01-25-2011
It is always helpful to know what system you're on, so getting in the habit of posting it would be good so we don't have to ask...
![Wink Smilie](https://www.unix.com/images/smilies/wink.gif)
grep -m makes starting at a certain point easy but AIX and Solaris may not have it.
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1. UNIX for Dummies Questions & Answers
I need to extract a particular block from a file whose locations are not known but the only identity is a word. For example
in a file I have
ABC
asdklf
asdfk
FGH
dfdfg
asdlfk
asdfl
...
JHK (5 Replies)
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2. Programming
needa c program to extract text between two delimiters from some text file.
and then storing them in to diffrent variables ?
text file like 0:
abc.txt
=========
aaaaaa|11111111|sssssssssss|333333|ddddddddd|34343454564|asass
aaaaaa|11111111|sssssssssss|333333|ddddddddd|34343454564|asass... (7 Replies)
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3. Shell Programming and Scripting
I executed a following sed command
=> echo "a/b/c/d/e/f/g/h" | sed 's/\/*$//g'
a/b/c/d/e/f/g
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4. Shell Programming and Scripting
Hi , this is my first enty in our forum.
Problem scenario:
Using informatica tool am loding records from source DB to target DB. While loading some records getting rejected due to some reason. Informatica will capture those rejected records in session log file.now the session log ll be... (2 Replies)
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5. Shell Programming and Scripting
Hi all,
my problem is extract a value from a text, i mean, I have this text:
> ala
Nr of active alarms are: 16
================================================================================================
Sever Specific Problem Cause Mo-Reference... (15 Replies)
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6. Shell Programming and Scripting
Hi,
There's an xml file produced from a front-end tool as shown below:
<INPUT DATABASE ="ORACLE" DBNAME ="UNIX" NAME ="FACT_TABLE" OWNERNAME ="DIPS">
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Hi,
I have some CVS log files, which are divided into blocks. Each block has many fields of information and I want to extract those blocks with a pattern. Here is the sample input.
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I have siebel log file as following
EventContext .......
123
.......
SELECT
...
..
EventConext <---- Question 1 , I should get this line
345
......
SELECT <----- Question 2 , print this line
Test..... <----- Question 2 , print this line
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Hei buddies,
Need ur help once again.
I have a file which has bunch of lines which starts from a fixed pattern and ends with another fixed pattern.
I want to make use of these fixed starting and ending patterns to select the bunch, one at a time.
The input file is as follows.
Hi welcome... (12 Replies)
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Hello all,
I am working on a script which should parse a large file called input.txt which contains table definitions, index definitions and comments like these ones:
------------------------------------------------
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LEARN ABOUT DEBIAN
plan9-grep
GREP(1) General Commands Manual GREP(1)
NAME
grep, g - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
g [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines that match the pattern, a regular expression as defined in regexp(7) with
the addition of a newline character as an alternative (substitute for |) with lowest precedence. Normally, each line matching the pattern
is `selected', and each selected line is copied to the standard output. The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-e The following argument is taken as a pattern. This option makes it easy to specify patterns that might confuse argument parsing,
such as -n.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
-f The pattern argument is the name of a file containing regular expressions one per line.
-b Don't buffer the output: write each output line as soon as it is discovered.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'. An expression starting with '*' will treat the rest of the expression as literal characters.
G invokes grep with -n and forces tagging of output lines by file name. If no files are listed, it searches all files matching
*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms
SOURCE
/src/cmd/grep
/bin/g
SEE ALSO
ed(1), awk(1), sed(1), sam(1), regexp(7)
DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)