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 BSD
egrep
GREP(1) General Commands Manual GREP(1)NAME
grep, egrep, fgrep - search a file for a pattern
SYNOPSIS
grep [ option ] ... expression [ file ] ...
egrep [ option ] ... [ expression ] [ file ] ...
fgrep [ option ] ... [ strings ] [ file ]
DESCRIPTION
Commands of the grep family search the input files (standard input default) for lines matching a pattern. Normally, each line found is
copied to the standard output. Grep patterns are limited regular expressions in the style of ex(1); it uses a compact nondeterministic
algorithm. Egrep patterns are full regular expressions; it uses a fast deterministic algorithm that sometimes needs exponential space.
Fgrep patterns are fixed strings; it is fast and compact. The following options are recognized.
-v All lines but those matching are printed.
-x (Exact) only lines matched in their entirety are printed (fgrep only).
-c Only a count of matching lines is printed.
-l The names of files with matching lines are listed (once) separated by newlines.
-n Each line is preceded by its relative line number in the file.
-b Each line is preceded by the block number on which it was found. This is sometimes useful in locating disk block numbers by con-
text.
-i The case of letters is ignored in making comparisons -- that is, upper and lower case are considered identical. This applies to
grep and fgrep only.
-s Silent mode. Nothing is printed (except error messages). This is useful for checking the error status.
-w The expression is searched for as a word (as if surrounded by `<' and `>', see ex(1).) (grep only)
-e expression
Same as a simple expression argument, but useful when the expression begins with a -.
-f file
The regular expression (egrep) or string list (fgrep) is taken from the file.
In all cases the file name is shown if there is more than one input file. Care should be taken when using the characters $ * [ ^ | ( ) and
in the expression as they are also meaningful to the Shell. It is safest to enclose the entire expression argument in single quotes ' '.
Fgrep searches for lines that contain one of the (newline-separated) strings.
Egrep accepts extended regular expressions. In the following description `character' excludes newline:
A followed by a single character other than newline matches that character.
The character ^ matches the beginning of a line.
The character $ matches the end of a line.
A . (period) 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 newline 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 [] then *+? then concatenation then | and newline.
Ideally there should be only one grep, but we don't know a single algorithm that spans a wide enough range of space-time tradeoffs.
SEE ALSO ex(1), sed(1), sh(1)DIAGNOSTICS
Exit status is 0 if any matches are found, 1 if none, 2 for syntax errors or inaccessible files.
BUGS
Lines are limited to 256 characters; longer lines are truncated.
4th Berkeley Distribution April 29, 1985 GREP(1)