Hi ,
I need some inputs on how to open a file (file.txt) and parse the text example aaa of the file and bbb of the file and add the text zzzz once i parse (aaa and bbb) and followed by the remaining of the text as it is in the file using perl programming.
Thanks in advance (3 Replies)
Hi,
New problem, or challenge as they prefer in the US.
I need to insert some lines in a file before certain other lines.
To make it more clear:
Original file:
aaaa
bbbbb
ccccc
ddddd
bbbbb
fffff
ggggg
Now I want to insert the line "NEW_NEW_NEW" when I match "fffff", but I want... (7 Replies)
I'm a bit new to regex and sed/perl stuff, so I would like to ask for some advice. I have tried several variations of scripts I've found on the net, but can't seem to get them to work out just right.
I have a file with the following information...
# Host 1
host 45583 {
filename... (4 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)
Hello,
I'm new in Shell scripting but i should write a script, which inserts the license header out of a txt-File into the files in our Projekt. For the Java classes it runs without Problems but for XML files not. At xml-files i have to put the license Header after the xml-Header (?xml... (1 Reply)
I have done this sed command to insert one line after a specific string is found:
sed '/patternstring/ a\
new line string' file1
But how do I insert two lines? This is not possible:
sed '/patternstring/ a\
new line string \a
new line string 2' file1 (2 Replies)
I have following pattern in a file:
00:01:38 UTC
abcd
00:01:48 UTC
00:01:58 UTC
efgh
00:02:08 UTC
00:02:18 UTC
and I need to change something like the following
00:01:38 UTC
abcd
00:01:48 UTC
XXXX
00:01:58 UTC
efgh
00:02:08 UTC
XXXX (6 Replies)
By using sed command, How to insert a new line before the last four lines of the file.
Old Line
Old Line
NEW LINE!
Old Line
Old Line
Old Line
Old Line (8 Replies)
Hi!
Considering below text, how would I use sed to insert text right below the v0005-line, using the SEPARATOR-line as a pattern to search for, so two lines above the separator? I can do it right above the separator, but not 2 lines...
# v0004 - Some text
# v0005 - More text
#... (5 Replies)
Hello, I am trying to insert a section of text between lines in another text file.
The new lines to be inserted are:
abcd.efgh.zzzz=blah
abcd.efgh.xxxx=blah
Where N = 0 to 2
Original File:
abcd.efgh.wwxx=aaaaa
abcd.efgh.yyzz=bbbbb
abcd.efgh.wwxx=aaaaa
abcd.efgh.yyzz=bbbbb... (3 Replies)
Discussion started by: tsu3000
3 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)