gem EPERM problem
安装 cocoapods:
sudo gem install cocoapods ERROR: While executing gem ... (Errno::EPERM) Operation not permitted - /usr/bin/xcodeproj
解决:手动指定路径:
sudo gem install -n /usr/local/bin cocoapods
安装 cocoapods:
sudo gem install cocoapods ERROR: While executing gem ... (Errno::EPERM) Operation not permitted - /usr/bin/xcodeproj
解决:手动指定路径:
sudo gem install -n /usr/local/bin cocoapods
os:centos6
type:vps
1. 创建用于交换分区的文件
2. 设置交换分区文件
3. 立即启用交换分区文件
4. 设置开机时自启用swap分区,需要修改文件/etc/fstab中的swap行,添加记录。
dd if=/dev/zero of=/data/swap bs=1M count=4096 mkswap /data/swap swapon /data/swap /data/swap swap swap defaults 0 0
update user set Host='%' where Host ='127.0.0.1';
flush privileges;
原文:https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Security_Guide/sec-Using_Firewalls.html#sec-Introduction_to_firewalld1
参考译文:http://blog.csdn.net/steveguoshao/article/details/45999645
firewall-cmd --state
firewall-cmd --get-zones
firewall-cmd --zone=public --list-all
firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload
如何实现自动备份数据路里面所有业务表的功能:
#!/bin/bash echo "Dump mysql databases..." DB_USER=xxx DB_PASSWORD=xxx DB_LIST=$(echo "show databases;" | mysql -u${DB_USER} -p${DB_PASSWORD}) for db in ${DB_LIST} do if [ $db != "Database" ] && [ $db != "mysql" ] && [ $db != "phpmyadmin" ] && [ $db != "information_schema" ] && [ $db != "performance_schema" ]; then echo " backup "$db mysqldump -u${DB_USER} -p${DB_PASSWORD} $db > ./$db.sql fi done