grep显示ps输出标题 |
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背景
查找服务器上某个进程详细信息[ps:pid,ppid,内存使用，cpu使用等]，常常会使用ps筛选对应的进程，正常情况过滤后信息不会显示ps输出的title。
实操：
1.未显示ps 标题
常规操作：ps aux｜grep xx [rootbird ~]# ps aux | grep libvirt dnsmasq 2169025 0.0 0.0 71964 2120 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 2169026 0.0 0.0 71860 428 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 3040675 0.0 0.0 12108 1068 pts/1 S+ 23:09 0:00 grep --color=auto libvirt 2.显示ps 标题「通用法：使用ps的所有参数，例如：ps aux 、ps -ef」 ps aux| head -1;ps aux|grep xx [rootbird ~]# ps aux |head -1; ps aux| grep libvirt USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND dnsmasq 2169025 0.0 0.0 71964 2120 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 2169026 0.0 0.0 71860 428 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 3041792 0.0 0.0 12108 1060 pts/1 S+ 23:12 0:00 grep --color=auto libvirt「动态调整，需要根据ps不同参数调整，例如：ps aux 、ps -ef」 ps aux|grep -E 'USER|xx' [rootbird ~]# ps auxw | grep -E "USER|libvirt" USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND dnsmasq 2169025 0.0 0.0 71964 2120 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 2169026 0.0 0.0 71860 428 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 3043012 0.0 0.0 12108 2484 pts/1 S+ 23:18 0:00 grep --color=auto -E USER|libvirt ps -ef|grep -E 'UID|xx' [rootbird ~]# ps -ef | grep -E "UID|libvirt" UID PID PPID C STIME TTY TIME CMD dnsmasq 2169025 1 0 2021 ? 00:00:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 2169026 2169025 0 2021 ? 00:00:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 3044818 3033179 0 23:26 pts/1 00:00:00 grep --color=auto -E UID|libvirt 实战查找服务器上进程状况的时候[ps:D，Zone进程]，ps aux 与ps -ef配合使用，分别显示各自title显的格外重要。 [rootbird ~]# ps -ef | grep -E "UID|libvirt" UID PID PPID C STIME TTY TIME CMD dnsmasq 2169025 1 0 2021 ? 00:00:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 2169026 2169025 0 2021 ? 00:00:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 3044818 3033179 0 23:26 pts/1 00:00:00 grep --color=auto -E UID|libvirt [rootbird ~]# ps aux | grep -E "USER|libvirt" USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND dnsmasq 2169025 0.0 0.0 71964 2120 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 2169026 0.0 0.0 71860 428 ? S 2021 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper root 3045966 0.0 0.0 12108 2488 pts/1 S+ 23:32 0:00 grep --color=auto -E USER|libvirt-------------------------------------------------工欲善其事，必先利其器-------------------------------------- |
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