grep is a command-line tool for searching text patterns in files
0
votes
1answer
27 views
Read log file between two dates
I have to read log file between and my question is how to get only the text in the file wich is between two dates using unix commands?
Every line contain date and I want to get the text in the file ...
0
votes
1answer
29 views
How to Get FreeBSD Grep to recognize '-' option?
I am using FreeBSD grep, version 2.5.1, and want to be able to have grep read the pattern from stdin. Other versions of grep I have used allow for the specification of - to enable this feature. ...
2
votes
3answers
57 views
| Grep, Find which file the strings came from
I have a set of PDFs, and I am running
strings * | grep message
This returns the strings containing that method, is there anyway I can get grep to tell me which file it is from?
2
votes
2answers
27 views
Search class names in jars
I'm using this command to search *.jar files for java classes, and I only get the name of the jars that contain those classes:
grep -ral --include=*.jar SignonEJB .
How can I also get the class ...
2
votes
2answers
39 views
How to find files with a certain subpath?
I need to find all xml-files that are placed in folders named config. Also config must be somewhere under a folder named trunk. For example, I am interested in all files like below:
...
0
votes
1answer
52 views
How do I redirect output from the find command (that uses grep) to a log file?
Consider the code to search for all files containing the pattern "search string":
bash-3.2$ # The below find works fine..
bash-3.2$ find . -type f -exec grep -il "search string" {} \;
bash-3.2$ # But ...
3
votes
1answer
74 views
How can I keep color codes with grep input?
It I grep something twice:
... | grep foo | grep bar
It seems foo is not highlighted.
Infact, it seems grep removes colorcodes from its input; Any way to prevent this?
0
votes
1answer
47 views
How to ask for specific parameters with grep?
I need to look in /usr/share/dict/words for a 5-letter word that starts with d or D, followed by a lowercase vowel, and ends with s. I have tried everything but to no avail.
1
vote
2answers
62 views
Split using sed
I have to split
[X] ||| you owns the [X,1] ||| you own the [X,1] ||| 1 0.02020 0.07847 0.36788 3 -0.00000 -0.00000
at the pipes and output those line whose 2nd and 3rd argument are different.
3
votes
1answer
80 views
Understanding grep --label=
I am looking for an explanation how grep --label=LABEL works: Maybe somebody can give me an example [or two] on what --label= is for.
I understand what grep and zgrep are supposed to do – the ...
1
vote
2answers
54 views
linux + match IP ADDRESS with 3 octets or with 4 octets
how to match IP address with 4 octets or with 3 octets in one command?
target - match xxx.xxx.xxx or xxx.xxx.xxx.xxx ( syntax should fit for Linux and Solaris )
how to merge the following commands ...
0
votes
2answers
58 views
Grep to search directories for patterns inside a text file
I have a file where it contains a list of search patterns (searchPattern.txt). Its contents is similar to the contents below where there are 3000+ of them.
123456
234567
345678
.
.
.
What I wanted ...
4
votes
1answer
36 views
Printing Latex source with a2ps
When I try to print out latex source code with
a2ps somefile.tex
I get error messages from egrep like
egrep: Das Ende des angegebenen Intervalls ist nicht gültig
which translates to "the end of ...
44
votes
8answers
2k views
How can I prevent 'grep' from showing up in ps results?
When I search for some process that doesn't exist, e.g.
$ ps aux | grep fnord
wayne 15745 0.0 0.0 13580 928 pts/6 S+ 03:58 0:00 grep fnord
Obviously I ...
2
votes
3answers
82 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
...
1
vote
2answers
38 views
Search and replace full line in recursive files
I'm using:
grep -n -H -o -R -e textword .
List all file recursively under directory '.' with string 'textword' and show the file, line and only portion matching.
I need to remove lines that ...
3
votes
2answers
76 views
How to adjust column width in Linux command output
When I used this command on Red Hat Linux
/usr/sbin/ss -i
I get the following output below:
State Recv-Q Send-Q Local Address:Port ...
3
votes
2answers
54 views
Can I make grep treat escaped multiline as a single line?
How can I make tools like grep treat multilines escaped with a backslash as a long single line?
Let's say I have some files that looks like this:
testvar=test1 \
test2 \
test3
...
5
votes
3answers
201 views
difference between .* and * in regular Expression
I've a file named "test" that contains
linux
Unixlinux
Linuxunix
it's linux
l...x
now when i use grep '\<l.*x\>' , it matches :
linux
it's linux
l...x
but when i use grep '\<l*x\>' ...
1
vote
3answers
90 views
Trying to remove all ids from an HTML file with grep
I'm trying to remove all id=" "s from an .html file but I'm not sure where I am going wrong. I tried using regular expressions but all I am getting is the .html file rendering in my Ubuntu terminal.
...
3
votes
1answer
92 views
Output of `java -version` not matched by grep or awk
On my Linux machine, it isn't clear to me why if I do the following then I don't get only the version string ("1.5.0_32").
# java -version | grep version | awk '{print $NF}'
java version "1.5.0_32"
...
1
vote
2answers
123 views
Unix command for pattern matching
I want to count the number of words and print the matched pattern lines which matches exactly with following pattern:
abc-ERROR:
The input File contains:
# abc-ERROR: xyxxkkfgfr
# def-Error: ...
4
votes
3answers
78 views
Uniquely identifying java processes with same name
I have two java processes which run using the same file name, MyApp.jar (for example).
/usr/java/latest/bin/java -jar MyApp.jar
These jars exist in different places and use different ...
0
votes
1answer
36 views
(e)grep and atomic grouping [comprehension question]
I am trying to understand the correct use of »atomic grouping« a.k.a. »independent subexpressions« a.k.a. »non-backtracking subpattern« [this are the terms I found ...
3
votes
2answers
110 views
greedy and lazy regular expressions (comprehension question)
I am teaching myself regular expressions, and I got stuck at »greedy« vs. »lazy« repeatings.
What I found out so far is that
»greedy« means that the RegExp ...
2
votes
1answer
61 views
How can I get grep to work with “->” as the pattern?
I have this text in a file called temp:
-rw-r--r-- 1 root root 15776 Oct 15 2010 dnd-copy
-rw-r--r-- 1 root root 15776 Oct 15 2010 dnd-link
-rw-r--r-- 1 root root 15776 Oct 15 2010 dnd-move
...
-8
votes
1answer
61 views
can anyone help me with this sed and grep? [closed]
(a) SED
Given a file, replace all the sequences of 4 or more digits with the
word "cat".
(b) GREP
Given a file, display all the lines starting with the word "cat" and
ending with the ...
2
votes
2answers
83 views
add “#” in begining to selected lines in File
Requirement : ADD someting (i.e #) in begining of every line in file A which is grep from file B
File A
abcd
abdc
sdfg
asdfa
jon
ram
File B
jon
abcd
grep file B from file A and add "#" ...
1
vote
2answers
76 views
Confused about inverse grep
So, when you use inverse in grep (egrep -v), this literally means the output is shown upside down (flipped over)?
I think I was more confused when I saw the following examples
$ egrep -v '\ ' ...
1
vote
1answer
66 views
Confused about word boundary
I have been researching this a lot, but I am still not clear on it. What does word boundary mean? What does it do?
So, for example, could someone explain this command to me please?
egrep ...
2
votes
3answers
86 views
Output to stdout and at the same time grep into a file
I have a script that outputs text to stdout. I want to see all this output in my terminal, and at the same time I want to filter some lines and save them in a file. Example:
$ myscript
Line A
Line B
...
1
vote
1answer
77 views
What is a sure fire way to find all files and/or path that contains 2 keywords?
I was doing a
find . -iname '*sitesearch*' | grep demo
because I know the file should be some/path/SiteSearch/demo/SiteSearch.html, but it turned out a person put the file in as ...
0
votes
3answers
130 views
Regular Expression for finding double characters in Bash
I am looking for a regular expression that finds all occurences of double characters in a text, a listing, etc. on the command line (Bash).
Main Question: Is there a simple way to look for sequences ...
1
vote
2answers
138 views
Regular expression problem(s) in Bash: [^negate] doesn't seem to work
When I execute ls /directory | grep '[^term]' in Bash I get a regular listing, as if the grep command is ignored somehow. I tried the same thing with egrep, I tried to use it with double and single ...
0
votes
3answers
49 views
Grep end regex matching
On OS X, system_profiler SPHardwareDataType outputs:
Hardware Overview:
Model Name: MacBook Pro
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 8 GB
I want to ...
3
votes
1answer
167 views
Why doesn't grep ignore binary files by default?
The manpage for grep describes the -I flag as follows:
-I Ignore binary files. This option is equivalent to --binary-file=without-match option.
It also says this about binary files:
...
1
vote
2answers
107 views
Difference betwen grep pattern ^$ and ^
I understand that grep matches all the blank lines for the pattern ^$. But what does just ^ means. When I gave grep '^' filename. It matched all the lines.
Also grep '' filename matched all the lines
...
1
vote
1answer
97 views
How to properly use /usr/xpg4/bin/grep -F
I have a problem producing filtering out hanzoMollusc (2)from my grep.
https://node.hanzo.com/production/application/ (1)
https://node.hanzoMollusc.com/Messaging/Receiver (2)
My grep command is ...
0
votes
1answer
109 views
ps | grep shows bad output in subshell with jobs running in the background
I am using bash. I have a file named "a2draw" that contains only 1 line:
sleep 99999
I start it using this command:
bash a2draw &
Now, I know and understand the trick with square bracket ...
2
votes
4answers
110 views
Grep of many keywords over many files: speeding it up
I am currently facing a "performance problem" while using grep. I am trying to locate the occurrences of many (10,000+) keywords in many (think Linux kernel repository size) files.
The objective is to ...
1
vote
1answer
103 views
Is GREP_OPTIONS= --color=always ignored?
I was playing around with setting GREP_OPTIONS and couldn't get it to work. Just curious as to why.
Simple test commands output:
richard@ubuntu:~$ echo $GREP_OPTIONS
richard@ubuntu:~$
...
0
votes
1answer
54 views
Using grep with symbolic link
I don't know how to ask this, but let me explain.
I have a text file (named bla) in my ~/user/Dropbox folder. I would like to grep on it from any folder in terminal.
For example, I'd like just type ...
0
votes
3answers
58 views
regex suggestion
echo "223255/12345678 " | grep '[0-9a-zA-Z/\-\?:\(\)\.,"\+]{1,34}'
According to the regex, it can have any of 0-9 a-z A-Z / - ? : ( ) . , " + of upto 34 chars in any order. Am I ...
4
votes
4answers
67 views
Bash-completion and grep
I installed a program (iftop) on Debian Squeeze but some days ago I forgot it's name.
I had only this information about the program:
1) It was called *top
2) I could find it using bash-completions.
...
1
vote
3answers
171 views
awk, sed, grep, perl… which to print out in this case?
I have this syntax in a file (http response times from analog):
<thead><tr><th class="x">seconds</th><th class="R">reqs</th><th ...
1
vote
3answers
213 views
Newbie struggles with grep, sed, awk to filter html
I am a beginner linux user, trying to teach myself how to use linux tools on a cygwin install. I decided to make up a project to try to teach myself the basics of shell scripting and simultaneously ...
3
votes
5answers
138 views
Use grep to find all files in a directory with two strings [duplicate]
I am trying to figure out the correct syntax to find two strings, the entire part of each string, anywhere (doesn't have to be near each other) in a file. So any file that has both foo and say the ...
3
votes
4answers
93 views
grep to find “print” not “#print”
In debugging, I use a lot of 'print' and commenting out it with '#print'. How can I use grep to find the line without '#' before 'print'?
# print <- not detect
#print <- not detect
abc # print ...
2
votes
1answer
82 views
Grepping number in a file
I have this command
$ cut -f2,3 AIS2F1 | grep [2-9][0-9]* | cut -f1
So my second and third fields are something like this
Ben 434
Me 12
you 56
So, I thought that the logic should be to cut ...
4
votes
4answers
253 views
Count lines matching pattern and matching previous line
I want to count the number of times that a role is successfully deleted. The problem is that one line of the log file will show that the script is about to delete the role:
Prepare to remove role X
...
