I would like to have the reverse. I would like to keep the newlines and replace any \n in the file with a comma.
xbin told you already (the more important) half of the truth, here is the rest of it:
"\n" has a special meaning to sed, in fact it means "newline character". Whenever you have to deal with a character with a special meaning to sed you can strip it of its special meaning by prepending a "\" to it: "\*" will not mean "zero or more of the previous character" but "literal asterisk". The same is true for "\\", which will mean a literal backslash. This mechanism is called "escaping". Hence:
Dear all
I have a file which looks like this
xxxxxxxxxxxxxx,xxx,xxxxxxxxxx
xxxxxxxxxxxxxx,xxx,xxxxxxxxxx
etc
basically 14 characters then a comma, three characters, then a comma then 10 characters. We are uploading this file to our mainframe and they want the commas removed, so it... (6 Replies)
Here is my problem I'm hoping you guru's can help me figure out. I have a text file that contains comma delimited columns. What I'm looking to do is see if the 24th column on each row in the file contains a value (not null), and then write/append that line to a different file.
I've been... (4 Replies)
Hi,
I have a file called inp.txt
the contents of the file are as follows
MANI123|23|41
MANI123|96|23
I want to reove the first line of this file. How can I do it.
Thanks in advance (5 Replies)
Hi All,
I would like to know how to remove text from a line in a file.
eg
to
The 4 sets of numbers are not static ie they change on each line in each different file so if anyone can help that would be great.
Jeremy (10 Replies)
Hey Folks,
I have a file that contains data that I am working with, sometimes this file has a very long string of text that messes with an awk command in a script i am trying to build. I would like to cut this string of text out of a file and then redirect everything except that string to a new... (5 Replies)
Hi All,
I have some 50,000 HTML files in a directory. The problem is; some HTML files are duplicate versions that is wget crawled them two times and gave them file names by appending 1, 2, 3 etc after each crawl. For example, if the file index.html has been crawled several times, it has been... (1 Reply)
Hi all,
I wrote the following code to remove the value which are 0 in the input file (a columns if numbers).
awk 'BEGIN {
for (i=1; i<=NF; i++)
if ($i)
printf("%13.6e\n",$i)
}' $1 >> $2
The script works if the zeros are written as
0.0000
but not as
0.000000e+00
In... (10 Replies)
Dear community,
maybe I'm asking the moon :rolleyes:, but I'm scratching my head to find a solution for it. :wall:
I have a file called query.out (coming from Oracle query), the file is like this:
ADDR TOTAL
-------------------- ----------
TGROUPAGGR... (16 Replies)
Hi Everybody! First post! Totally noobie.
I'm using the terminal to read a poorly formatted book.
The text file contains, in the middle of paragraphs, hyphenation to split words that are supposed to be on multiple pages. It looks ve -- ry much like this.
I was hoping to use grep -v " -- "... (5 Replies)
Discussion started by: AxeHandle
5 Replies
LEARN ABOUT PLAN9
regexp
REGEXP(6) Games Manual REGEXP(6)NAME
regexp - regular expression notation
DESCRIPTION
A regular expression specifies a set of strings of characters. A member of this set of strings is said to be matched by the regular
expression. In many applications a delimiter character, commonly bounds a regular expression. In the following specification for regular
expressions the word `character' means any character (rune) but newline.
The syntax for a regular expression e0 is
e3: literal | charclass | '.' | '^' | '$' | '(' e0 ')'
e2: e3
| e2 REP
REP: '*' | '+' | '?'
e1: e2
| e1 e2
e0: e1
| e0 '|' e1
A literal is any non-metacharacter, or a metacharacter (one of .*+?[]()|^$), or the delimiter preceded by
A charclass is a nonempty string s bracketed [s] (or [^s]); it matches any character in (or not in) s. A negated character class never
matches newline. A substring a-b, with a and b in ascending order, stands for the inclusive range of characters between a and b. In s,
the metacharacters an initial and the regular expression delimiter must be preceded by a other metacharacters have no special meaning and
may appear unescaped.
A matches any character.
A matches the beginning of a line; matches the end of the line.
The REP operators match zero or more (*), one or more (+), zero or one (?), instances respectively of the preceding regular expression e2.
A concatenated regular expression, e1e2, matches a match to e1 followed by a match to e2.
An alternative regular expression, e0|e1, matches either a match to e0 or a match to e1.
A match to any part of a regular expression extends as far as possible without preventing a match to the remainder of the regular expres-
sion.
SEE ALSO awk(1), ed(1), sam(1), sed(1), regexp(2)REGEXP(6)