using wget, checkip.dyndns.org, and sed
I am trying to get my external Ip using cygwin on a Windows 7 box. I am almost there but I am having an issue with the sed substitution syntax. As you see, I am getting the IP, but I don't want the part of the output.
C:\>wget -q http://checkip.dyndns.org -O index1.html && sed "s/.*:\(.*\)<.*/\1/" index1.html<br />
208.106.78.22
Without the -q switch the output is:
Current IP CheckCurrent IP Address: 206.108.78.2
How do I have to change the sed command? Instead of creating the index1.html file, I also tried unsuccessfully to use pipe and grep, but failed to get that working properly. Alternative approaches would also be appreciated, but I would like to know what I am doing wrong with the sed commands. I have tried many different variations, but just can't seem to get just the IP address.
Thank you,
mgd
Comments
-
I am not sure if SED is the string manipulator to use for this kind of outputs.
I used cut and Below command could work for you..
wget -q checkip.dyndns.org -O index.html && cat index.html | cut -d '>' -f 7 | cut -d '<' -f 1
Cheers,
blue_raptor0 -
or with awk it could look like this
wget -q checkip.dyndns.org -O index2.html && awk '{print $6}' index2.html | awk -F'<' '{print $1}'
0 -
Hi, Karma
The "cut" and "awk" commands used in your examples produced slightly different results, but each example was most helpful in illustrating the basics of these two commands. I now have two command options for filtering output/text.
Cut produces: Current IP Address: 208.106.8.22
AWK produces: 208.106.8.22
Thank you kindly,0 -
below is for getting only IP using CUT
wget -q checkip.dyndns.org -O index.html && cat index.html|cut -d ' ' -f 6 | cut -d '<' -f 10 -
You could also skip the intermediate file by using curl instead of wget, which is a command whose main use is to pipe a web page as a text stream to some other command. Some systems come without curl preinstalled, but it's quite common (and useful) in scripts, so in that case I recommend installing it.
curl -s checkip.dyndns.org | sed 's/.*<body>Current IP Address: //;s/<\\/body>.*//'
Note the semicolon used in the argument to sed; it's used to separate different expressions when you want to do multiple substitutions without calling sed multiple times.0
Categories
- 8.8K All Categories
- 13 LFX Mentorship
- 66 LFX Mentorship: Linux Kernel
- 355 Linux Foundation Boot Camps
- 228 Cloud Engineer Boot Camp
- 67 Advanced Cloud Engineer Boot Camp
- 23 DevOps Engineer Boot Camp
- 4 Cloud Native Developer Boot Camp
- 738 Training Courses
- 14 LFC110 Class Forum
- 16 LFD102 Class Forum
- 96 LFD103 Class Forum
- 2 LFD121 Class Forum
- 55 LFD201 Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- 14 LFD254 Class Forum
- 425 LFD259 Class Forum
- 78 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- 15 LFS200 Class Forum
- 686 LFS201 Class Forum
- LFS201-JP クラス フォーラム
- 271 LFS211 Class Forum
- 50 LFS216 Class Forum
- 23 LFS241 Class Forum
- 26 LFS242 Class Forum
- 18 LFS243 Class Forum
- 4 LFS244 Class Forum
- 7 LFS250 Class Forum
- LFS250-JP クラス フォーラム
- 105 LFS253 Class Forum
- 754 LFS258 Class Forum
- 7 LFS258-JP クラス フォーラム
- 48 LFS260 Class Forum
- 75 LFS261 Class Forum
- 6 LFS262 Class Forum
- 76 LFS263 Class Forum
- 14 LFS264 Class Forum
- 10 LFS266 Class Forum
- 8 LFS267 Class Forum
- 8 LFS268 Class Forum
- 5 LFS269 Class Forum
- 173 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- 184 LFW211 Class Forum
- 100 LFW212 Class Forum
- 876 Hardware
- 205 Drivers
- 74 I/O Devices
- 43 Monitors
- 115 Multimedia
- 204 Networking
- 98 Printers & Scanners
- 82 Storage
- 716 Linux Distributions
- 78 Debian
- 64 Fedora
- 12 Linux Mint
- 13 Mageia
- 22 openSUSE
- 125 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 344 Ubuntu
- 445 Linux System Administration
- 33 Cloud Computing
- 63 Command Line/Scripting
- Github systems admin projects
- 88 Linux Security
- 73 Network Management
- 105 System Management
- 45 Web Management
- 50 Mobile Computing
- 18 Android
- 19 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 499 Off Topic
- 119 Introductions
- 193 Small Talk
- 19 Study Material
- 743 Programming and Development
- 237 Kernel Development
- 472 Software Development
- 899 Software
- 245 Applications
- 178 Command Line
- 2 Compiling/Installing
- 72 Games
- 313 Installation
- 19 All In Program
- 19 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)