UNIX for Beginners Questions & Answers

I have 13 text files and almost all of them contain the same string.
but some file has diffrent string inside.
I want to send that file which has a diffrent string inside

Hello Sagar,

Request you to please do always provide 3 important things required by the forums.

1st- Sample of Input_file(which has your sample input(s) etc) in CODE TAGS.

2nd- Sample of your expected output(which should come after running script/code) in CODE TAGS too.

3rd- Most important thing, your efforts. We encourage all users to add their efforts which they have put in order to solve their own problems in their posts in CODE TAGS, don't bother either your written code(s) are correct or wrong just post them in your posts and when you get guidance from this community then you could see where you were lacking or missing the things etc and that's the thought behind it(LEARNING).

Kindly do mention all details mentioned above clearly in your post and do let us know I am pretty sure you will get good guidance on this site, Keep learning, keep sharing on this site, cheers


Thanks,
R. Singh

Hello R.Singh sir,

Code:

file01
Hello Sagar

file02
Hello Sagar

file03
Hello Rohit

file04
Hello Sagar

file 05
Hello Vishal

file06 

file07
Hello Sagar

++++++++++++++++++++++++++++++++++++++++++++++++++

These are my 7 input file,
I want the file which does not contain "Hello Sagar" as an Output file

Code Used by me

Code:

grep "Hello Sagar"  file0?

to get the file contain "Hello Sagar"
After that i am unable to proceed

Moderator's Comments:

Kindly do wrap your samples in CODE TAGS.

Hello Sagar Singh,

Could you please try following(not tested it though).

Code:

grep -L "Hello Sagar" *

Thanks,
R. Singh

Input files

file01

Code:

Hello Sagar

file02

Code:

Hello Sagar

file03

Code:

Hello Rohit

file04

Code:

Hello Sagar

file 05

Code:

Hello Vishal

file06

Code:

file07

Code:

Hello Sagar

=======================================================


Output required

Code:

file03
Hello Rohit

file 05
Hello Vishal

file06

==============================

how can I get that files as output which do not contain " Hello Sagar"

Hello Sagar Singh,
I am having difficulty understanding what you are trying to do.

In post #1 you said you have thirteen files to search. In post #3 you said you have seven files and sort of showed us their contents. It seems that you are saying that each of your input files has a filename that is the string file followed by two octal or decimal digits, each file contains exactly one line of text, and if that line of text is not " Hello Sagar you want to print the filename and the contents of each file that does not contain that text and only that text with each output filename and contents separated from other filenames and their contents by an empty line of text.

But since none of your sample input files contain the leading <space> character that you say must be present, it would seem that the output should include every input file that you have shown us.

Have I understood your requirements correctly?

If you are not looking for a leading <space> character before "Hello Sagar" and just want a list of lines in file that do not contain the fixed string "Hello Sagar", then the command:

Code:

grep -Fv "Hello Sagar"

would give you a list of files that contain lines that do not match your pattern with the filename prepended to each line that does not match.

If you just want the filenames of files that do not contain your pattern, the code Ravinder suggested my be exactly what you want, but the grep -L option is an extension to the standards and will not be available on all systems. And, since you haven't told us what operating system you're using, we can't know if his suggestion will work in your environment.

If you really want the output to contain empty lines between the filenames and contents of each file that does not contain any line that matches your pattern, we could help you write a shell script that would do that, but we would need to know what shell you are using as well as what operating system you're using.

In your first post in this thread you said: "I want to send that file which has a diffrent string inside". Where do you want to send those files?

Please help us help you by providing details about the operating system you' are using, the shell you are using, more details about the format of the files you are processing, and an English description of the output you are trying to produce.

All grep implementations i have seen so far have ":" (colon) as the separator between the matched contents and the filename (to be honest i don't know if this is required by the standards or just convention), so:

Code:

grep -Fv <fileglob here> | cut -d':' -f1

should provide a standards-conformant alternative to grep -L, no??

I hope this helps.

bakunin