:39 /usr/local/bin/python3.6 /usr/local/bin/jupyterhub
3.3 jupyter 12617 0.0 3.3 719872 63920 ? Ssl Nov05 0:14 /usr/local/bin/python3.6 /usr/local/bin/jupyterhub-singleuser --port=53971
6.3 mysql 18832 0.0 6.3 995620 119772 ? Sl Nov20 1:22 /application/mysql-5.6.42/bin/mysqld --basedir=/application/mysql-5.6.42 --datadir=/application/mysql-5.6.42/data --plugin-dir=/application/mysql-5.6.42/lib/plugin --user=mysql --log-error=qiuping.err --pid-file=/application/mysql-5.6.42/data/qiuping.pid --socket=/application/mysql-5.6.42/tmp/mysql.sock --port=3306
9.0 101 14398 0.0 9.0 1153192 170700 pts/2 Sl Oct31 18:43 /usr/sbin/mysqld --user=root
14.7 root 1066 0.1 14.7 2569628 277748 ? Sl Nov02 37:16 /usr/java/latest/bin/java -Djava.util.logging.config.file=/usr/local/tomcat//conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat//endorsed -classpath /usr/local/tomcat//bin/bootstrap.jar:/usr/local/tomcat//bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat/ -Dcatalina.home=/usr/local/tomcat/ -Djava.io.tmpdir=/usr/local/tomcat//temp org.apache.catalina.startup.Bootstrap start
[root@test ~]#
Note: The above method using awk taken out from the fourth row field, then the entire line, and then sort the entries in combination.
2, scripting, and while use for network segment 192.168.0.0/24 are achieved, if the address can ping, ping the output if "success!", If not General ping output "fail!"
1) for loop to achieve
[root@test ~]#cat ping.sh
#!/bin/bash
decare -i ipbegan=1
decare -i ipend=254
network="192.168.0."
for ip in `seq $ipbegan $ipend`;do
{
ping -c 1 -w 1 ${network}$ip &>/dev/null
if [ $? -eq 0 ];then
echo -e "\033[032m${network}$ip is success! \033[0m"
else
echo -e "\033[031m${network}$ip is fail! \033[0m"
fi
}&
done
wait
[root@test ~]#
2) c language style for loop to achieve
[root@test ~]#cat ping.sh
#!/bin/bash
declare -i ipbegan=1
declare -i ipend=254
network="192.168.0."
for((i=$ipbegan;i<=$ipend;i++));do
{
ping -c 1 -w 1 ${network}$i &>/dev/null
if [ $? -eq 0 ];then
echo -e "\033[032m${network}$i is success! \033[0m"
else
echo -e "\033[031m${network}$i is fail! \033[0m"
fi
}&
done
wait
3) while loop to achieve
[root@test ~]#cat ping.sh
#!/bin/bash
declare -i ipbegan=1
declare -i ipend=254
network="192.168.0."
while [ $ipbegan -le $ipend ];do
{
ping -c 1 -w 1 ${network}${ipbegan} &>/dev/null
if [ $? -eq 0 ];then
echo -e "\033[032m${network}${ipbegan} is success! \033[0m"
else
echo -e "\033[031m${network}${ipbegan} is fail! \033[0m"
fi
}&
let ipbegan+=1
done
wait
Description: while recycling multithreaded manner, the need to let ipbegan + = 1 on the "&}" after, not even let ipbegan + = 1 is also enclosed inside.
3, weekly working days 1:30, the / etc to backup / backup directory to save the file name format is "etcbak-yyyy-mm-dd-HH.tar.xz", which is the day before the date of time
1) write backup script
[root@test ~]#cat backup.sh
#!/bin/bash
backup_file="/etc"
backup_dest="/backup"
[ ! -e $backup_dest ] && mkdir $backup_dest|| ture
[ $? -eq 0 ] && tar zcf ${backup_dest}/etcbak-`date -d 'yesterday' '+%F-%H-%M-%S'`.tar.xz $backup_file &>/dev/null
[root@test ~]#
2) planning task
[root@test ~]#crontab -l 30 01 * * 1-5 root /bin/bash /root/backup.sh &> /dev/null [root@test ~]#
4, working time, every 10 minutes to perform a check disk space, any partition if it is found higher than 80% utilization, sends an alarm message
1) Check disk space to write the script
#!/bin/bash
for i in `df|awk '/^\/dev\//{print $5}'|cut -d '%' -f1`;do
if [ $i -gt 80 ];then
# /bin/wall "disk is full"
echo "disk is full" | mail -s "warning" [email protected] &> /dev/null
fi
done
[root@test ~]#
Note: The above script to send a message you need to configure the mail
2) planning task
[root@test ~]#crontab -l */10 * * * 1-5 root /bin/bash /root/checkdisk.sh &> /dev/null [root@test ~]#