做运维的朋友都知道，大家经常要对一些系统做月度维护或者自查，在这个过程中，如果只是小工作量的查询，进入系统直接输入命令即可。但是如果说要查询的系统很多，每个系统中要查询的项目也很多，那么每次都要一次一次地输入命令就很麻烦。所以建议大家在获得管理员的许可的前提下，可以使用脚本。
下面是我写的linux中常见的检查项的脚本，大家可以测试使用，如果有其他的检查项，按照上面的格式添加进去就好。
#!/bin/bash
echo "" > /tmp/shell/xunjian.txt
echo "1 cpu mem " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
top -bn 1 | head -n 15 >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
echo "2 df -h " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
df -h >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
echo "3 hostname " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
hostname >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
echo "4 ps aux|more " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
ps aux| more |head -n 10 >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
echo "5 ifconfig " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
ifconfig >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
echo "6 vmstat 1 1 " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
vmstat 1 1 >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
echo "7 date " >> /tmp/shell/xunjian.txt
echo "" >> /tmp/shell/xunjian.txt
date >> /tmp/shell/xunjian.txt
查询结果如下所示：
1 cpu mem
top - 17:58:35 up 10 min, 2 users, load average: 0.03, 0.14, 0.13
Tasks: 274 total, 1 running, 273 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 7.1 sy, 0.0 ni, 92.9 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 1863076 total, 73052 free, 1156900 used, 633124 buff/cache
KiB Swap: 2097148 total, 2094836 free, 2312 used. 538472 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6 root 20 0 0 0 0 S 5.3 0.0 0:03.57 ksoftirqd/0
3217 root 30 10 320188 12700 4860 S 5.3 0.7 0:17.20 urlgrabber+
3316 root 20 0 162020 2180 1516 R 5.3 0.1 0:00.03 top
1 root 20 0 193804 4940 2184 S 0.0 0.3 0:01.60 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:+
7 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
2 df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 895M 0 895M 0% /dev
tmpfs 910M 0 910M 0% /dev/shm
tmpfs 910M 11M 900M 2% /run
tmpfs 910M 0 910M 0% /sys/fs/cgroup
/dev/sda3 18G 7.1G 11G 41% /
/dev/sda1 297M 161M 137M 54% /boot
tmpfs 182M 4.0K 182M 1% /run/user/42
tmpfs 182M 28K 182M 1% /run/user/1000
/dev/sr0 4.2G 4.2G 0 100% /run/media/red/RHEL-7.7 Server.x86_64
3 hostname
localhost.localdomain
4 ps aux|more
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.2 0.2 193804 4940 ? Ss 17:47 0:01 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
root 2 0.0 0.0 0 0 ? S 17:47 0:00 [kthreadd]
root 4 0.0 0.0 0 0 ? S< 17:47 0:00 [kworker/0:0H]
root 6 0.5 0.0 0 0 ? S 17:47 0:03 [ksoftirqd/0]
root 7 0.0 0.0 0 0 ? S 17:47 0:00 [migration/0]
root 8 0.0 0.0 0 0 ? S 17:47 0:00 [rcu_bh]
root 9 0.0 0.0 0 0 ? R 17:47 0:00 [rcu_sched]
root 10 0.0 0.0 0 0 ? S< 17:47 0:00 [lru-add-drain]
root 11 0.0 0.0 0 0 ? S 17:47 0:00 [watchdog/0]
5 ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.188.128 netmask 255.255.255.0 broadcast 192.168.188.255
inet6 fe80::e5ca:68c8:e7fa:5617 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:f0:d8:bc txqueuelen 1000 (Ethernet)
RX packets 204409 bytes 276329842 (263.5 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 93187 bytes 5603372 (5.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:89:23:f1 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
6 vmstat 1 1
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 2312 73236 40 633468 0 4 2019 1099 770 1423 3 6 91 0 0
7 date
Sun Sep 3 17:58:35 PDT 2023
8 netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.188.2 0.0.0.0 UG 0 0 0 ens33
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
192.168.188.0 0.0.0.0 255.255.255.0 U 0 0 0 ens33
[root@localhost shell]#