All Questions
20
questions
-1
votes
3
answers
320
views
Need to format text file and update based of key value format
I have a file having the below values:
cat data.txt
server1: calv
server2: anot
log: /u/log/1
server3: calv
server4: anot
server5: secd
server6: calv
LIB_TRGT_calv,anot: /tmp/hello.txt
LIB_TRGT_secd: /...
- 511
3
votes
2
answers
8k
views
How to search for a string in a very large file with very long lines?
It turns out I was accidentally using grep wrong yesterday. I just checked my bash history and saw what I was executing:
grep search-string-here -f large-file-with-long-lines.txt
And that was what ...
- 135
0
votes
1
answer
102
views
Print Multiple Substrings Including an IP Address
Good day!
I have a giant input file that displays a lot of garbage and I would like to export multiple substrings. The problem is that sometimes additional information is injected into the file making ...
- 55
0
votes
1
answer
81
views
How to grep/sed a defind part of string that has spaces
I have a log that contains records like:
LineFFF 1234567 0002 @2018-06-12T17:02:50 (len:0) 99 OK : jAFoSSYut2iJLmrk6fdQPL4OMRgd1Ybzb6U9MG1GeWKWqXlYPyfzyMVb9zn3
LineFFF 1234568 0044 @2018-06-12T17:...
- 3
0
votes
4
answers
818
views
Removing lines whose first column is duplicated
I have a file where strings are separated by a special string (not a comma or delimiter) e.g. <vvv>. I want to check if all strings in the first field are unique. If duplicate rows for the same ...
- 851
0
votes
2
answers
1k
views
How can I add incremental integer row in a text file using grep or awk command in linux terminal?
I have a text file which contains 10 million+ lines. The file looks like as bellow:
1902400023
1902400029
1902400031
1902400032
I wanted to add a heading, incremental ID number and a constant ...
- 253
1
vote
4
answers
737
views
How to process a column's multiple strings
I have a comma separated file that looks similar to his format:
aa.com,1.21.3.4,string1 string2 K=12 K2=23 K3=45 K4=56
bb.com,5.6.7.8,string1 string2 K=66 K2=77 K3=88 K4=99
I want to take ...
- 851
2
votes
4
answers
3k
views
How to extract columns before and after a string ocurrence
I have a text file. That looks like:
www.ac.com has address 6.1.1.146 www.ac.com is an alias for ac.com. www.ac.com is an alias for ac.com.
www.ba.net is an alias for www-bn.gs.ba.com. www-bn.gs.ba....
- 851
0
votes
1
answer
369
views
AWK / String manipulation: How to pull strings out from a column and compare it with a number before printing the row
I have a list of data in a table. By using awk to pull out column 5, i was able to differentiate the data amongst the rows. If the entry at column 5 is more than 4, the row should be printed.
...
- 51
0
votes
1
answer
298
views
Remove lines between special characters in Unix [closed]
In my code/text file whatever is between /* and */ is commented -
I have to remove this commented code from my text/code file
$ cat codefile.txt
/*~BB~*************************************
asdasd
...
- 1
1
vote
2
answers
2k
views
Grep from the last occurrence of a pattern to another pattern
Good morning,
I am trying to write a UNIX script for a file with multiple duplicate patterns, followed by the pattern I am looking for. This question is very similar to:
"Get the last occurrence of ...
- 99
1
vote
3
answers
271
views
How to use sed to print part of a string containing hashes (or any alternative solution)?
I am trying to print out a specific string within a line with sed.
The first problem is that I have some difficulties finding a string which contains slashes, I already tried some solutions provided ...
- 13
1
vote
3
answers
4k
views
Find and delete lines containing multiple patterns in a file
I have a list of strings and want to find and delete lines containing these strings in a file. A short example of the list of strings is listed as below.
File S
1Mo 32,33
2Mo 7,26
2Mo 7,27
2Mo 7,28
...
- 197
2
votes
2
answers
1k
views
Match lines beginning with the same pattern in two text files
I am now having two text files with some of the lines beginning with the same pattern. For example,
File A
1Mo 1,1 I love you.
1Mo 1,2 I like you.
Hi 23,3 I am hungry.
Hi 23,4 I am foolish.
File B
...
- 197
1
vote
1
answer
599
views
Reading a string till a key word and replacing from there with another string
I am new to UNIX and am practising shell scripting. I have an application where I need string searching and replacement.
There are some lines in a file 1 and file 2. I have a search key word. If the ...
- 111