25期第三节课（第二章）
第三天
2.4
1.ifconfig 2.uname 3.uptime 4.free 5.who 6.last 7.history
8.sosreport
2.5
1pwd 2cd 3ls
2.6
1cat 2more 3head 4 tail 5tr 6wc 7stat 8 cut 9diff
2.7
1touch 2mkdir 3cp 4mv 5rm 6dd 7 file
2.8
1.tar 2grep 3 find
第三天
2.4
1.ifconfig 2.uname 3.uptime 4.free 5.who 6.last 7.history
8.sosreport
2.5
1pwd 2cd 3ls
2.6
1cat 2more 3head 4 tail 5tr 6wc 7stat 8 cut 9diff
2.7
1touch 2mkdir 3cp 4mv 5rm 6dd 7 file
2.8
1.tar 2grep 3 find