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.
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.- curl -s checkip.dyndns.org | sed 's/.*<body>Current IP Address: //;s/<\\/body>.*//'
0
Categories
- All Categories
- 153 LFX Mentorship
- 153 LFX Mentorship: Linux Kernel
- 839 Linux Foundation IT Professional Programs
- 383 Cloud Engineer IT Professional Program
- 185 Advanced Cloud Engineer IT Professional Program
- 86 DevOps Engineer IT Professional Program
- 154 Cloud Native Developer IT Professional Program
- 151 Express Training Courses & Microlearning
- 149 Express Courses - Discussion Forum
- 2 Microlearning - Discussion Forum
- 6.9K Training Courses
- 49 LFC110 Class Forum - Discontinued
- 74 LFC131 Class Forum
- 55 LFD102 Class Forum
- 248 LFD103 Class Forum
- 25 LFD110 Class Forum
- 48 LFD121 Class Forum
- 2 LFD123 Class Forum
- 1 LFD125 Class Forum
- 19 LFD133 Class Forum
- 10 LFD134 Class Forum
- 19 LFD137 Class Forum
- 1 LFD140 Class Forum
- 73 LFD201 Class Forum
- 8 LFD210 Class Forum
- 6 LFD210-CN Class Forum
- 2 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- 3 LFD233 Class Forum
- 5 LFD237 Class Forum
- 25 LFD254 Class Forum
- 733 LFD259 Class Forum
- 111 LFD272 Class Forum - Discontinued
- 4 LFD272-JP クラス フォーラム - Discontinued
- 15 LFD273 Class Forum
- 352 LFS101 Class Forum
- 3 LFS111 Class Forum
- 4 LFS112 Class Forum
- 4 LFS116 Class Forum
- 9 LFS118 Class Forum
- 2 LFS120 Class Forum
- 11 LFS142 Class Forum
- 9 LFS144 Class Forum
- 5 LFS145 Class Forum
- 6 LFS146 Class Forum
- 5 LFS147 Class Forum
- 20 LFS148 Class Forum
- 17 LFS151 Class Forum
- 6 LFS157 Class Forum
- 78 LFS158 Class Forum
- 1 LFS158-JP クラス フォーラム
- 13 LFS162 Class Forum
- 2 LFS166 Class Forum - Discontinued
- 8 LFS167 Class Forum
- 4 LFS170 Class Forum
- 2 LFS171 Class Forum - Discontinued
- 4 LFS178 Class Forum - Discontinued
- 4 LFS180 Class Forum
- 3 LFS182 Class Forum
- 6 LFS183 Class Forum
- 1 LFS184 Class Forum
- 36 LFS200 Class Forum
- 737 LFS201 Class Forum - Discontinued
- 3 LFS201-JP クラス フォーラム - Discontinued
- 22 LFS203 Class Forum
- 141 LFS207 Class Forum
- 3 LFS207-DE-Klassenforum
- 3 LFS207-JP クラス フォーラム
- 302 LFS211 Class Forum - Discontinued
- 56 LFS216 Class Forum - Discontinued
- 58 LFS241 Class Forum
- 51 LFS242 Class Forum
- 39 LFS243 Class Forum
- 17 LFS244 Class Forum
- 7 LFS245 Class Forum
- 1 LFS246 Class Forum
- 1 LFS248 Class Forum
- 120 LFS250 Class Forum
- 3 LFS250-JP クラス フォーラム
- 2 LFS251 Class Forum
- 160 LFS253 Class Forum
- 1 LFS254 Class Forum - Discontinued
- 3 LFS255 Class Forum
- 14 LFS256 Class Forum
- 2 LFS257 Class Forum
- 1.3K LFS258 Class Forum
- 12 LFS258-JP クラス フォーラム
- 139 LFS260 Class Forum
- 165 LFS261 Class Forum
- 44 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 25 LFS267 Class Forum
- 26 LFS268 Class Forum
- 38 LFS269 Class Forum
- 11 LFS270 Class Forum
- 202 LFS272 Class Forum - Discontinued
- 2 LFS272-JP クラス フォーラム - Discontinued
- 2 LFS274 Class Forum - Discontinued
- 4 LFS281 Class Forum - Discontinued
- 30 LFW111 Class Forum
- 263 LFW211 Class Forum
- 187 LFW212 Class Forum
- 16 SKF100 Class Forum
- 2 SKF200 Class Forum
- 3 SKF201 Class Forum
- 799 Hardware
- 200 Drivers
- 68 I/O Devices
- 37 Monitors
- 104 Multimedia
- 175 Networking
- 91 Printers & Scanners
- 85 Storage
- 763 Linux Distributions
- 82 Debian
- 67 Fedora
- 18 Linux Mint
- 13 Mageia
- 23 openSUSE
- 149 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 356 Ubuntu
- 472 Linux System Administration
- 39 Cloud Computing
- 71 Command Line/Scripting
- Github systems admin projects
- 96 Linux Security
- 78 Network Management
- 102 System Management
- 48 Web Management
- 71 Mobile Computing
- 19 Android
- 39 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 382 Off Topic
- 116 Introductions
- 178 Small Talk
- 27 Study Material
- 814 Programming and Development
- 307 Kernel Development
- 489 Software Development
- 1.8K Software
- 263 Applications
- 183 Command Line
- 4 Compiling/Installing
- 988 Games
- 317 Installation
- 106 All In Program
- 106 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)