3
votes
1answer
115 views

Why does grep treat '[D]ebug' string differently?

I've created simple text file named "T" to test the unusual behavior of grep: 1 Debug 2 debug 3 determined 4 Determined Tried different syntax: $ grep De T 1 Debug ...
4
votes
1answer
313 views

Why does grep sometimes show the file name, sometimes not?

Can somebody please explain to me why I don't get the full path in example 1? example 1 - returning found line grep MODIFY /opt/releases/packages/cr_c_cr6/sas/dbms/*/*; outcome: MODIFY example 2 ...
9
votes
2answers
339 views

What is the difference between “*.pl” and *.pl in grep? Why does quoting change the result?

What is the difference between: grep "string" . -r --include *.pl and grep "string" . -r --include "*.pl" The latter includes files in subdirectoried while the former not. Why?
2
votes
3answers
379 views

Very strange behavior with grep and IFS

I'm having trouble using grep, the returned results are "n-empty", I mean without the 'n' character... This is the script sample : OLDIFS=$IFS IFS="\\n" i=$(grep -ril $1 *) echo $i IFS=$OLDIFS ...
9
votes
2answers
461 views

“grep -r foo *” vs “grep -r foo .”

When using grep -r you could search in all files with either * or . and it seems to return the same thing but is it really the same? Let's say I search for "foo", then I could write grep -r foo * ...
1
vote
1answer
907 views

Difficulty making a regular expression to find at least 2 occurrences of a character in a file

I have a file containing random codes. Each code has ten characters in it, and I am trying to grep codes in the file that have at least 2 occurrences of a character. I am doing this: grep DD* ...
8
votes
1answer
12k views

How can I assign the result of a command to a shell variable?

I want to assign the result of an expression to a variable and concatenate it with a string, then echo it. Here's what I've got: #!/bin/bash cd ~/Desktop; thefile= ls -t -U | grep -m 1 "Screen Shot"; ...
5
votes
4answers
3k views

Find a string only in a specific file inside subdirectories

Let's say I need to find the function GetTypes() in all C# source file (.cs) the directories/subdirectories. I used grep -rn GetTypes *.cs, but I got an error with grep: *.cs: No such file or ...