显示经常用的前10的shell命令
1 #!/bin/bash
2 cat ~/.bash_history |awk '{list[$1]++;}\
3 END{
4 for(i in list)
5 {
6 printf("%s\t%d\n",i,list[i]);}
7 }' | sort -nrk 2 | head
root@test:/home/test/shell# ./topten.sh
ls 338
echo 312
cat 207
cd 131
vim 128
pwd 57
ssh 52
ping 43
ifconfig 40
while 37
显示远程主机的运行时间
1 #!/bin/bash
2 ip_list="192.168.99.232 192.168.100.125"
3 user="root"
4 for ip in $ip_list
5 do
6 if [ $ip == "192.168.99.232" ]
7 then
8 uptime=$(ssh $user@$ip -p2013 uptime|awk '{print $3}')
9 else
10 uptime=$(ssh $user@$ip uptime|awk '{print $3}')
11 fi
12 echo $ip uptime: $uptime
13 done
root@test:/home/test/shell# ./uptime.sh
root@192.168.99.232's password:
192.168.99.232 uptime: 1:46,
root@192.168.100.125's password:
192.168.100.125 uptime: 69
显示远程主机磁盘使用情况
1 logfile="diskusage.log"
2 if [[ -n $1 ]]
3 then
4 logfile=$1
5 fi
6
7 if [ ! -e $logfile ]
8 then
9 printf "%-8s %-14s %-9s %-8s %-6s %-6s %-6s %s\n" "DATE" "IP address" "Device" "Capacity" "Used" "Free" "Percent" "Status" > $logfile
10 fi
11
12 ip_list="192.168.99.232 192.168.100.125"
13 (
14 for ip in $ip_list
15 do
16 if [ $ip == "192.168.99.232" ]
17 then
18 ssh test@$ip -p2013 'df -H' | grep ^/dev/ > /tmp/$$.df
19 else
20 ssh root@$ip -p22 'df -H' | grep ^/dev/ > /tmp/$$.df
21 fi
22 while read line
23 do
24 cur_date=$(date +%D)
25 printf "%-8s %-14s " $cur_date $ip
26 echo $line |awk '{ printf("%-9s %-8s %-6s %-6s %-8s",$1,$2,$3,$4,$5);}'
27 pusg=$(echo $line|egrep -o "[0-9]+%")
28 pusg=${pusg/\%/};
29 if [ $pusg -lt 80 ];
30 then
31 echo SAFE
32 else
33 echo ALERT
34 fi
35 done</tmp/$$.df
36 done
37
38 ) >>$logfile
root@test:/home/test/shell# cat diskusage.log
DATE IP address Device Capacity Used Free Percent Status
11/06/13 192.168.99.232 /dev/sda11 97G 41G 51G 45% SAFE
11/06/13 192.168.99.232 /dev/sda5 53G 48G 5.4G 90% ALERT
11/06/13 192.168.100.125 /dev/sda2 21G 19G 1.1G 95% ALERT
11/06/13 192.168.100.125 /dev/sda5 55G 41G 12G 78% SAFE
11/06/13 192.168.100.125 /dev/sda1 104M 12M 87M 12% SAFE
