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I want to get the wireless signal on a terminal, but only the signal. So no extra info, just the connection speed.

It would help a lot!

Edit:

iwconfig Returns this:

lo        no wireless extensions.

eth0      no wireless extensions.

eth1      IEEE 802.11abg  ESSID:"Goeggies"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: B4:82:FE:93:DA:BC   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
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marked as duplicate by Alvar, Lucio, Braiam, Eric Carvalho, karel Jan 10 at 0:53

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1 Answer 1

Watch out, signal level and connection speed aren't necessarily correlated.

Use the iwconfig command:

wlan2     IEEE 802.11abgn  ESSID:"something"  
          Mode:Managed  Frequency:5.745 GHz  Access Point: 60:AA:4C:D4:53:FC   
          Bit Rate=144.4 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=64/70  Signal level=-46 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:381146  Invalid misc:1531   Missed beacon:0

"Bit rate" indicates the actual transfer speed, while "Link Quality" and "Signal Level" tell you how strong the signal is.

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They why not iwconfig | grep level, or iwconfig | grep Signal? ;-) –  Wilf Jan 9 at 17:04
    
iwconfig doesn't return anything with wlan2, see edit –  user2514005 Jan 9 at 17:14
    
Your wireless interface is eth1, wlan2 was just an example :) If some specific item of information is not available, maybe your driver doesn't report it :( –  roadmr Jan 9 at 17:20

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