On Unix, it is easy to get those lines that match a pattern, by
Code:
grep pattern file
or those lines that do not, by
Code:
grep -v pattern file
but I am editing a file on Windows with Ultraedit.
Ultraedit support regular expression based search and replace.
I can delete all the lines that match a pattern, by
Code:
s/^.*pattern.*$//
but how can I delete all the lines that do not match this pattern?
look ahead assertion may be an option, but it is not surpported in Ultraedit,
can any body help me with this?
Hi all,
I have the following data in a file x.csv:
> ,this is some text here
> ,,,,,,,,,,,,,,,,2006/11/16,0.23
> ,,,,,,,,,,,,,,,,2006/12/16,0.88
< ,,,,,,,,,,,,,,,,this shouldnt be deleted
I need to use SED to match anything with a > in the line and delete that line, can someone help... (7 Replies)
hi,
i am parsing a file, in that searching for lines those contains "$threadNo.Received message:" , if that line contains the required fields write them into a separate file other wise ignore them.
i am using the following code,but it is printing all the lines , i dont want to rpint , please help... (3 Replies)
First of all, I know this can be more eassily done with perl or other scripting languages but, that's not the issue. I need this in sed. (or wander if it's possible )
I got a file (trace file to recreate the control file from oracle for the dba boys)
which contains
some lines
another line... (11 Replies)
I have this input file that I need to remove lines which represents more than 30 days of processing.
Input file:
On 11/17/2009 at 12:30:00, Program started processing...argc=7
Total number of bytes in file being processed is 390
Message buffer of length=390 was allocated successfully... (1 Reply)
Hello sed gurus. I am using ksh on Sun and have a file created by concatenating several other files. All files contain header rows. I just need to keep the first occurrence and remove all other header rows.
header for file
1111
2222
3333
header for file
1111
2222
3333
header for file... (8 Replies)
Hi
Im trying to do the following in sed. I want to delete any blank line at the start of a file until it matches a pattern and then stops. for example:
Input
output:
I have got it to work within a range of two patterns with the following:
sed '/1/,/pattern/{/^]*$/d}'
The... (2 Replies)
BASH in Solaris 10
I have a log file like below. Whenever the pattern ORA-39083 is encountered, I want to delete the line which has this pattern and 3 lines below it.
$ cat someLogfile.txt
ORA-39083: Object type OBJECT_GRANT failed to create with error:
ORA-01917: user or role 'CMPA' does... (4 Replies)
Hello Experts , require help . See below output:
File inputs
------------------------------------------
Server Host = mike
id rl images allocated last updated density
vimages expiration last read <------- STATUS ------->... (4 Replies)
I have a file
Line 1 a
Line 22
Line 33
Line 1 b
Line 22
Line 1 c
Line 4
Line 5
I want to delete all lines before last occurrence of a line which contains something which is defined in a variable. Say a variable var contains 'Line 1', then I need the following in the output.
... (21 Replies)
Discussion started by: Soham
21 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). 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.
-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.
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 '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)