How can I fetch few parameters in Shell script?

Login or Register to Ask a Question and Join Our Community

How can I fetch few parameters in Shell script?

Tags

awk, grep, linux, shell scripts, shellscripting, solved

Login to Discuss or Reply to this Discussion in Our Community

Top Forums Shell Programming and Scripting How can I fetch few parameters in Shell script?

07-23-2014

Banned

41, 0

Join Date: Mar 2014

Last Activity: 20 August 2014, 10:53 AM EDT

Posts: 41

Thanks Given: 10

Thanked 0 Times in 0 Posts

How can I fetch few parameters in Shell script?

Hi All,

I want to fetch few details out of a huge output of AWS CLI tools :

I am using this command :

Code:

ec2-describe-instances

Last edited by Palak Sharma; 08-14-2014 at 05:33 PM..

Palak Sharma

View Public Profile for Palak Sharma

Find all posts by Palak Sharma

07-23-2014

Registered User

559, 160

Join Date: Jul 2012

Last Activity: 20 September 2019, 7:24 AM EDT

Location: India, Hyderabad

Posts: 559

Thanks Given: 11

Thanked 160 Times in 148 Posts

Replace the above awk with below

Code:

awk -F "\t" 'BEGIN{print "INSTANCE ID\tINSTANCE TYPE"} /INSTANCE/ {print $2 "\t" $7}'

---------- Post updated at 04:04 AM ---------- Previous update was at 04:01 AM ----------

Code:

ec2-describe-instances | awk -F "\t" 'BEGIN{print "INSTANCE ID\tINSTANCE TYPE"} /INSTANCE/ {print $2 "\t" $7}'

SriniShoo

View Public Profile for SriniShoo

Find all posts by SriniShoo

07-23-2014

Banned

41, 0

Join Date: Mar 2014

Last Activity: 20 August 2014, 10:53 AM EDT

Posts: 41

Thanks Given: 10

Thanked 0 Times in 0 Posts

The output I am getting from your command is :

Code:

INSTANCE ID	INSTANCE TYPE
i-c		cloud
i-6		cloud
i-c		pub

Instead of picking up the instance type its picking up the keys

Palak Sharma

View Public Profile for Palak Sharma

Find all posts by Palak Sharma

07-23-2014

Registered User

559, 160

Join Date: Jul 2012

Last Activity: 20 September 2019, 7:24 AM EDT

Location: India, Hyderabad

Posts: 559

Thanks Given: 11

Thanked 160 Times in 148 Posts

Code:

ec2-describe-instances | awk -F "\t" 'BEGIN{print "INSTANCE ID\tINSTANCE TYPE"} /INSTANCE/ {print $2 "\t" $9}'

This User Gave Thanks to SriniShoo For This Post:

SriniShoo

View Public Profile for SriniShoo

Find all posts by SriniShoo

07-23-2014

Banned

41, 0

Join Date: Mar 2014

Last Activity: 20 August 2014, 10:53 AM EDT

Posts: 41

Thanks Given: 10

Thanked 0 Times in 0 Posts

Thanks a bunch

can you help me further.

I have stored the output in a file called

Code:

Instances

The instances file has this detail:

Code:

INSTANCE ID         INSTANCE TYPE        INSTANCE STATE
i-8					t1.micro			  running
i-5					m3.medium			  running
i-b					m3.large			  running
i-e					m3.medium			  running
i-3					t1.micro			  running

I want to have a check that if the instance type is not t1.micro or t2.micro and the state is running then it should stop the instances with command

Code:

 ec2-stop-instances  instance id

How can I implement this ?

Palak Sharma

View Public Profile for Palak Sharma

Find all posts by Palak Sharma

07-23-2014

Registered User

559, 160

Join Date: Jul 2012

Last Activity: 20 September 2019, 7:24 AM EDT

Location: India, Hyderabad

Posts: 559

Thanks Given: 11

Thanked 160 Times in 148 Posts

Code:

awk -F "\t" 'NR > 1{if($2 != "t1.micro" && $2 != "t2.micro" && $3 == "running") print $1}' Instances | while read line
do
  ec2-stop-instances "${line}"
done

---------- Post updated at 06:28 AM ---------- Previous update was at 06:25 AM ----------

or

Code:

awk -F "\t" 'NR > 1{if($2 != "t1.micro" && $2 != "t2.micro" && $3 == "running") system("ec2-stop-instances " $1)}' Instances

This User Gave Thanks to SriniShoo For This Post:

SriniShoo

View Public Profile for SriniShoo

Find all posts by SriniShoo

07-23-2014

Banned

41, 0

Join Date: Mar 2014

Last Activity: 20 August 2014, 10:53 AM EDT

Posts: 41

Thanks Given: 10

Thanked 0 Times in 0 Posts

It worked.

Palak Sharma

View Public Profile for Palak Sharma

Find all posts by Palak Sharma

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Shell script to fetch values in csv

I need to fetch below values from this file.

2. Shell Programming and Scripting

Shell script to create runtime variables based on the number of parameters passed in the script

Hi All, I have a script which intends to create as many variables at runtime, as the number of parameters passed to it. The script needs to save these parameter values in the variables created and print them abc.sh ---------- export Numbr_Parms=$# export a=1 while do export...

3. Shell Programming and Scripting

Fetch the latest filename shell script

Hi I want to fetch the latest file form the list example example= filename RATE_STATE_SETUPS.20151222.ccyymmdd.hhmmss.txt File pick which have latest ccyymmdd.hhmmss list of file in directory are RATE_STATE_SETUPS.20151222.20151222.170101.txt...

4. Programming

csh: Parameters in Shell Script Help

I have a program that is designed to take the first parameter (a file extension) and use it to rewrite the file stored in the second paramerter with the new extension. And if the current file does not exist then the program will print an error message "No such file." For example, my program is...

5. UNIX for Dummies Questions & Answers

shell script with parameters?

hi , I wanted to create a script, and I have no idea how to, and I would appreciate any help on that. Any advice on solving this is welcome. Thanks Here it goes: make a shell script in bash that show the activity of users. The results should be a summary or a complete report in a file....

6. Shell Programming and Scripting

call another shell script and pass parameters to that shell script

Hi, I basically have 2 shell scripts. One is a shell script will get the variable value from the user. The variable is nothing but the IP of the remote system. Another shell script is a script that does the job of connecting to the remote system using ssh. This uses a expect utility in turn. ...

7. Shell Programming and Scripting

How to fetch data from oracle in unix shell script

Hi, How to fetch data from oracle database in unix shell scripting. list=`sqlplus -s ds_user/dsuser@EMI <<EOF set feedback off set serveroutput on set heading off set pagesize 0 set tab off select IP_ID from table / exit EOF` The output is not what i expected.I need output in...

8. Shell Programming and Scripting

fetch hostname and instance name using shell script

Hi All, Requirement is to fetch hostname and instance name using shell script from all configuration files on a server R12 on IBM AIX... could anyone please share such an experience encountered before.Is there such a script available in this forum or any other site.. Thanks for your time!...

9. Shell Programming and Scripting

Accessing the parameters of a shell script

Hi, I have one situation. I am developing a shell script to which parameters will be passed from a Web based User Interface using some Business Process(BP).There are some 6 parameters for which user will enter the values in UI. These values will be passed to script by BP in the form -...

10. Shell Programming and Scripting

help me in sending parameters from sqlplus script to unix shell script

Can anybody help me out in sending parameters from sql*plus script to unix shell script without using flat files.. Initially in a shell script i will call sql*plus and after getting some value from some tables, i want that variable value in unix shell script. How can i do this? Please tell me...

Login or Register to Ask a Question