What my puzzle file!, How to remove special characters ?? Post: 302790197

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Top Forums UNIX for Advanced & Expert Users What my puzzle file!, How to remove special characters ?? Post 302790197 by bakunin on Friday 5th of April 2013 01:47:51 AM

04-05-2013

Registered User

Quote:

Originally Posted by arm_naja

-- After remove it by vi (I press x for 3 times because it have 3 char right?) --

Code:

root@MyHost /tmp> wc puzzle.txt
       1       0       1 puzzle.txt
root@MyHost /tmp> cat -v puzzle.txt

root@MyHost /tmp> ls -l puzzle.txt
-rw-r--r--    1 root     system            1 Mar 28 10:55 puzzle.txt
root@MyHost /tmp>

How I remove special chars???

The short answer is: you can't The single char "ls" shows is the End-of-File-character (literally a "^D") and it isn't possible with "vi" to delete it. In fact "vi" will even append such a EOF char to a file if it was missing.

Generate a file with "touch", it will have 0 characters. Now open this in "vi", write some text, delete it completely (this way "vi" thinks you have changed the file, do NOT use the undo-function) and save the file. You will notice that it has also 1 character in it - the EOF char.

I hope this helps.

bakunin

bakunin

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LEARN ABOUT DEBIAN

tree-puzzle

TREE-PUZZLE(1)						      General Commands Manual						    TREE-PUZZLE(1)

NAME

       tree-puzzle - Reconstruction of phylogenetic trees by maximum likelihood

SYNOPSIS

       tree-puzzle

DESCRIPTION

       This manual page documents briefly the tree-puzzle command.  This manual page was written for the Debian GNU/Linux distribution because the
       original program does not have a manual page.

       TREE-PUZZLE is the new name for the program previously known as PUZZLE!

       tree-puzzle is an interactive console program that implements a fast tree search algorithm, quartet puzzling, that allows analysis of large
       data  sets  and automatically assigns estimations of support to each internal branch. TREE-PUZZLE also computes pairwise maximum likelihood
       distances as well as branch lengths for user specified trees. Branch lengths can also be calculated under the  clock-assumption.  In  addi-
       tion, TREE-PUZZLE offers a novel method, likelihood mapping, to investigate the support of a hypothesized internal branch without computing
       an overall tree and to visualize the phylogenetic content of a sequence alignment.

       There is also a paralellized version tree-ppuzzle available.

OPTIONS

       There are no options. For usage please look at /usr/share/doc/tree-puzzle/tree-puzzle.pdf.

SEE ALSO

       phylip(1), treetool(1).	tree-ppuzzle(1).

       This manual page was written by Dr. Guenter Bechly <gbechly@debian.org>, for the Debian GNU/Linux system (but may be used by others).

								  April 20, 2001						    TREE-PUZZLE(1)