Firefox更改UA,开发者工具——响应式视图,选择相应分辨率,点击手指图标开始触摸事件。
Chrome开发者工具,左上角手机图标,然后选择相应的移动设备。
Firefox/Chrome模拟触屏手机
发布时间:March 12, 2015 // 分类: // No Comments
Linux Performance Analysis and Tools
发布时间:March 5, 2015 // 分类: // No Comments
Openwrt下转守护进程runit使用
发布时间:February 11, 2015 // 分类:OpenWrt // No Comments
类似于s6,不过runit在openwrt busybox中自带,需编译openwrt固件时选择。
runsvdir用以扫描指定目录子目录下run脚本并使用runsv启动为守护进程:
runsvdir -P /etc/config/service/
一个openconnect启动脚本示例,注意启动的程序一定要以非守护进程启动且以exec命令执行:
cat /etc/config/service/openconnect/run
exec 2>&1
exec openconnect -c user-cert.pem -k user-key.pem -s /etc/config/vpnc --no-cert-check www.haiyun.me
如果run目录存在finish脚本,run执行的程序退出后runsv会执行finish并传递程序退出code给finish参数1,然后再重新执行run启动程序,我们可以使用finish判断当网络不通时程序退出状态,避免程序持续启动退出导致死循环:
#!/bin/sh
if [ $1 -eq 255 ]
then
sleep 5
else
exit
fi
控制启动的程序,更多见http://smarden.org/runit/sv.8.html:
sv status /etc/config/service/openconnect/
sv stop /etc/config/service/openconnect/
sv start /etc/config/service/openconnect/
sv restart /etc/config/service/openconnect/
也可以用runit管理ssh动态隧道转发实现类似于autossh的功能,ssh连接时使用超时控制,超时后ssh关闭runsv会自动重启ssh。
更多示例:
http://smarden.org/runit/runscripts.html
Openwrt无线管理工具/命令
发布时间:February 9, 2015 // 分类:OpenWrt // No Comments
查看连接Openwrt路由的无线客户端:
iwinfo wlan0 assoclist
iw dev wlan0 station dump
查看分配的DHCP客户端IP:
cat /tmp/dhcp.leases
扫描无线路由器/AP:
iwinfo wlan0 scan
查看Openwrt路由无线信息:
iwinfo wlan0 info
wlan0 ESSID: "OpenWrt"
Access Point: 00:1F:A3:65:55:8E
Mode: Master Channel: 5 (2.432 GHz)
Tx-Power: 20 dBm Link Quality: 30/70
Signal: -80 dBm Noise: unknown
Bit Rate: 32.5 MBit/s
Encryption: WPA2 PSK (CCMP)
Type: nl80211 HW Mode(s): 802.11bg
Hardware: unknown [Generic MAC80211]
TX power offset: unknown
Frequency offset: unknown
Supports VAPs: no PHY name: phy0
重启无线:
wifi down && sleep 5 && wifi
一个bash脚本,输出当前无线客户端IP/MAC/名称/速率:
#!/bin/bash
echo -e "# IP address\tname\tMAC address\ttx bit\trx bit"
for interface in `iw dev | grep Interface | cut -f 2 -s -d" "`
do
maclist=(`iw dev $interface station dump | grep Station | cut -f 2 -s -d" "`)
txlist=(`iw dev wlan0 station dump|grep 'tx bitrate'|awk '{print $3$4}'`)
rxlist=(`iw dev wlan0 station dump|grep 'rx bitrate'|awk '{print $3$4}'`)
len=${#maclist[@]}
for ((i=0;i<$len;i++))
do
mac=${maclist[$i]}
tx=${txlist[$i]}
rx=${rxlist[$i]}
ip="UNKN"
host=""
ip=`cat /tmp/dhcp.leases | cut -f 2,3,4 -s -d" " | grep $mac | cut -f 2 -s -d" "`
host=`cat /tmp/dhcp.leases | cut -f 2,3,4 -s -d" " | grep $mac | cut -f 3 -s -d" "`
echo -e "$ip\t$host\t$mac\t$tx\t$rx"|awk '{printf "%-15s %-25s %-15s %-10s %-10s\n",$1,$2,$3,$4,$5}'
done
done
http://wiki.openwrt.org/doc/faq/faq.wireless
http://wiki.openwrt.org/doc/howto/wireless.utilities
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