Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Delete Strings that are present in another file

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Delete Strings that are present in another file
# 1  
Old 02-24-2009
Delete Strings that are present in another file
HI,

if a String is present in file1.txt, i want to delete that String from file2.txt.

How can i do this??

I am sure that the file1.txt is a subset of file2.txt.
# 2  
Old 02-24-2009
Do you mean remove lines common to both files?
Code:
grep -v -f file1.txt file2.txt > newfile

Otherwise please post example input files and a few lines of expected output.
# 3  
Old 02-24-2009
No, Thanks. This was what i wanted.
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Delete specific strings in a file

Hi, My file has a numerous sttrings.I want to retain those strings which start with stt and delete entries with >C For eg: my infile is >C4603985... (7 Replies)
Discussion started by: sa@@
7 Replies

2. Shell Programming and Scripting

How to delete strings in a file?

hi, i have a big file like this: >s31 length=12 numreads=6 gene=isotig454 status=igo ldfddfdfdfdkkkkkkfdfdkkkksdfdkkkkkkkkkksdfd dfdfdfldfdkdffdlfddflfdjkkkkkkfdgkkgfhghfgkkk ldfddfdfdfdkkkkkkfdfdkkkksdfdkkkkkkkkkksdfd dfdfdfldfdkdffdlfddflfdjkkkkkkfdgkkgfhghfgkkk >c2 length =344... (4 Replies)
Discussion started by: the_simpsons
4 Replies

3. Shell Programming and Scripting

Need unix commands to delete records from one file if the same record present in another file...

Need unix commands to delete records from one file if the same record present in another file... just like join ... if the record present in both files.. delete from first file or delete the particular record and write the unmatched records to new file.. tried with grep and while... (6 Replies)
Discussion started by: msathees
6 Replies

4. Shell Programming and Scripting

Return error if - or certain characters are present in a list of strings

I have a list of strings, for example: set strLst = "file1 file2 file3 file4" I want to log an error if some of the fields happen to begin with -, or have characters like ; : ' , ? ] { = Which means for example setting set ierr = 1 (2 Replies)
Discussion started by: kristinu
2 Replies

5. Shell Programming and Scripting

Delete a pattern present in file 2 from file 1 if found in file 1.

I have two files File1 ==== 1|2000-00-00|2010-02-02|| 2| 00:00:00|2012-02-24|| 3|2000-00-00|2011-02-02|| File2 ==== 2000-00-00 00:00:00 I want the delete the patterns which are found in file 2 from file 1, Expected output: File1 ==== (5 Replies)
Discussion started by: machomaddy
5 Replies

6. Shell Programming and Scripting

Delete lines in file containing duplicate strings, keeping longer strings

The question is not as simple as the title... I have a file, it looks like this <string name="string1">RZ-LED</string> <string name="string2">2.0</string> <string name="string2">Version 2.0</string> <string name="string3">BP</string> I would like to check for duplicate entries of... (11 Replies)
Discussion started by: raidzero
11 Replies

7. Shell Programming and Scripting

How to run a loop for assigning strings which are present in a file to an array

Hi Forum, I am struggling with the for loop in shell script. Let me explain what is needed in the script. I have a file which will conatin some strings like file1 place1 place2 place3 checkpoint some other text some more text Now what my requirement is the words ... (2 Replies)
Discussion started by: siri_14
2 Replies

8. Shell Programming and Scripting

recursively delete the text between 2 strings from a file

i have 200000bytes size of a unix file i need to delete some text between two strings recursively using a loop with sed or awk . these two strings are : 1st string getting from a file :::2 nd string is fi...its constant . can anyone help me sed -n'/<1 st string >/,/fi/' <input_filename> is the... (2 Replies)
Discussion started by: santosh1234
2 Replies

9. Shell Programming and Scripting

Delete strings in a file

Hi, I have a file named status.txt that looks like the file below. What I want to do is to delete the part <status> and </status> and just leave the number and print each number per line. How can I do it? If I will use sed or awk how can I do it? I tried with sed but it didn't work. Maybe I... (8 Replies)
Discussion started by: ayhanne
8 Replies
Login or Register to Ask a Question