Grep -B used with -f? (Searching a file using a list of terms, output is lines before each match)

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1. Shell Programming and Scripting

Searching for exact match using grep

I am searching for an exact match on a value read from another file to lookup an email address in another file. The file being checked is called "contacts" and it has Act #, email address, and contact person. 1693;abc1693@yahoo.comt;Tommy D 6423;abc6423@yahoo.comt;Jim Doran...

2. UNIX for Dummies Questions & Answers

Grep? - using a file of terms to search another file when the information is on a different line

I have a flat file that looks like this, let's call it Chromosome_9.txt: FT /Gene_Name="Guanyl-Acetylase 9" FT /Gene_Number"36952" FT /Gene_Name="Endoplasmic Luciferase" FT /Gene_Number"36953" FT ...

3. Shell Programming and Scripting

Output block of lines in a file based on grep result

Hi I would appreciate your help with this. I have a output file from a command. It is broken based on initial of the users. Exmaple of iitials MN & SS. Under each section there is information pertaining to the user however each section can have different number of lines. MY challenge is to ...

4. Shell Programming and Scripting

Match list of strings in File A and compare with File B, C and write to a output file in CSV format

Hi Friends, I'm a great fan of this forum... it has helped me tone my skills in shell scripting. I have a challenge here, which I'm sure you guys would help me in achieving... File A has a list of job ids and I need to compare this with the File B (*.log) and File C (extend *.log) and copy...

5. Shell Programming and Scripting

Grep multiple terms and output to individual files

Hi all, I'll like to search a list of tems in a huge file and then output each of the terms to individual files. I know I can use grep -f list main.file to search them but how can I split the output into individual files? Thank you.

6. UNIX for Dummies Questions & Answers

Searching for terms contained in 2 separate files

Hi All ! As a dummy, I try to search for multiple string of characters contained in 2 types of list. Not clear? No it's not. Example: I have a tab-delimited file called "inventory" with 2 columns that looks like that: #ref #year,color xrt3 2000,blue gf5 2000,red,green,yellow...

7. Shell Programming and Scripting

Find common terms in two text file, xargs, grep

Hello, I'm interested in finding all occurrences of the terms in file1 in file2, which are both csv files. I can do this with a loop but I'm interested in knowing if I can also do it with the help of xargs and grep. What I have tried: cat file1 | xargs grep file2 The problem is that...

8. Shell Programming and Scripting

Script to search a large file with a list of terms in another file

Hi- I am trying to search a large file with a number of different search terms that are listed one per line in 3 different files. Most importantly I need to be able to do a case insensitive search. I have tried just using egrep -f but it doesn't seam to be able to handle the -i option when...

9. UNIX for Dummies Questions & Answers

How to list file names instead of lines when grep a gzcat command?

Hi, I want to list filenames instead of lines when i search in compresed files for a string. #gzcat *.gz | grep -l 12345 gives me: <stdin> Anyone got a solution on this problem?

UNIX for Dummies Questions & Answers