Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Problem with cat
Top Forums Shell Programming and Scripting Problem with cat Post 302566470 by Corona688 on Thursday 20th of October 2011 11:58:10 AM
Old 10-20-2011
That's a useless use of cat. wc -w < filename

cat means what it says: That file doesn't exist yet. It doesn't exist until you run something which creates it, like your tee does.

You don't need to redirect into a file then count words in a file to find out how many arguments you have. That can easily give a wrong answer when arguments contain spaces. There's built-in variables for "all arguments" and "number of arguments".

Your entire program for the specification you gave would be:

Code:
echo "arguments: $*"
echo "Number of arguments:  $#"

Last edited by Corona688; 10-20-2011 at 01:06 PM..
This User Gave Thanks to Corona688 For This Post:
linuxn00b
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Problem with cat

On Solaris 5.8 in ksh, I have a sample.txt with contents A 105 305 B 205 405 C 100 198 ....................... when I do a cat sample.txt the O/P is exactly as above but when I do a echo `cat sample.txt` the O/P changes to A 105 305 B 205 405 C 100 198........... Everything is... (3 Replies)
Discussion started by: macrulez
3 Replies

2. Shell Programming and Scripting

cat file problem

Hi, I wnat to read a fiel line by line and store each line in a variabel, so I made a for loop: for i in `cat file` ; do #do sth. done; The problem is, that in the file, there are lines with only asterisks like this... (3 Replies)
Discussion started by: bensky
3 Replies

3. Shell Programming and Scripting

cat problem

Hello again; I have a file in this format ./this is/first/1 ./this is/second/2 ./this is/third/3 and i am using this file in a for loop with cat command like this for i in `cat directory.txt` do .......... done Bu there is a problem because my directory is "this is" but... (7 Replies)
Discussion started by: redbeard_06
7 Replies

4. UNIX for Advanced & Expert Users

Problem with cat with PERL Substitute

system("cat FILENAME | perl -e 'while(<>) { print $_;}'"); system("cat FILENAME | perl -e 'while(<>) { $_ =~ s/XXX/YYY/g; print $_;}'"); First command works fine but second command gives the following error: syntax error at -e line 1, near "{ =~" syntax error at -e line 1, near ";}"... (2 Replies)
Discussion started by: jingi1234
2 Replies

5. UNIX for Dummies Questions & Answers

Difference between cat , cat > , cat >> and touch !!!

Hi Can anybody tell the difference between Difference between cat , cat > , cat >> and touch command in UNIX? Thanks (6 Replies)
Discussion started by: skyineyes
6 Replies

6. UNIX for Dummies Questions & Answers

Help me with a little problem with command cat

Hi I am having a little trouble understanding how to use this cat command. My question is the following: write a command to create a file called catFiles that contains three copies of the file catFile. If you can help me to understand how to create this, I would be very greatful. Thanks... (2 Replies)
Discussion started by: rushhour
2 Replies

7. Shell Programming and Scripting

Formatting problem with cat, egrep and perl

Hi guys I'm using the following script to change input file format to another format. some where I'm getting the error. Could you please let me know if you find out? cat input.txt|egrep -v ‘^#'|\ perl -ane ‘if (@F>3){$_=~/(chr.+):(\d+)\ s()/;print $1,”\t”,$2,”\t”,($2+35),”\n”}'\ > output.bed ... (1 Reply)
Discussion started by: repinementer
1 Replies

8. Shell Programming and Scripting

problem using CAT command in PERL

Hi All, I was trying to run the cat command using perl SCRIPT for my daily reports. However cat command is not working in PERL. please help me. cat FILE1.txt |cut -d "|" -f1 >INPUT1.txt cat FILE2.txt|wc -l *9111*|>INPUT2.txt paste INPUT1,INPUT2 >OUTPUT.txt Thanks in advance ... (3 Replies)
Discussion started by: adaleru
3 Replies

9. Shell Programming and Scripting

Problem with cat

I am trying to use the following code: cat *.txt > OutPutFile.txt Using files with a expression in one single line that always end with " ; " something like this: Block1.txt Block2.txt Block3.txt The expected result should be something like this: OutPutFile.txt: My code works OK in this... (4 Replies)
Discussion started by: Xterra
4 Replies

10. Shell Programming and Scripting

Problem with egrep and cat

Hello, I want to find some keywords in a dd image. I have created a keyword file (1.txt) and search the dd image using, cat /media/sdb1/test/c.dd.001 | strings | egrep -i --color -f 1.txt It works, But how can I get the file name and path? Many thanks. (7 Replies)
Discussion started by: yzy9951
7 Replies

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)
All times are GMT -4. The time now is 08:36 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy