以前使用iwconfig来配置和获取wireless的信息，目前openwrt已经废弃这种方式，采用 iwinfo 和 iw 命令来进行替代。
iwinfo的使用方法如下：
# iwinfo -h
Usage: iwinfo <device> info // 查看设备信息 iwinfo <device> scan // 扫描周围ssid iwinfo <device> txpowerlist // 设备发送功率及当前的使用功率 iwinfo <device> freqlist // 设备的信道以及当前使用的信道 iwinfo <device> assoclist // 关联的终端信息 iwinfo <device> countrylist // 国家信息#
例子如下：
# iwinfo wlan0 info
wlan0 ESSID: "mytvws" // ESSID Access Point: 78:C2:C0:E3:00:4D // BSSID Mode: Master Channel: 1 (2.412 GHz) // 模式、信道 Tx-Power: 5 dBm Link Quality: unknown/70 // 发送功率 Signal: unknown Noise: -95 dBm // 信号、噪声 Bit Rate: unknown Encryption: WPA2 PSK (CCMP) // 加密方式 Type: nl80211 HW Mode(s): 802.11bgn // 802.11模式 Hardware: unknown [Generic MAC80211] TX power offset: unknown Frequency offset: unknown Supports VAPs: yes PHY name: phy0# # iwinfo wlan0 scanCell 01 - Address: 00:22:AA:91:C2:48 // BSSID ESSID: "Huwomo" // ESSID Mode: Master Channel: 2 // 模式、信道 Signal: -73 dBm Quality: 37/70 // 信号 Encryption: mixed WPA/WPA2 PSK (TKIP, CCMP) //加密方式Cell 02 - Address: 00:22:AA:01:BD:A8
ESSID: "UTT-HIPER_DEAC84" Mode: Master Channel: 4 Signal: -79 dBm Quality: 31/70 Encryption: none# iwinfo wlan0 txpowerlist
0 dBm ( 1 mW) 1 dBm ( 1 mW) 2 dBm ( 1 mW) 3 dBm ( 1 mW) 4 dBm ( 2 mW)* 5 dBm ( 3 mW) // 当前使用的功率 6 dBm ( 3 mW) 7 dBm ( 5 mW) 8 dBm ( 6 mW) 9 dBm ( 7 mW) 10 dBm ( 10 mW) 11 dBm ( 12 mW) 12 dBm ( 15 mW) 13 dBm ( 19 mW) 14 dBm ( 25 mW) 15 dBm ( 31 mW) 16 dBm ( 39 mW) 17 dBm ( 50 mW) 18 dBm ( 63 mW) 19 dBm ( 79 mW) 20 dBm ( 100 mW) 21 dBm ( 125 mW) 22 dBm ( 158 mW) 23 dBm ( 199 mW) 24 dBm ( 251 mW) 25 dBm ( 316 mW) 26 dBm ( 398 mW) 27 dBm ( 501 mW) 28 dBm ( 630 mW) 29 dBm ( 794 mW) 30 dBm (1000 mW)# # iwinfo wlan0 freqlist* 2.412 GHz (Channel 1) // 当前使用的信道 2.417 GHz (Channel 2) 2.422 GHz (Channel 3) 2.427 GHz (Channel 4) 2.432 GHz (Channel 5) 2.437 GHz (Channel 6) 2.442 GHz (Channel 7) 2.447 GHz (Channel 8) 2.452 GHz (Channel 9) 2.457 GHz (Channel 10) 2.462 GHz (Channel 11)# # iwinfo wlan0 assolistNo station connected // 没有关联的终端# # iwinfo wlan0 countrylist 00 00 AD AD AE AE AF AF AG AG AI AI AL AL AM AM AN AN AO AO AQ AQ AR AR AS AS AT AT AU AU AW AW AX AX AZ AZ BA BA BB BB BD BD BE BE BF BF BG BG BH BH BI BI BJ BJ BL BL BM BM BN BN BO BO BR BR BS BS BT BT BV BV BW BW BY BY BZ BZ CA CA CC CC CD CD CF CF CG CG CH CH CI CI CK CK CL CL CM CM CN CN CO CO CR CR CU CU CV CV CX CX CY CY CZ CZ DE DE DJ DJ DK DK DM DM DO DO DZ DZ EC EC EE EE EG EG EH EH ER ER ES ES ET ET FI FI FJ FJ FK FK FM FM FO FO FR FR GA GA GB GB GD GD GE GE GF GF GG GG GH GH GI GI GL GL GM GM GN GN GP GP GQ GQ GR GR GS GS GT GT GU GU GW GW GY GY HK HK HM HM HN HN HR HR HT HT HU HU ID ID IE IE IL IL IM IM IN IN IO IO IQ IQ IR IR IS IS IT IT JE JE JM JM JO JO JP JP KE KE KG KG KH KH KI KI KM KM KN KN KP KP KR KR KW KW KY KY KZ KZ LA LA LB LB LC LC LI LI LK LK LR LR LS LS LT LT LU LU LV LV LY LY MA MA MC MC MD MD ME ME MF MF MG MG MH MH MK MK ML ML MM MM MN MN MO MO MP MP MQ MQ MR MR MS MS MT MT MU MU MV MV MW MW MX MX MY MY MZ MZ NA NA NC NC NE NE NF NF NG NG NI NI NL NL NO NO NP NP NR NR NU NU NZ NZ OM OM PA PA PE PE PF PF PG PG PH PH PK PK PL PL PM PM PN PN PR PR PS PS PT PT PW PW PY PY QA QA RE RE RO RO RS RS RU RU RW RW SA SA SB SB SC SC SD SD SE SE SG SG SH SH SI SI SJ SJ SK SK SL SL SM SM SN SN SO SO SR SR ST ST SV SV SY SY SZ SZ TC TC TD TD TF TF TG TG TH TH TJ TJ TK TK TL TL TM TM TN TN TO TO TR TR TT TT TV TV TW TW TZ TZ UA UA UG UG UM UM* US US // 国家代码 UY UY UZ UZ VA VA VC VC VE VE VG VG VI VI VN VN VU VU WF WF WS WS YE YE YT YT ZA ZA ZM ZM ZW ZW#