Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Insert between lines.

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Insert between lines.
# 1  
Old 11-04-2009
Insert between lines.
Hello...I'm here again.
This is the situation

I want check if exist text between two lines:

Example:

interface
description --text to verify
ip adress

if not exists text between 'interface' and 'ip address' i want insert the word 'no description'

interface
no description --if not exists text here
ip address

Thanks.
# 2  
Old 11-04-2009
Something like this?

Code:
awk '
/interface/{
  print
  getline
  if($0=="ip address"){
    print "no description"
  }
}
{print}
' file

# 3  
Old 11-04-2009
Quote:
Originally Posted by Franklin52
Something like this?

Code:
awk '
/interface/{
  print
  getline
  if($0=="ip address"){
    print "no description"
  }
}
{print}
' file

Not exactly...

I have this text in the file:

interface
description
ip address

But I also have this text:

interface
ip address

then I want insert the word "no description" when no exists text between "interface" and "description".

Help me please!!
# 4  
Old 11-04-2009
What's wrong with this output?

Code:
$ cat file
interface
description
ip address
interface
ip address
interface
description
ip address
interface
ip address
interface
description
ip address
$ awk '
/interface/{
  print
  getline
  if($0=="ip address"){
    print "no description"
  }
}
{print}
' file
interface
description
ip address
interface
no description
ip address
interface
description
ip address
interface
no description
ip address
interface
description
ip address
$

# 5  
Old 11-05-2009
Quote:
Originally Posted by Franklin52
What's wrong with this output?

Code:
$ cat file
interface
description
ip address
interface
ip address
interface
description
ip address
interface
ip address
interface
description
ip address
$ awk '
/interface/{
  print
  getline
  if($0=="ip address"){
    print "no description"
  }
}
{print}
' file
interface
description
ip address
interface
no description
ip address
interface
description
ip address
interface
no description
ip address
interface
description
ip address
$

Sorry....it works...thanks!
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Using sed to insert text between lines

Hello, I am trying to insert a section of text between lines in another text file. The new lines to be inserted are: abcd.efgh.zzzz=blah abcd.efgh.xxxx=blah Where N = 0 to 2 Original File: abcd.efgh.wwxx=aaaaa abcd.efgh.yyzz=bbbbb abcd.efgh.wwxx=aaaaa abcd.efgh.yyzz=bbbbb... (3 Replies)
Discussion started by: tsu3000
3 Replies

2. Shell Programming and Scripting

Insert text before first 'n' lines

I want to put a particular text, say, the hash '#' before each of the first n lines of a file. How can I do that? (4 Replies)
Discussion started by: hbar
4 Replies

3. Shell Programming and Scripting

Insert a string instead of blank lines

how can i insert a string sush as "###" instead of blank lines in a file? i try this code but it doesn't work! awk 'NF<1 {$1=="###" ; print$0}' in_file > out_file (13 Replies)
Discussion started by: oreka18
13 Replies

4. Shell Programming and Scripting

sed - insert two lines

I have done this sed command to insert one line after a specific string is found: sed '/patternstring/ a\ new line string' file1 But how do I insert two lines? This is not possible: sed '/patternstring/ a\ new line string \a new line string 2' file1 (2 Replies)
Discussion started by: locoroco
2 Replies

5. Shell Programming and Scripting

Insert string in alternate lines

Hi All, In continuation of my previous thread 'Add text at the end of line conditionally', I need to further modfiy the file after adding text at the end of the line. Now, I need to add a fixed charater string at alternate lines starting from first line using awk or sed.My file is now as below:... (10 Replies)
Discussion started by: angshuman
10 Replies

6. Shell Programming and Scripting

[Perl] Insert lines before lines.

Hi, New problem, or challenge as they prefer in the US. I need to insert some lines in a file before certain other lines. To make it more clear: Original file: aaaa bbbbb ccccc ddddd bbbbb fffff ggggg Now I want to insert the line "NEW_NEW_NEW" when I match "fffff", but I want... (7 Replies)
Discussion started by: ejdv
7 Replies

7. Shell Programming and Scripting

Insert Title To Each Lines

I have a command that returns following, but it's missing a title for each line. YOUR FULL NAME YOUR ID YOUR EMAIL YOUR ADDRESS YOUR PHONE Now, I want to add its title to each line: Name: YOUR FULL NAME ID: YOUR ID Email: YOUR EMAIL Address: YOUR ADDRESS Phone:... (2 Replies)
Discussion started by: tqlam
2 Replies

8. Shell Programming and Scripting

Insert lines between delimiters

I'm working with a file like: somestuff somemorestuff ... someadditionalstuff STARTTAG ENDTAG someotherstuff somecoolstuff ... somefinalstuffI've got some text (either in a file or piped) to put between STARTTAG and ENDTAG. I was thinking something like grepping for the line number of... (2 Replies)
Discussion started by: BMDan
2 Replies

9. Shell Programming and Scripting

insert multiple lines into a file

Hi all, I've got some problems with editing a big configuration file .. its about 2k lines long.. anyway what I need is to place certain text to certain line number.. lets say I need to place "Something" on line 980 .. "something" else on line number 1500 and so on without tempering the rest of... (12 Replies)
Discussion started by: c0mrade
12 Replies

10. Shell Programming and Scripting

how to insert few lines in the called script

I have a situation where in a few lines have to be added into a script at some particular location. It is to be done from a file in another location just by running this file we should move the desired content into the target file. ne one tell me..whats d solution for this (7 Replies)
Discussion started by: suri
7 Replies
Login or Register to Ask a Question