Thread: How to test if a host "exists" (host anmed resolvable) from a script?

i check if network host "exists" (i happy if address can resolved)from script dont know how

use in order check if proxy server exists , in case set "system wide" proxy (perhaps need update or perhaps switch between 2 different apt config files or apt , package manager obey proxy environment variables?)

/javafanboy

you can check if network host resolvable, , set environment variable accordingly using following script:

code:

proxy=`ping -w 1 -c 1 192.168.1.1 | grep '1 received'`  if [ -n "$proxy" ];    export http_proxy=http://192.168.1.1:8080    export ftp_proxy=http://192.168.1.1:8080 fi

apt obey proxy environment variables, above code should work. change ip address , port proxy settings.

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