I'd like to grep a pattern of a version number as
*_number.number.number
number should be digit
my grep is
|egrep '^*++\.+'
It works for V_3.2.1 or V _5.3.2 but not with V_43.6.543 !!!!!
How can I specify any repetition of digit in the ?
thanks, (4 Replies)
Hi All,
I am using egrep command to search one pattern. Following is the command i am using
egrep -i "ACL*" filename
but its also giving me the records which do not contain ACL.
any help would be appreciated.
Regards,
Sam (3 Replies)
Hi All,
I am having a query regarding the usage of egrep command.
i am having two unix environmanets in environment when i am using
"egrep -f" it is working fine and other unix environment i am getting a syntax error.
Please let me know if i need to set any environmane variables.
... (12 Replies)
Hello,
I could not find the exactly same post here.. so I will explain what I did to get the last month using date command.
I used
date +%Y-%m -d "-1 months"
to get the last month. However, the returned value of above command on 2009/10/31 was 2009 10 and not 2009 09.. and the... (9 Replies)
Hi, I'm new to these forums, and I'm hoping that someone can solve this problem...
To make things short:
I have DD-wrt set up on a router.
I'm trying to run a script in CRON that fetches the daily password from my database using SSH.
CRON is set like so(in web interface):
* * * *... (4 Replies)
Hi All,
Here is my question.
I have two files, file1.txt and file2.txt. I need the line number (index number) of file2.txt where the words in file1.txt appear. But they have to be in the same order as file1.txt. In example,
file1.txt
Z
K
A
...
T
file2.txt
W
A
Q
R (6 Replies)
cat /tmp/inventory.csv|grep AARP|egrep -v "T11|12.4\(7\)"
how do i exclude in addition to above 12.4\(3\)
I have tried adding this in i.e
-v "T11|12.4\(7\)|12.4\(3\)"
but it did not work (3 Replies)
Hello folks,
Here's how my current egrep command works:
egrep "NY|DC|LA|VA|MD" state_data.txt
I am planning to use a file to enter all allowable state values like say a new state_names.lookup with the following data:
NY
DC
LA
VA
MD
egrep "`cat state_names.lookup`"... (6 Replies)
Hi Guys,
I need hepl on egrep commnad
I have one file and i need grep only specific lines..
EX:
2012-04-01 02:15:14 w
2012-04-01 02:15:14 w
2012-04-01 02:15:14 w
2012-10-26 02:15:14 w
2012-04-01 02:15:14 w
2012-10-26 02:15:14 w
2012-10-26 02:15:14 w
2012-10-26 03:18:56 M... (1 Reply)
my file is below
REREGISTER is something to Failed to create the request
Failed to create the request in not easy
I know how REREGISTERcommand i run is
egrep 'REREGISTER|Failed|to|create|the|request' test1
expected output
REREGISTER is something to Failed to create the request
i should... (2 Replies)
Discussion started by: mirwasim
2 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)