Grep command to search a regular expression in a line an only print the string after the match

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Regular expression in grep command

Here is the content of a file: abcdefgh 1234 When I do: grep a?c <file> I expect the output to show "abcdefgh". Its not happening. Any ideas? "a?c" should mean either ac or c. This should mean the first line is a match. Yet its not happening. I have tried with -e option in grep, with...

2. Shell Programming and Scripting

Need to print the next word from the same line based on grep string condtion match.

I need to fetch particular string from log file based on grep condition match. Actual requirement is need to print the next word from the same line based on grep string condtion match. File :Java.lanag.xyz......File copied completed : abc.txt Ouput :abc.txt I have used below...

3. Shell Programming and Scripting

How can awk search a string without using regular expression?

Hello, Awk seem treat the pattern as regular expression, how can awk search not using regular expression? e.g. just represent for "", not "A" or "a" . I don't want to add backslash .

4. Shell Programming and Scripting

search a regular expression and match in two (or more files) using bash

Dear all, I have a specific problem that I don't quite understand how to solve. I have two files, both of the same format: XXXXXX_FIND1 bla bla bla bla bla bla bla bla bla bla bla bla ======== (return) XXXXXX_FIND2 bla bla bla bla bla bla

5. Shell Programming and Scripting

Grep regular expression to get part of a line

Hi I just started on GNU Grep with regex and am finding it very challenging and need to ask for help already... here is the problem, I have a page (MYFILE) which consists of the following.... <div> <input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" /> <input type="hidden"...

6. Shell Programming and Scripting

Regular Expression doesn't match dot "." in a string

hello, I am writting a regular expression that intend to match any tunnel or serial interface but it doesn't mtach any serial sub-interface. For example, statement should match "Tunnel3" or "Serial0/1" but shouldn't match "Serial0\1.1" (doesn't include dot ".") I tried the following but...

7. Shell Programming and Scripting

exact string match ; search and print match

I am trying to match a pattern exactly in a shell script. I have tried two methods awk '/\<mpath${CURR_MP}\>/{print $1 $2}' multipath perl -ne '/\bmpath${CURR_MP}\b/ and print' /var/tmp/multipath Both these methods require that I use the escape character. I am guessing that is why...

8. Shell Programming and Scripting

regular expression format string in one line.

Hi All, @months = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec); $day=091023; $day_combine = $day; $day_combine =~ s/({2})({2})({2})/20$1-$months-$3/; Instead of three lines, is possible to combine the last two lines into a single line? means no need assign $day to $day_combine...

9. Shell Programming and Scripting

Regular expression in grep -E | awk print

Hi All, I have file.txt with contents like this: random text To: recipient@email.co.uk <HTML>S7randomtext more random text random text To: recip@smtpemail.com <HTML>E5randomtext more random text random text I need the output to look like this: 1,,,1,S7 1,,,1,E5 My code so...

10. UNIX for Dummies Questions & Answers

Regular Expression - match 'b' that follows 'a' and is at the end of a string

Hi, I'm struggling with a regex that would match a 'b' that follows an 'a' and is at the end of a string of non-white characters. For example: Line 1: aba abab b abb aab bab baa I can find the right strings but I'm lacking knowledge of how to "discard" the bits that precede bs....

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)

Shell Programming and Scripting