课程第24次

admin

2019-06-04
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%post
KS_IPADDR=$(ifconfig | head -n 2 | tail -n 1 | cut -c 14- | cut -d ' ' -f 1)
KS_IPADDR_SHORT=$(ifconfig | head -n 2 | tail -n 1 | cut -c 14- | cut -d ' ' -f 1 | cut -d '.' -f 4)
KS_DEVICE=$( ls /etc/sysconfig/network-scripts/ifcf* | grep -v ifcfg-lo | cut -d '/' -f 5)
KS_DEVICE_SHORT=$( ls /etc/sysconfig/network-scripts/ifcf* | grep -v ifcfg-lo | cut -d '/' -f 5 | cut -d '-' -f 2)
cat > /etc/sysconfig/network-scripts/$KS_DEVICE <<EOF
DEVICE=$KS_DEVICE_SHORT
IPADDR=$KS_IPADDR
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
EOF
echo "station$KS_IPADDR_SHORT.example.com" >/etc/hostname
echo "$KS_IPADDR  station$KS_IPADDR_SHORT.example.com  station$KS_IPADDR_SHORT" >> /etc/hosts
%end
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[root@instructor labs]# grep cat 1.txt
cat
concatenate
category
educated
vindication
[root@instructor labs]# grep '^cat' 1.txt
cat
category
[root@instructor labs]# grep dog  1.txt
dog
dogma
boondoggle
chilidog
[root@instructor labs]# grep 'dog$'  1.txt
dog
chilidog
[root@instructor labs]# vim 1.txt
[root@instructor labs]# grep '^#'  1.txt
#dog
#cat
[root@instructor labs]# grep -v  '^#'  1.txt
cat
dog
concatenate
dogma
category
educated
boondoggle
vindication
chilidog
[root@instructor labs]# grep '^#'  1.txt
#dog
#cat
[root@instructor labs]# grep '^$'  1.txt
[root@instructor labs]# grep  -v '^$'  1.txt
cat
dog
concatenate
dogma
category
educated
boondoggle
vindication
chilidog
#dog
#cat
[root@instructor labs]# grep  -v '^$'  1.txt |  grep -v '^#'
cat
dog
concatenate
dogma
category
educated
boondoggle
vindication
chilidog
[root@instructor labs]#
--------------------------
[root@instructor labs]# grep -A 1 -B 1  -n  --color  -r '\<cat\>'  ./
./2.txt:1:cat
./2.txt-2-cbt
--
./1.txt:1:cat
./1.txt-2-dog
--
./1.txt-11-
./1.txt:12:#cat
./1.txt-13-This is cat1