Validating an ip address in a bash script
Selector .selector_input_interaction .selector_input. Selector .selector_input_interaction .selector_spinner.
But I havn’t bothered to get the configuration automatically updated when my dynamic ip address changes.
There’s also a little bit of security, the addresses must validate.
This ensures that […]Just wrote a quick shell script to test web server cache and background updating by displaying header output from curl.
Don’t have time to write a description here, just having the script for reference.
| tr 'n' ' ')" if [ "$BL" == "dnsbl.httpbl.org" ]; then LISTED="$(dig short -t a $.$.$.)" echo $ else LISTED="$(dig short -t a $.$.)" echo $ fi done # --- EOT ------$ ./blcheck .235 IP .235 NAME --- 2011-10-14_ [your_api_key].235.1.dnsbl.
I want the tests/bandwidth used to be completely apart from the Primary IP so I want to carry out the operations using the Secondary IP. It doesn't actually use any commands as one of the script is network related and keeps track of data, scans a list of servers off a master IP and updates data. I have tried using "bind-address" commands which you might be referring to but they are command related, true.
This is not much about bash and not even so much about the commands you use in the script.
Type /sbin/ipconfig command to display IP address: eth0 Link encap: Ethernet HWaddr 00:0F: EA: inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20f:eaff:fe7/64 Scope: Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:31167 errors:0 dropped:0 overruns:0 frame:0 TX packets:26404 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:38338591 (36.5 Mi B) TX bytes:3538152 (3.3 Mi B) Interrupt:18 Base address:0xc000 lo Link encap: Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope: Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1994 errors:0 dropped:0 overruns:0 frame:0 TX packets:1994 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:188041 (183.6 Ki B) TX bytes:188041 (183.6 Ki B)2: eth0: mtu 1500 qdisc mq state UP qlen 1000 link/ether b8:ac:6f::e5 brd ff:ff:ff:ff:ff:ff inet 192.168.2.100/24 brd 192.168.2.255 scope global eth0 inet6 fe80::baac:6fff:fee5/64 scope link valid_lft forever preferred_lft forever The author is the creator of nix Craft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting.
He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Note: The commands used in the script won't know about the modified source IP but that shouldn't generally be a problem.