internet connection tester script
Why doesn't my "internet-connection" script work?
When I plug the ethcable out, it just waits...and waits...and waits... The script: http://pastebin.com/AE9U1qdL Modified script, tested.. http://pastebin.com/HwCujzWj --rameez -- ubuntu-users mailing list ubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
internet connection tester script
wow...thanks:D
2010. 03. 27, szombat keltezéssel 21.09-kor Rameez Thonnakkal ezt írta: > > > > Why doesn't my "internet-connection" script work? > > When I plug the ethcable out, it just waits...and waits...and > waits... > > The script: http://pastebin.com/AE9U1qdL > > > Modified script, tested.. > > http://pastebin.com/HwCujzWj > > --rameez -- ubuntu-users mailing list ubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
internet connection tester script
http://pastebin.com/raw.php?i=rykHdvBh
bix.hu and www.yahoo.com are "pingable" test sites. 127.0.0.1 could not be pinged [firewall drops all icmp] i have a "oneliner" that echoes if theres "internet connection or no". $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ Ok! But: if i want the "oneliner" to only go along when theres internet connection: $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ It just doesn't work. Goal: if theres no internet connection, then the oneliner must loop until there is internet connection. if theres internet connection the oneliner ends. what am i missing? -- ubuntu-users mailing list ubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
internet connection tester script
http://pastebin.com/raw.php?i=rykHdvBh
bix.hu and www.yahoo.com are "pingable" test sites. 127.0.0.1 could not be pinged [firewall drops all icmp] i have a "oneliner" that echoes if theres "internet connection or no". $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ Ok! But: if i want the "oneliner" to only go along when theres internet connection: $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ It just doesn't work. Goal: if theres no internet connection, then the oneliner must loop until there is internet connection. if theres internet connection the oneliner ends. what am i missing?__________________________________________ _____ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos |
internet connection tester script
http://pastebin.com/raw.php?i=rykHdvBh
bix.hu and www.yahoo.com are "pingable" test sites. 127.0.0.1 could not be pinged [firewall drops all icmp] i have a "oneliner" that echoes if theres "internet connection or no". $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ Ok! But: if i want the "oneliner" to only go along when theres internet connection: $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ It just doesn't work. Goal: if theres no internet connection, then the oneliner must loop until there is internet connection. if theres internet connection the oneliner ends. what am i missing? -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines |
internet connection tester script
http://pastebin.com/raw.php?i=rykHdvBh
bix.hu and www.yahoo.com are "pingable" test sites. 127.0.0.1 could not be pinged [firewall drops all icmp] i have a "oneliner" that echoes if theres "internet connection or no". $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && echo "internet connection ok" || echo "no internet connection" no internet connection $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& /dev/null && echo "internet connection ok" || echo "no internet connection" internet connection ok $ Ok! But: if i want the "oneliner" to only go along when theres internet connection: $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done $ It just doesn't work. Goal: if theres no internet connection, then the oneliner must loop until there is internet connection. if theres internet connection the oneliner ends. what am i missing? |
internet connection tester script
On 01/28/2011 11:28 AM, kellyremo wrote:
> > http://pastebin.com/raw.php?i=rykHdvBh > > bix.hu and www.yahoo.com are "pingable" test sites. > 127.0.0.1 could not be pinged [firewall drops all icmp] > > i have a "oneliner" that echoes if theres "internet connection or no". > $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& > /dev/null && echo "internet connection ok" || echo "no internet connection" > internet connection ok > $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& > /dev/null && echo "internet connection ok" || echo "no internet connection" > no internet connection > $ ping -W 1 -c 2 127.0.0.1 >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null > && echo "internet connection ok" || echo "no internet connection" > no internet connection > $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 127.0.0.1 >& /dev/null && > echo "internet connection ok" || echo "no internet connection" > no internet connection > $ ping -W 1 -c 2 bix.hu >& /dev/null && ping -W 1 -c 2 www.yahoo.com >& > /dev/null && echo "internet connection ok" || echo "no internet connection" > internet connection ok > $ > > Ok! > > But: if i want the "oneliner" to only go along when theres internet connection: > $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 > www.yahoo.com >& /dev/null && TORF=false || TORF=true; done > $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 > www.yahoo.com >& /dev/null && TORF=false || TORF=true; done > $ while $TORF; do ping -W 1 -c 1 127.0.0.1 >& /dev/null && ping -W 1 -c 1 > 127.0.0.1 >& /dev/null && TORF=false || TORF=true; done > $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 127.0.0.1 > >& /dev/null && TORF=false || TORF=true; done > $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 > www.yahoo.com >& /dev/null && TORF=false || TORF=true; done > $ > > It just doesn't work. > > Goal: if theres no internet connection, then the oneliner must loop until there > is internet connection. if theres internet connection the oneliner ends. > > what am i missing? > Instead of using a variable (that has funky scoping in shell) just make the && compound command the loop condition and place it in a subshell: while (! ping -W 1 -c 1 bix.hu && ! ping -W 1 -c 1 www.yahoo.com )&>/dev/null; do /bin/true ; done Or you can write the same as: while (! (ping -W 1 -c 1 bix.hu && ping -W 1 -c 1 www.yahoo.com))&>/dev/null; do /bin/true ; done It's probably not the best way to do it though - this little shell loop eats up fair bit of CPU time. Just putting a "sleep 1" instead of /bin/true makes the load barely noticable but if you're on a system that's using Network Manager then you could also look at the information provided by the nmcli tool to see if it would meet your requirements. Regards, Bryn. -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines |
internet connection tester script
Le ven 28 jan 2011 03:28:22 CET, kellyremo a écrit:
> [ ... ] > $ while $TORF; do ping -W 1 -c 1 bix.hu >& /dev/null && ping -W 1 -c 1 www.yahoo.com >& /dev/null && TORF=false || TORF=true; done > $ > > It just doesn't work. > > Goal: if theres no internet connection, then the oneliner must loop until there is internet connection. if theres internet connection the oneliner ends. > > what am i missing? try : until ping -W 1 -c 1 bix.hu || ping -W 1 -c 1 www.yahoo.com ; do sleep 5 done >& /dev/null Note that ping -W 1 is crazy. -- Philippe _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos |
internet connection tester script
kellyremo wrote:
> http://pastebin.com/raw.php?i=rykHdvBh Hmm, why do you use pastebin if you post the code here anyway? > bix.hu and www.yahoo.com are "pingable" test sites. > 127.0.0.1 could not be pinged [firewall drops all icmp] If your firewall drops all ICMP you can't ping any site. However, if you mean that your firewall blocks only ICMP for localhost, you should reconsider your firewall rules. Nils -- ubuntu-users mailing list ubuntu-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
internet connection tester script
On 01/28/11 3:28 AM, kellyremo wrote:
> bix.hu and www.yahoo.com are "pingable" test sites. > 127.0.0.1 could not be pinged [firewall drops all icmp] what sort of firewall drops packets on localhost ?!? yahoo.com is probably a poor choice of targets, as its a widely distributed group of servers, and you likely will be pinging different servers at different times, maybe even in different parts of the world. I would instead suggest using a target at your ISP or backbone provider. btw, dropping 'all icmp' is bad practice. Internet Control Message Protocol is used for a number of things, including informing applications when a host or port is not accessible. if you drop this, you instead hang for minutes waiting for a response instead of quickly getting back a 'target {host|port} not reachable' error. anyways, if you drop all ICMP, you won't get any pings from anywheres. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos |
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