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Full Discussion: Insert a line in a text file
Top Forums Shell Programming and Scripting Insert a line in a text file Post 302220559 by bakunin on Friday 1st of August 2008 05:56:16 AM
Old 08-01-2008
Quote:
Originally Posted by 4scriptmoni
I like the sed one more, its just less complicated command.
Good guy! ;-))


Quote:
But both output to the screen I need it to write to that same file.
I tried

[...]

Is that the best way ?
Yes, more or less. sed principally does not overwrite the file it works on, so you have to save its results to a temporary file and copy/move the contents over the original afterwards. You can use "mv" instead of "cp", because you don't need a save copy of the results file, but thats a minor issue:

mv (instead of cp) new.txt servicegroup-24x7-comm.cfg

Quote:
Also I need to pass a variable to that command how do it do??
[...]
that prints $LINEX
The reason is, that sed commands might contain characters which have special meaning to the shell. To prevent the shell from being confused we usually surround all sed programs with single quotes, which do exactly this:

sed 'some_commands' file > file.new

Unfortunately this also prevents the special character "$" to be interpreted: An expression like "$variable" is in fact a command to the shell, saying: replace the string "$variable" with the content of the variable "variable". After preventing this interpretation this mechanism doesn't work any more, which is why you get the result "$LINEX" instead of the content of the variable LINEX. Therefore the solution is to find a way to exclude the variable expression from the single-quoted string:

sed '/alias 24x7-comunicacions/a\'"$LINEX" $FILECFG

I hope this helps.

bakunin
 

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LEARN ABOUT DEBIAN

java2html

JAVA2HTML(1)						      General Commands Manual						      JAVA2HTML(1)

NAME

       java2html - generates highlighted html-files from Java or C++ source

SYNOPSIS

       java2html [options] [filename...]

DESCRIPTION

       This  manual  page  documents  how  to  use java2html.  If no arguments are given on the command line of java2html, it reads from stdin and
       writes to stdout.

       If invoked with filenames as arguments java2html will write it's output into new files. Names of output files  are  generated by  appending
       ".html" to the corresponding input filename.

   Installing as a CGI program
       java2html  can  be  installed as a CGI program and convert source files on the fly. In order to set this up for apache the webmaster has to
       add the two lines

	       AddType text/x-java .java
	       Action text/x-java /cgi-bin/java2html

       to the webserver configuration file.  java2html depends on the webserver properly setting environment variable PATH_TRANSLATED to the path-
       name  of  the  source  file.  If java2html has been compiled with option -DCOMPRESSION=1 then it will invoke gzip to compress the generated
       HTML before sending it to the requesting browser. Of course java2html takes care to check if the browser accepts gzip encoding.

   OPTIONS
       --     Interpret all following arguments on the command line as filenames.  This is useful, if you want to convert files beginning  with  a
	      '-'.

       -b filename
	      Insert the file 'filename' after converted data and before HTML footer. See also the -s option.

       -c     Turns off CGI-script detection and HTTP header generation.  This is needed to use java2html as a subcommand in another CGI script.

       -h filename
	      Insert the file 'filename' after the HTML headers and before the converted data. See also the -s option.

       -i     Generate	an index only. This will generate a list of references (HREF's) to the labels that java2html creates for your source file.
	      The references are created as list items (<li>) in an HTML list. Each line has the form
	      <li><a href="#name">prototype()</a></li>
	      so they can be used directly as an index list, or further parsed by another script.
	      If you want the index at the top of the source file, you will need a wrapper script like this one:

		#! /bin/sh
		echo "Content-type: text/html"
		echo ""
		echo "<html>"
		echo "<head><title>$PATH_TRANSLATED</title>"
		echo "<meta name="generator""
		echo "content="`java2html -V`">"
		echo "</head>"
		echo "<body>"
		echo "<h1>Source of $PATH_TRANSLATED</h1>"
		echo "<ul>Structures and functions"
		cat $PATH_TRANSLATED | java2html -isc
		echo "</ul>"
		echo "<hr></hr>"
		cat $PATH_TRANSLATED | java2html -sc
		echo "</body></html>"
		exit

       -n     Number lines and label them with 'line' followed by the line number. Empty lines get no label, but the linecounter will  count  them
	      nevertheless. With this feature you can refer to special lines of code from other parts of the generated file or from external files
	      with a line like this:

	      <A HREF="foo.java.html#line301">Go to line 301</A>

       -s     With this option you can suppress the generation of HTML headers.  This is especially useful together with options -b  file  and	-h
	      file.

       -t title
	      Set the title to 'title'. The default is the filename you converted or "stdin" if reading from stdin. This option is only used if -s
	      is not set.

       -u     Print usage information.

       -w width
	      sets the WIDTH attribute for HTML tag <PRE>. If this option is not used a default of 80 is assumed.  (Currently  most  browsers  are
	      ignoring this attribute).

       -V     reports the version number of java2html.

EXIT STATUS

       java2html returns 0 on success, 1 if input files are not existing/readable, 2 if output files are not creatable/writable, 3 if invoked with
       illegal options and 4 if gzip cannot be invoked.

AUTHORS

       Florian Schintke <schintke@cs.tu-berlin.de>
       Martin Kammerhofer <mkamm@gmx.net> wrote the CGI feature.
       Rob Ewan <rob@ewan.com> wrote the indexing feature.

SEE ALSO

       c2html(1), pas2html(1), perl2html(1).

																      JAVA2HTML(1)
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