Hi
I am trying to retreive the line containing the pattern from a file and 21 lines right after this number by running the following awk command:
$ awk '/940/{c=21;next}c&&c--' allocations.ini and getting the following
syntax error:
$ awk '/940/{c=21;next}c&&c--' allocations.ini
awk: syntax error near line 1
awk: bailing out near line 1
$
any idea? Thanks -A
also if you need to include the line containing a pattern:
Greetings All!!
I have a very peculiar problem where I have to parse a big text file and extract useful data out of it with starting and ending block pattern matching.
e.g. I have a input file like this:
sample data
block1
sample data
start
useful data
end
sample data
block2
sample... (5 Replies)
Hi,
I want to extract block of data from flat file.
the data will be like this
start of log
One
two
three
end of log
i want all data between start of log to end of log i.e One
two
three to be copied to another file.
This particular block may appear multiple times in same file. I... (4 Replies)
Hi
I have a text file which has two sets of lines repeating for "n" number of times.Some data is printed between the two lines.I want to retrieve all the data thats there in between those two set of lines.I have the string value of those two set of lines.
To be much more clearer
... (4 Replies)
Hi
I have a several thousands lines text file. Is there any command(s), which would allow me to retreive a block of data between two specified lines of this file?
Thanks a lot -A (2 Replies)
Hi All,
Currently i have to write a script.
For which i need to cut a block from .txt file.
I know the specific word that starts the block and ends the block.
Can we do it in shell scripting..?
Please suggest.... (6 Replies)
Hi All,
I am writing a block driver for a 2GB SD card where i get the total amount of data per request as follows:
struct request *req;
uint card_addr,total_bytes;
struct request_queue *rq = BlkDev->queue;
req = elv_next_request(rq);
..
..
card_addr = req->sector*512;... (1 Reply)
Ladles and Jellyspoons,I am trying to use, unsucessfully I might add, awk to strip a large block of information from and audit output.The format resembles the following:-----------------------------------------------------------Event: execveTime: ... (3 Replies)
Hi all
I have following part of a big file
TTDS00002 Synonyms M1 receptor
TTDS00002 Disease Alzheimer's disease
TTDS00002 Disease Bronchospasm (histamine induced)
TTDS00002 Disease Cognitive deficits
TTDS00002 Disease Schizophrenia
TTDS00002 Function The muscarinic acetylcholine... (2 Replies)
I need to send email to receipient in each block of data in a file which has the sender address under TO and just send that block of data where it ends as COMPANY.
I tried to work this out by getting line numbers of the string HELLO but unable to grab the next block of data to send the next... (5 Replies)
Discussion started by: loggedout
5 Replies
LEARN ABOUT ULTRIX
fgrep
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)