by default the "." does not match a new line, you can extend it to match across lines (ie, match newlines) with the s modifier. See code sample for practical examole of what I'm trying to say
As you can see the s modifier extended the characters matched by .* across multiple lines within the string
Hello all,
I have a script that has an infile with system package information. For the most part the script is looking well. The only thing i need help is in testing for null entries and removing null data.
#!/usr/bin/ksh
for i in `cat /mwncps/bin/eco_pack`
do
NAME=`pkginfo -l |... (2 Replies)
Hi,
In the code below, the $DD1, $DD2, $MM1, $MM2 are not fetching the values. Can anybody tell me where have i made wrong.
Shift_date.sh is a script which gives the previous date if we give the current date in the format YYYYMMDD and +/- how many days past/future.. Like Shift_date.sh... (3 Replies)
Hi,
I want to remove spaces from data.
Data is:
1,aa ,21, 22
2,a a ,23 ,24
3, ,25 ,26
output should be:
1,aa,21,22
2,a a,23,24
3, ,25,26
i.e
i have to remove leading and trailing spaces.Not the space between data and also i dont want to remove the space if data is... (4 Replies)
Hi i have wriiten a script which fetches the data from text file, and saves in the output in a text file itself, but i want that the output should save in different columns.
I have the output like:
For Channel:response_time__24.txt
1547 data points
0.339
0.299
0.448
0.581
7.380
... (1 Reply)
hi-I want to write a UNIX Script which will fetch records from Oracle database.I want to store these records in a file under fields like email address,name and the transaction_id and then fetch these records from the file and send the email to individual users with their transaction ID details. (4 Replies)
Hi all,
I have the following script, but are not too sure about the syntax to complete the script.
In essence, the script must connect to a SFTP server at a client site with username and password located in a file on my server.
Then change to the appropriate directory.
Pull the data to the... (1 Reply)
I have the following:
HH:MM:SS
I want to use either % or # sign to remove :SS can somebody please provide me an example. I know how to do this in awk, but awk is too much
overhead for something this simple since I will be doing this in a loop a lot of times.
Thanks in advance to all... (2 Replies)
Hi,
I have a file which consists of two columns but the first one can be varying in length like
123456789 0abcd
123456789 0abcd
4015 0 0abcd
5000 0abcd
I want to go through the file reading each line, count the number of characters in the first column and delete... (2 Replies)
Hi Friends,
I have a file1 as below
file1.txt
100000.||1925-01-10|00:00|1862SHERMA NAVE#1SE.||EVTON|IL|60201||22509.|BDSS|62007|2639.|26670
100001.||1935-01-10|00:00|1862NEW . YRK NO.||EVTON|IL|60201||22509.|BDSS|62007|2639.|26670.
100002.||1965-01-10|00:00|1862 IND . INC,CL... (6 Replies)
We have the data looks like below in a log file.
I want to generat files based on the string between two hash(#) symbol like below
Source:
#ext1#test1.tale2 drop
#ext1#test11.tale21 drop
#ext1#test123.tale21 drop
#ext2#test1.tale21 drop
#ext2#test12.tale21 drop
#ext3#test11.tale21 drop... (5 Replies)
Discussion started by: Sanjeev G
5 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)