I have a couple of things I got stuck on
1)
I have a text file containing 25k search string that I need to search against compressed file. I have used this command but somehow it doesn't seems to use all the search terms.
I have put one search string per line in the txt file (I clean up... (2 Replies)
Hi frnds
i want to desplay file names that should be word1 and word2
ex :
i have 10 *.log files
5 files having word1 and word2
5 files having only word1,
i have used below command
egrep -l 'word1|word2' *.log
its giving all 10 files, but i want to display only 5... (20 Replies)
Hi..
How to search for multiple words in a single line using grep?.
Eg: Jack and Jill went up the hill
Jack and Jill were best friends
Humpty and Dumpty were good friends too
----------
I want to extract the 2nd statement(assuming there are several statements with... (11 Replies)
Hello, all! Maybe the title is badly formulated, you can help me with that...!
I'm using the GNU grep, and I need to make sure that grep will extract only what I tell it to.
I have the following regular expression: *?
Well, I need to make sure I grep only a word which may start with a... (11 Replies)
Hello All,
I'm a newbie/rookie in Shell scipting. I've done oracle export of a table using Export utility. When I do export, it generates 2 files.
1> .dmp file
2> .dmp.log file.
In .dmp.log file I have to search for a sentence which goes like '0 records have been inserted' and then... (2 Replies)
Hi,
I want to grep a file if any one (GH, IJ, KL) is not null. If it is null i dont want to pull anything.
cat file | awk '{print ($1)}'
Parameters are : AB=123;CD=456;EF=6789;
cat file | awk '{print ($2)}'
GH=456;IJ=789;KL=1011
eg:
Contents in file:
Parameters are :... (10 Replies)
Hi guys and gals,
I have many files that contains many lines of data. I am trying to find a needle in a haystack in that I'm looking only for files that contain word1 AND word2.
I'm using ...
...
but this is finding files that contains word1 OR word2. No good for me. How can I grep to... (7 Replies)
I'm in need of some kind of script that will search for a string in each logfile in a directory but we don't want to use GREP. GREP seems to use up to much of our memory causing the server to use up a lot of swap space. Our log files are bigger than 500M on a daily basis. We lately started... (8 Replies)
This is actually a KSH under Unix System Services (Z/OS), but hoping I can get a standard AIX/KSH solution to work...
I have a very large, single line file in Windows, that we download via FTP, with the "SITE WRAP" option, into a Z/OS file with an LRECL of 200. This essentially breaks the single... (4 Replies)
Hello,
I have two files. All urls are space seperated.
source
http://xx.yy.zz http://df.ss.sd.xz http://09.09.090.01
http://11.22.33 http://canada.xx.yy http://01.02.03.04
http://33.44.55 http://98.87.76.65 http://russia.xx.zz
http://aa.tt.xx.zz http://1w.2e.3r.4t http://china.rr.tt
... (4 Replies)
Discussion started by: baris35
4 Replies
LEARN ABOUT BSD
grep
GREP(1) General Commands Manual GREP(1)NAME
grep, egrep, fgrep - search a file for a pattern
SYNOPSIS
grep [ option ] ... expression [ file ] ...
egrep [ option ] ... [ expression ] [ file ] ...
fgrep [ option ] ... [ strings ] [ file ]
DESCRIPTION
Commands of the grep family search the input files (standard input default) for lines matching a pattern. Normally, each line found is
copied to the standard output. Grep patterns are limited regular expressions in the style of ex(1); it uses a compact nondeterministic
algorithm. Egrep patterns are full regular expressions; it uses a fast deterministic algorithm that sometimes needs exponential space.
Fgrep patterns are fixed strings; it is fast and compact. The following options are recognized.
-v All lines but those matching are printed.
-x (Exact) only lines matched in their entirety are printed (fgrep only).
-c Only a count of matching lines is printed.
-l The names of files with matching lines are listed (once) separated by newlines.
-n Each line is preceded by its relative line number in the file.
-b Each line is preceded by the block number on which it was found. This is sometimes useful in locating disk block numbers by con-
text.
-i The case of letters is ignored in making comparisons -- that is, upper and lower case are considered identical. This applies to
grep and fgrep only.
-s Silent mode. Nothing is printed (except error messages). This is useful for checking the error status.
-w The expression is searched for as a word (as if surrounded by `<' and `>', see ex(1).) (grep only)
-e expression
Same as a simple expression argument, but useful when the expression begins with a -.
-f file
The regular expression (egrep) or string list (fgrep) is taken from the file.
In all cases the file name is shown if there is more than one input file. Care should be taken when using the characters $ * [ ^ | ( ) and
in the expression as they are also meaningful to the Shell. It is safest to enclose the entire expression argument in single quotes ' '.
Fgrep searches for lines that contain one of the (newline-separated) strings.
Egrep accepts extended regular expressions. In the following description `character' excludes newline:
A followed by a single character other than newline matches that character.
The character ^ matches the beginning of a line.
The character $ matches the end of a line.
A . (period) matches any character.
A single character not otherwise endowed with special meaning matches that character.
A string enclosed in brackets [] matches any single character from the string. Ranges of ASCII character codes may be abbreviated
as in `a-z0-9'. A ] may occur only as the first character of the string. A literal - must be placed where it can't be mistaken as
a range indicator.
A regular expression followed by an * (asterisk) matches a sequence of 0 or more matches of the regular expression. A regular
expression followed by a + (plus) matches a sequence of 1 or more matches of the regular expression. A regular expression followed
by a ? (question mark) matches a sequence of 0 or 1 matches of the regular expression.
Two regular expressions concatenated match a match of the first followed by a match of the second.
Two regular expressions separated by | or newline match either a match for the first or a match for the second.
A regular expression enclosed in parentheses matches a match for the regular expression.
The order of precedence of operators at the same parenthesis level is [] then *+? then concatenation then | and newline.
Ideally there should be only one grep, but we don't know a single algorithm that spans a wide enough range of space-time tradeoffs.
SEE ALSO ex(1), sed(1), sh(1)DIAGNOSTICS
Exit status is 0 if any matches are found, 1 if none, 2 for syntax errors or inaccessible files.
BUGS
Lines are limited to 256 characters; longer lines are truncated.
4th Berkeley Distribution April 29, 1985 GREP(1)