IN a file I need to check for 3 patterns if all the 3 patterns are in the file. I need to send out an email. All this needs to be done in korn shell script. Please advise. (1 Reply)
Hi,
I have a log file which might have certain paragraphs.
Switch not possible Error code 1234
Process number 678
Log not available Error code 567
Process number 874
.....
......
......
Now I create an exception file like this.
cat text.exp
Error code 1234
Process number 874 (7 Replies)
In a directory, there are two different file extensions (*.txt and *.xyz) having similar names of numerical strings (*). The (*.txt) contains 5000 multiple files and the (*.xyz) also contains 5000 multiple files. Each of the files has around 4000 rows and 8 columns, with several unique string... (5 Replies)
I have a file name in $f. If $f has "-" at the beginning, or "=", or does not have extension ".ry" or ".xt" or ".dat" then cerr would not be empty.
Tried the following but having some problems.
set cerr = `echo $f | awk '/^-|=|!.ry|!.xt|!.dat/'` (4 Replies)
Hi Guys,
I have file like below, I want to print all lines between test1231233 to its 10 occurrence(till line 41)
test1231233
qwe
qwe
qweq123
test1231233
qwe
qwe
qweq23
test1231233
qwe
qwe
qweq123
test1231233
qwe
qwe
qweq123131 (3 Replies)
Hi Experts
I need to match 2 patterns consecutively and display 25 lines after that.
1st one - Error
2nd one - End string ( comes along with the pattern one)
3rd one - error
Logic
grep "ERROR OCCURRED :" trace.log | awk -v "ES=:" -v "SS=java.lang.NullPointerException" '{
if($NF ~... (8 Replies)
Hi,
I have requirement to find the matching patterns of two files in Unix. One file is the log file and the other is the error list file. If any pattern in the log file matches the list of errors in the error list file, then I would need to find the counts of the match.
For example,
... (5 Replies)
Hi,
I have multiple files in my log folder. e.g:
a_m1.log
b_1.log
c_1.log
d_1.log
b_2.log
c_2.log
d_2.log
e_m1.log
a_m2.log
e_m2.log
I need to keep latest 10 instances of each file.
I can write multiple find commands but looking if it is possible in one line.
m file are monthly... (4 Replies)
i have a file where the hostnames and variables are in same line in below format, am able extract some part variables while otherlike subscriptions and handler is missing.
can you please correct me if grep is able to perform this ?
cat /tmp/test
localhost subscriptions='' handler="genie"... (14 Replies)
Discussion started by: rakeshkumar
14 Replies
LEARN ABOUT V7
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; unless the -h flag is used, the file name is shown if there is more than one input file.
Grep patterns are limited regular expressions in the style of ed(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.
-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 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.
-s No output is produced, only status.
-h Do not print filename headers with output lines.
-y Lower case letters in the pattern will also match upper case letters in the input (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.
-x (Exact) only lines matched in their entirety are printed (fgrep only).
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 matches that character.
The character ^ ($) matches the beginning (end) of a line.
A . 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 * (+, ?) matches a sequence of 0 or more (1 or more, 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.
SEE ALSO ed(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
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.
Lines are limited to 256 characters; longer lines are truncated.
GREP(1)