Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Adding a line to a file

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Adding a line to a file
# 8  
Old 12-24-2009
Code:
sed '/^xxx/i New line' file1 > tmp; mv tmp file1

cheers,
Devaraj Takhellambam
# 9  
Old 12-24-2009
ok i found out the issue. the problem is the first word(xxx) of the line im searching for starts in the middle of the line. any solution for this?

Thanks
# 10  
Old 12-24-2009
Quote:
Originally Posted by mwrg
the line im inserting has characters >> and a parametarized path which looks like ${DIR}/${FILE}. could that be the reason its not working?
I don't think so:
Code:
$ printf 'www\nxxx\nyyy\nzzz\n'|sed '/^xxx/i the line im inserting has characters >> and a parametarized path which looks like ${DIR}/${FILE}.'
www
the line im inserting has characters >> and a parametarized path which looks like ${DIR}/${FILE}.
xxx
yyy
zzz

Did you quote properly? Does it also not work with you insert something simple like e.g. a single character?

---------- Post updated at 15:15 ---------- Previous update was at 15:08 ----------
Quote:
Originally Posted by mwrg
ok i found out the issue. the problem is the first word(xxx) of the line im searching for starts in the middle of the line. any solution for this?

Thanks
Just leave out the caret (^). That should do it. If that is not strict enough you can use surrounding characters or characteristics to tighten the search pattern. E.g. if there are only space characters you can use:
Code:
/^[[:space:]]*XXX/

# 11  
Old 12-24-2009
Smilie yes Scrutinizer, that was the issue. i just removed ^ and its inserting fine. could you tel me how to insert the new line with some spaces(predifined) in the begining?

Thanks
# 12  
Old 12-24-2009
You can use a backslash:
Code:
sed '/^[[:space:]]*xxx/i \    Hello I am a new line.'

Last edited by Scrutinizer; 12-24-2009 at 10:54 AM..
# 13  
Old 12-24-2009
Thanks alot Scrutinizer Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Adding line in a file using info from previous line

I have a shell script that looks something like the following: mysql -uroot db1 < db1.sql mysql -uroot db2 < db2.sql mysql -uroot db3 < db3.sql mysql -uroot db4 < db4.sql .... different db names in more than 160 lines. I want to run this script with nohup and have a status later. So,... (6 Replies)
Discussion started by: MKH
6 Replies

2. Shell Programming and Scripting

Adding new line to file

Hi everyone, currently I writing a script for comparing 2 variable in 2 line then output the line with equal value to new file. However, the new file only contain last line only, the earlier line was delete. I do google my problem but still not find the way out. Sorry for my English. Thank you... (10 Replies)
Discussion started by: lazy_bear
10 Replies

3. Shell Programming and Scripting

Adding tab/new line at the end of each line of a file

Hello Everyone, I need a help from experts of this community regarding one of the issue that I am facing with shell scripting. My requirement is to append char's at the end of each line of a file. The char that will be appended is variable and will be passed through command line. The... (20 Replies)
Discussion started by: Sourav Das
20 Replies

4. Shell Programming and Scripting

adding a line to a text file

I have a tab delimited text file, id name distance 1 3325167 0.334561754018 2 3290488 0.389444269458 3 3288794 0.392312701782 4 3347602 0.392532202097 5 3295355 0.394394169485 I need to add a line after the header line. The first and third field of... (3 Replies)
Discussion started by: LMHmedchem
3 Replies

5. Shell Programming and Scripting

Adding New empty line in a file

Hi, I am new to Sed /awk commands. using that i want to add new empty line after every line in a file by leaving first three lines. So, can any one help me out how to achieve this. Example: --------- Input Filename: file1.txt Input Data: --------Report-------- Date:20-10-03... (4 Replies)
Discussion started by: G.K.K
4 Replies

6. Shell Programming and Scripting

Adding data in a file on same line

Hi, I have one file a.txt ,the contents of the file is A B C D E F and I have another file b.txt, the contents of the file is 1 2 3 4 5 6 now when I am using this command cat a.txt b.txt > c.txtI am getting the output as A B C D E F 1 2 3 4 5 6 but i need the output... (2 Replies)
Discussion started by: prarat
2 Replies

7. Shell Programming and Scripting

adding a line to file

i am writing a script which will let user to input a line. i m not sure how do i add this line to the end of a txt file ? (8 Replies)
Discussion started by: 76455
8 Replies

8. Shell Programming and Scripting

Adding filename to each line of the file

Hi, I am a relative new bee in scripting. I need to develop a script such that the code would iterate through each file in a source directory and append every line of the file with '|' and the corresponding file filename. eg INPUT file IF927_1.dat - H|abc... (4 Replies)
Discussion started by: scripting_newbe
4 Replies

9. Shell Programming and Scripting

adding a line to a file

I want to add a line at the beginning and at the end of a file.. e.g. echo "at the beginning.." > tmp_file && cat file >> tmp_file && echo "last line" >> tmp_file && mv tmp_file file is there a nice way for doing that?? Thx (2 Replies)
Discussion started by: andy2000
2 Replies

10. Shell Programming and Scripting

Adding Text To each line of a file

How would I add text to the beginning of each line in a text file in a script right after the file is created from another text file. (4 Replies)
Discussion started by: cubs0729
4 Replies
Login or Register to Ask a Question