overwrite specific lines in a file

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Overwrite specific column in xml file with the specific column from adjacent line

I have an xml file dumped from rrd file, that I want to "patch" so the xml file doesn't contain any blank hole in the resulting graph of the rrd file. Here is the file.  <row><v> 4.0419731265e+07 </v><v> 4.5045912770e+06...

2. UNIX for Dummies Questions & Answers

Add strings from one file at the end of specific lines in text file

Hello All, this is my first post so I don't know if I am doing this right. I would like to append entries from a series of strings (contained in a text file) consecutively at the end of specifically labeled lines in another file. As an example: - the file that contains the values to be...

3. UNIX for Dummies Questions & Answers

Quick UNIX command to display specific lines in the middle of a file from/to specific word

This could be a really dummy question. I have a log text file. What unix command to extract line from specific string to another specific string. Is it something similar to?: more +/"string" file_name Thanks

4. Shell Programming and Scripting

awk search/replace specific field, using variables for regexp & subsitution then overwrite file

Hello, I'm trying the solve the following problem. I have a file which I intend to use as a csv called master.csv The columns are separated by commas. I want to change the text on a specific row in either column 3,4,5 or 6 from xxx to yyy depending upon if column 1 matches a specified pattern....

5. Shell Programming and Scripting

Extracting specific lines of data from a file and related lines of data based on a grep value range?

Hi, I have one file, say file 1, that has data like below where 19900107 is the date, 19900107 12 144 129 0.7380047 19900108 12 168 129 0.3149017 19900109 12 192 129 3.2766666E-02 ...

6. Shell Programming and Scripting

Substitute specific lines with lines from another file

Hello All, I am new to this forum. I am currently facing a problem in manipulating files. I have two files called old-matter and new-matter # cat old-matter abc: this, is a, sample, entry byi: white board, is white in color rtz: black, board is black qty: i tried, a lot asd: no...

7. UNIX Desktop Questions & Answers

shell overwrite lines in a file

Hello, I have an external file (file.txt). This shall be a kind of a config file for my shell script. I get the line numbers as to a corresponding entry by grep. Now I would like to substitute the corresponding line from the shell script back to the file and exactly on the same line number. ...

8. UNIX for Dummies Questions & Answers

how to display specific lines of a specific file

are there any basic commands that can display lines 99 - 101 of the /etc/passwd file? I'm thinking use of head and tail, but I forget what numbers to use and where to put /etc/passwd in the command.

9. Shell Programming and Scripting

remove specific lines from a file

Hi there I have a file with a variable amount of rows but the 45th, 46th and 47th charachter of each line is the status field which is a three digit code ie 001, 002, 003 etc. My question is this..I need to strip all the records/lines with 002's out of the file completely and put them into...

10. UNIX for Dummies Questions & Answers

How do you specific lines in a file?

I'm looking to show specific lines (eg. 20 through 40) of a series of files in the directory. How do I do this?

LEARN ABOUT OPENSOLARIS

fmt

fmt(1)								   User Commands							    fmt(1)

NAME

       fmt - simple text formatters

SYNOPSIS

       fmt [-cs] [-w width | -width] [inputfile]...

DESCRIPTION

       fmt  is a simple text formatter that fills and joins lines  to produce output lines of (up to) the number of characters specified in the -w
       width option. The default  width is 72. fmt concatenates the inputfiles listed as arguments. If none are given, fmt formats text  from  the
       standard input.

       Blank lines are preserved in the output, as is the spacing between words. fmt does not fill nor split lines beginning with a `.' (dot), for
       compatibility with nroff(1). Nor does it fill or split a set of contiguous non-blank lines which is determined to be  a	mail  header,  the
       first line of which must begin with "From".

       Indentation is preserved in the output, and input lines with differing indentation are not joined (unless -c is used).

       fmt can also be used as an in-line text filter for vi(1). The  vi command:

       !}fmt

       reformats the text between the cursor location and the end of the paragraph.

OPTIONS

       -c		    Crown  margin  mode.  Preserve the indentation of the first two lines within a paragraph, and align the left margin of
			    each subsequent line with that of the second line. This is useful for tagged paragraphs.

       -s		    Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such for-
			    matted text, from being unduly combined.

       -w width | -width    Fill output lines to up to	width columns.

OPERANDS

       inputfile    Input file.

ENVIRONMENT VARIABLES

       See environ(5) for a description of the LC_CTYPE environment variable that affects the execution of fmt.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       nroff(1), vi(1), attributes(5), environ(5)

NOTES

       The -width option is acceptable for BSD compatibility, but it may go away in future releases.

SunOS 5.11							    9 May 1997								    fmt(1)

Shell Programming and Scripting