after getting the 3 character from the beginning [ ........\(.\)........]
what does the last expression .* does here..
the first 2 characters are specified as ^..
the third character is mentioned as \(.\)
and the remaining characters starting from 4th character to till the end of the string is blocked by .*
Hi,
I would like extract from a file a character or pattern after ( n + 1) a specific pattern (n) . ( i supposed with awk)
how could i do ?
Thanks in advance. (1 Reply)
Hi All,
Below is the sample data of my files:
O|A|571000689|D|S|PNH|S|SI
sadm|ibscml1x|
I|A|571000689|P|S|PNH|S|SI
sadm|ibscml1x|
O|A|571000689|V|S|PNH|S|SI
sadm|ibscml1x|
S|C|CAM|D|S|PNH|R|ZOA|2004
bscml1x| ... (3 Replies)
ps -eaf | grep “oracleTRLV (LOCAL=NO)” | while read ora_proc
do
echo $ora_proc
done
I would like to modify the above shell so that if character 13 and 14 equal "12" to do something.
Sorry I'm new to shell:( (14 Replies)
hi ,
i am having a file
Full_ARTMAS_20110510152425.xml in my local directory. i wanted to extract the character at the 35143546 th position at line 1 of this file.Can any body help me how to do it???
regards
Anjali (2 Replies)
Greetings.
I need to extract text between two character positions, e.g: all text between character 4921 and 6534.
The text blocks are FASTA-format sequence of whole chromosomes, so basically a million A, T, G, C, combinations. E.g:
>Chr_1
ACCTGTTCAACTCTCAGGACTCTCAGGTCAACTCTCAG... (3 Replies)
Hi,
I need to extract the first character of second column of my file. If the condition matches, then I need to print the 2nd and 3rd column as my output
I tried below mentioned query but it was not working
awk -F'|' '$2~/^5/' Sgn_group.txt
File Name : Sgn_group.txt
country... (2 Replies)
Dear folks
Hello
I have a data set which one of the column of this data set are string and I want to extract numbers which is between two ":". However, I know the substr command which will do this operation but my problem is the numbers between two ":" have different digits. this will make my... (11 Replies)
Hello,
I have a file of strings a below:-
4358RYFHD9845
28/COC/UYF984
9834URD 98HJDU
I need to extract all the first numeric character of every sting as follows:-
4358
28
9834
thanks to suggest ASAP
Regards,
Jasi
Use code tags, thanks. (7 Replies)
Hi, I have a file consist of 25000 lines and each line has 2 columns 1 column with 6 numeric characters and 2nd one with 45000 numeric characters (not delimited). I want to take every 7th character form the 2nd column, keeping the first column. I made it in several steps but it run for 7 hours to... (7 Replies)
Discussion started by: SANDO
7 Replies
LEARN ABOUT ULTRIX
egrep
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)