* will match any number of the preceding character. Also it's good to match a space after the last value so that you don't find Apr 22 when you are actually searching for Apr 2, for example.
Hi,
i have a script that stores the date in a variable as follows:
DATESTAMP=`date +"%m%d%Y"`
I also have another file called HOLIDAYFILE which stores all of our holidays as follows:
01/01/2007
07/04/2007
What i need to do is use the grep statement in my script to see if DATESTAMP... (2 Replies)
i have a process ruuning
root 843786 835648 0 Nov 10 - 0:31 java
root 860340 1 0 Nov 11 - 0:31
then how to grep this using date above
i have written a script
----------------------------
#!/bin/ksh
a=`date +"%m-%d"`
ps | grep root | grep "$a" >> file1... (8 Replies)
Hi,
I have a file which is a result of a script running every two minutes. What I wanted to do is to grep a specific date and time (hour and minute) from the file and then count the occurance of 201. I need to get the result of occurance of 201 every 5 minutes. What should I include in my... (8 Replies)
Hi guys,
I need to find tomorrows date in date fomat and should be in variable.
as I need to grep this date in a flat file
ie. if today's date is '09 JAN 2009'
output should be '10 JAN 2009'
unix/perl script will be fine. (21 Replies)
Hi,
can you correct the below syntax for me?
echo `grep "Issue" new`date +'%y%m%d'`.csv`
I am not able to execute above.
PS: "Issue" is a keyword I am seraching in a new<date>.csv
I am going to use above in i statement as below:
if
then
do this
else
do that (2 Replies)
Hi,
I would greatly appreciate it if someone can help me with my problem.
I have a crawler which collects spam URLs everyday & this data needs to be published in a blacklist.
Here's the catch:
The "Time To Live" (TTL) for each URL is 3 months (or whatever for that matter). If i see the... (5 Replies)
I have few files in one directory as below and I require the files that were created today...
$ls -ltr
-rw-r--r-- 1 abc abc 0 Dec 5 17:34 file4.txt
-rw-r--r-- 1 abc abc 0 Dec 5 17:34 file5.txt
-rw-r--r-- 1 abc abc 0 Dec 7 17:34 file6.txt
-rw-r--r-- 1... (7 Replies)
I'm using the below to grep two strings from my log file.
grep "09:49.*yellow" out.logNow, i wish to search for all times within 3 minutes of the greped time i.e
All time starting from 09:49:00 to 09:51:00.
Currently it searches only for 09:49:* and also searches incorrect entry like... (14 Replies)
Discussion started by: mohtashims
14 Replies
LEARN ABOUT ULTRIX
grep
grep(1) General Commands Manual grep(1)Name
grep, egrep, fgrep - search file for regular expression
Syntax
grep [option...] expression [file...]
egrep [option...] [expression] [file...]
fgrep [option...] [strings] [file]
Description
Commands of the family search the input files (standard input default) for lines matching a pattern. Normally, each line found is copied
to the standard output.
The command patterns are limited regular expressions in the style of which uses a compact nondeterministic algorithm. The command patterns
are full regular expressions. The command uses a fast deterministic algorithm that sometimes needs exponential space. The command pat-
terns are fixed strings. The command is fast and compact.
In all cases the file name is shown if there is more than one input file. Take care when using the characters $ * [ ^ | ( ) and in the
expression because they are also meaningful to the Shell. It is safest to enclose the entire expression argument in single quotes ' '.
The command searches for lines that contain one of the (new line-separated) strings.
The command accepts extended regular expressions. In the following description `character' excludes new line:
A followed by a single character other than new line matches that character.
The character ^ matches the beginning of a line.
The character $ matches the end of a line.
A . (dot) 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 new line 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 the following: [], then *+?, then concatenation, then | and new
line.
Options-b Precedes each output line with its block number. This is sometimes useful in locating disk block numbers by context.
-c Produces count of matching lines only.
-e expression
Uses next argument as expression that begins with a minus (-).
-f file Takes regular expression (egrep) or string list (fgrep) from file.
-i Considers upper and lowercase letter identical in making comparisons and only).
-l Lists files with matching lines only once, separated by a new line.
-n Precedes each matching line with its line number.
-s Silent mode and nothing is printed (except error messages). This is useful for checking the error status (see DIAGNOSTICS).
-v Displays all lines that do not match specified expression.
-w Searches for an expression as for a word (as if surrounded by `<' and `>'). For further information, see only.
-x Prints exact lines matched in their entirety only).
Restrictions
Lines are limited to 256 characters; longer lines are truncated.
Diagnostics
Exit status is 0 if any matches are found, 1 if none, 2 for syntax errors or inaccessible files.
See Alsoex(1), sed(1), sh(1)grep(1)