yum源优化

  cd /
 1021  ls
 1022  mv data /root
 1023  ls /root
 1024  cd data
 1025  cd /root/data
 1026  ls
 1027  cat 6379
 1028  cd 6379
 1029  ls
 1030  cd -
 1031  touch oldboy.txt
 1032  ls
 1033  rm oldboy.txt 
 1034  ls
 1035  mkdir boy
 1036  ls
 1037  rm -f boy
 1038  rm -rf boy
 1039  cls
 1040  clear
 1041  date
 1042  cd ..
 1043  touch test.txt
 1044  vi text.txt
 1045  vim text.txt 
 1046  grep 'oldboy' text.txt 
 1047  grep -v 'oldboy' text.txt 
 1048  sed '/oldboy/d' text.txt 
 1049  awk 'NR<3' text.txt
 1050  awk 'NR<5' text.txt
 1051  awk 'NR<2' text.txt
 1052  awk 'NR<=2' text.txt
 1053  vi text.txt 
 1054  awk '{print $3}' text.txt 
 1055  awk '{print $2}' text.txt 
 1056  awk '{print $1}' text.txt 
 1057  awk '{print $0}' text.txt 
 1058  mkdir /oldboy/demo/data
 1059  mkdir -v /odl/dle/dll
 1060  mkdir -v -p /oldboy/demo/data
 1061  touch manage.py rule.py
 1062  ls
 1063  mv manage.py /oldboy/demo/data
 1064  mv rule.py /oldboy/demo/data
 1065  ls
 1066  cd /oldboy/demo/data
 1067  ls
 1068  touch -v test{1..100}
 1069  touch  test{1..100}
 1070  ls
 1071  ls -1
 1072  touch oldboy{11,100}
 1073  ls oldboy1*
 1074  cp /etc/service .
 1075  cp /etc/services .
 1076  ls
 1077  rm -f test*
 1078  ls
 1079  cd /
 1080  mv /oldboy /tmp/
 1081  ls /tmp
 1082  ls /tmp/oldboy/demo/data/
 1083  cls
 1084  cd /opt
 1085  mv /tmp/oldboy/ /
 1086  ls /
 1087  ls /oldboy/demo/data/
 1088  ls /tmp
 1089  mv /oldboy/ /tmp
 1090  ls /tmp/
 1091  cd /tmp/oldboy/demo/data/
 1092  ls
 1093  rm -f manage.py oldboy* services 
 1094  ls
 1095  touch oldboy{1..3}
 1096  ls
 1097  cp oldboy1 oldboy2 oldboy3 /tmp
 1098  ls /tmp
 1099  cd /tmp
 1100  ls
 1101  rm -r oldboy
 1102  ls
 1103  rm -rf oldboy
 1104  ls
 1105  cd /
 1106  ls
 1107  head -n 2 test.txt 
 1108  cat test.txt 
 1109  vim test.txt
 1110  head -n 2 test.txt 
 1111  tail -n 1 text.txt
 1112  tail -n 1 test.txt 
 1113  tail -n 2 test.txt 
 1114  seq 10
 1115  seq 5 15
 1116  seq 5 2 15
 1117  clear
 1118  seq 5 15 > 123.txt
 1119  cat 123.txt 
 1120  head -n 9 123.txt | tail -n 7
 1121  ip addr
 1122  ip addr|tail -n 4|head -n 1
 1123  clear
 1124  ls
 1125  cd /tmp
 1126  ls
 1127  mv /test.txt /tmp
 1128  ls
 1129  cp test.txt /mnt
 1130  ls /mnt/
 1131  cp /mnt/test.txt .
 1132  which cp
 1133  ls /usr/bin/cp
 1134  /usr/bin/cp /mnt/test.txt .
 1135  ls
 1136  /usr/bin/cp -i /mnt/test.txt .
 1137  cp -h
 1138  cp --h
 1139  clear
 1140  \cp /mnt/test.txt .
 1141  alias
 1142  unalias cp
 1143  cp /mnt/test.txt .
 1144  alias
 1145  alias cp='cp -i'
 1146  alias
 1147  alias ipr='ip addr'
 1148  ipr
 1149  alias
 1150  unalias ipr
 1151  ipr
 1152  unalias
 1153  alias
 1154  cat /etc/sysconfig/network-scripts/ifcfg-eth0
 1155  cat /etc/sysconfig/network-scripts/ifcfg-ens33
 1156  alias cat_ens33='cat /etc/sysconfig/network-scripts/ifcfg-ens33'
 1157  cat_ens33
 1158  cd ~
 1159  seq 100 > ett.txt
 1160  cat ett.txt
 1161  head -n 30 ett.txt|tail -n 11
 1162  awk 'NR>19 && NR<31' ett.txt
 1163  sed '/20/,/30/p' ett.txt 
 1164  sed -n '/20/,/30/p' ett.txt 
 1165  grep '20' -A 10 ett.txt
 1166  grep '30' -B 10 ett.txt
 1167  grep '25' -C 5 ett.txt
 1168  clear
 1169  yum install bc -y
 1170  touch abc.txt
 1171  vim abc.txt 
 1172  cat abc.txt |bc
 1173  ls
 1174  rm -f abc.txt 
 1175  ls
 1176  mkdir -p /oldboy/test{1..3}
 1177  echo '11111111111./hostlists.txt'
 1178  echo '11111111111./hostlists.txt' > /oldboy/
 1179  echo '11111111111./hostlists.txt' > /oldboy/111.sh
 1180  echo '11111111111./hostlists.txt' > /oldboy/test1/222.sh
 1181  echo '11111111111./hostlists.txt' > /oldboy/test2/333.sh
 1182  echo '11111111111./hostlists.txt' > /oldboy/test3/666.sh
 1183  find /oldboy -type f -name "*.sh"
 1184  find /oldboy -type f -name "*.sh" |xargs cat
 1185  find /oldboy -type f -name "*.sh" |xargs sed 's#./hostlists.txt#../idctest_iplist#g'
 1186  find /oldboy -type f -name "*.sh" | xargs sed -i "s#./hostlists.txt#../idctest_iplist#g"
 1187  find /oldboy -type f -name "*.sh" |xargs cat
 1188  netstat -tunlp
 1189  ss -tunlp
 1190  ls /mnt
 1191  cd /
 1192  ls
 1193  cd mnt
 1194  rm -f test.txt 
 1195  cd ~
 1196  ls /mnt
 1197  ls -l /dev/sr0
 1198  ls -l /dev/cdrom
 1199  mount /dev/cdrom /mnt
 1200  cd /mnt
 1201  ls
 1202  cd Packages/
 1203  ls
 1204  ls -l |wc -l
 1205  rpm -ivh vsftpd-3.0.2-25.el7.x86_64.rpm 
 1206  rpm -e vsftpd-3.0.2-25.el7.x86_64
 1207  rpm -Uvh vsftpd-3.0.2-25.el7.x86_64.rpm 
 1208  rpm -q vsftpd
 1209  rpm -qa
 1210  rpm -qa |grep vsf
 1211  rpm -q vsftp
 1212  cd
 1213  which vim
 1214  rpm -qf /usr/bin/vim
 1215  rpm -ql vsftpd
 1216  cd /etc/yum.repos.d/
 1217  ls
 1218  cat CentOS-Base.repo 
 1219  ls
 1220  ls allrepo
 1221  cat epel.repo
 1222  cd
 1223  yum install openssl
 1224  yum install openssl-devel
 1225  yum install openssl*
 1226  yum install lib*
 1227  yum list
 1228  yum list |grep python
 1229  yum list |grep vsftpd
 1230  yum grouplist
 1231  yum groupinstall "Development Tools"
 1232  yum remove glibc
 1233  yum remove vsftpd
 1234  yum install -y vsftpd
 1235  cd _
 1236  cd -
 1237  pwd
 1238  ls
 1239  mkdir ali
 1240  mv *.repo ali
 1241  ls
 1242  vim local.repo
 1243  mount
 1244  yum clean all
 1245  yum remove vsftpd
 1246  yum install -y vsftpd
 1247  systemctl start vsftpd
 1248  systemctl enable vsftpd
 1249  cd 
 1250  mkdir /var/ftp/pub/centos7
 1251  cp -a /mnt/* /var/ftp/pub/centos7
 1252  ifconfig
 1253  iptables -F
 1254  cd -
 1255  vim ftp.repo