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Full Discussion: sed script to generate hyperlinks refuses to work
Top Forums Shell Programming and Scripting sed script to generate hyperlinks refuses to work Post 302258048 by markfgilliland on Thursday 13th of November 2008 06:02:00 PM
Old 11-13-2008
sed script to generate hyperlinks refuses to work
Hi All,

I'm new to the forum and not a programmer, but I'm writing a bash script to preprocess definitions of technical terms by inserting hyperlinks pointing to other pages in the glossary before the pages are posted to our server, using a standard naming convention for the pages. The script searches through a set of text (all the definitions) and insert hyperlinks when it finds specific terms (the terms). The script also generates a cleaned-up version of the terms for the hyperlink, getting rid of uppercase, non-valid characters for filenames, etc. So the idea is to replace the term in the original file by the term plus a hyperlink to the page for that term.

The individual comands used to work (I swear) when I first wrote it, but in refining it I've busted it and struggled for two days now trying to get it to work, including step by step, or as a script...can't figure out how I've broken it. I hoping someone wil spot the error, grateful for any help you can provide, it doesn't have to be efficient, just work.

Symptom is only the last hyperlink in the terms in included, instead of all of them

Here's the (non-working) script as is, mainly just search and replace, grateful for any help you can provide....

#!/bin/bash
sh --version
debug=":"
debug="echo"
SEQ=/usr/bin/seq
#tr -s '\n' < definitions.txt > temp1.txt
#tr -s ' ' < temp1.txt > definitions.txt
sed -i "s/\./yyyyy/g" definitions.txt
sed -i "s/(/ ( /g" definitions.txt
sed -i "s/\//zzzzz/g" definitions.txt
#sed -i "s/(/( /g" definitions.txt
sed -i "s/,/ , /g" definitions.txt
sed -i "s/)/ ) /g" definitions.txt
tr ' ' '_' < definitions.txt > definitions_underscore
tr -s '\n' < terms > temp2
tr -s ' ' < temp2 > terms
tr A-Z a-z < terms > terms_lowercase
tr -d ' =;:`"<>,./?!@#$%^&(){}[]+~-' < terms_lowercase > terms_url
sed -i "s/\./yyyyy/g" terms
sed -i "s/\//zzzzz/g" terms
tr ' ' '_' < terms > terms_search
a=( $( cat terms_search ) )
b=( $( cat terms_url ) )
$debug " Number of elements in array is $(( ${#a[@]} ))"
for i in $($SEQ 0 $((${#a[@]} - 1)))
do
echo ${a[$i]}
echo ${b[$i]}
sed -i "s/_"${a[$i]}"_/\_\<a\_href="\"${b[$i]}"\.php\"\>"${a[$i]}"\<\/a\> /g" definitions_underscore
done
sed -i "s/__(__/(/g" definitions_underscore.txt
sed -i "s/__,/,/g" definitions_underscore.txt
sed -i "s/__)/)/g" definitions_underscore.txt
sed -i "s/yyyyy/\./g" definitions_underscore.txt
sed -i "s/zzzzz/\//g" definitions_underscore.txt
sed -i "s/yyyyy/\./g" terms.txt
sed -i "s/_\./\./g" terms.txt
sed -i "s/ \./\./g" terms.txt
tr '_' ' ' < definitions_underscore > definitions_linked.html
 

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LEARN ABOUT DEBIAN

sysprofile

SYSPROFILE(8)						      System Manager's Manual						     SYSPROFILE(8)

NAME

       sysprofile - modular centralized shell configuration

DESCRIPTION

       sysprofile is a generic approach to configure shell settings in a modular and centralized way mostly aimed at avoiding work for lazy sysad-
       mins.  It has only been tested to work with the bash shell.

       It basically consists of the small /etc/sysprofile shell script which invokes other small shell scripts having a  .bash	suffix	which  are
       contained  in  the  /etc/sysprofile.d/  directory.   The system administrator can drop in any script he wants without any naming convention
       other than that the scripts need to have a .bash suffix to enable automagic sourcing by /etc/sysprofile.

       This mechanism is set up by inserting a small shell routine into /etc/profile for login	shells	and  optionally  into  /etc/bashrc  and/or
       /etc/bash.bashrc for non-login shells from where the actual /etc/sysprofile script is invoked:

	   if [ -f /etc/sysprofile ]; then
		   . /etc/sysprofile
	   fi

       For  using  "sysprofile"  under X11, one can source it in a similar way from /etc/X11/Xsession or your X display manager's Xsession file to
       provide the same shell environment as under the console in X11.	See the example files in /usr/share/doc/sysprofile/ for illustration.

       For usage of terminal emulators with a non-login bash shell under X11, take care to enable sysprofile via  /etc/bash.bashrc.   If  not  set
       this way, your terminal emulators won't come up with the environment defined by the scripts in /etc/sysprofile.d/.

       Users  not  wanting /etc/sysprofile to be sourced for their environment can easily disable it's automatic mechanism.  It can be disabled by
       simply creating an empty file called $HOME/.nosysprofile in the user's home directory using e.g. the touch(1) command.

       Any single configuration file in /etc/sysprofile.d/ can be overridden by any user by  creating  a  private  $HOME/.sysprofile.d/  directory
       which  may  contain  a  user's  own version of any configuration file to be sourced instead of the system default.  It's names have just to
       match exactly the system's default /etc/sysprofile.d/ configuration files.  Empty versions of these files contained in  the  $HOME/.syspro-
       file.d/ directory automatically disable sourcing of the system wide version.

       Naturally, users can add and include their own private script inventions to be automagically executed by /etc/sysprofile at login time.

OPTIONS

       There are no options other than those dictated by shell conventions.  Anything is defined within the configuration scripts themselves.

SEE ALSO

       The  README  files  and	configuration  examples contained in /etc/sysprofile.d/ and the manual pages bash(1), xdm(1x), xdm.options(5), and
       wdm(1x).  Recommended further reading is everything related with shell programming.

       If you need a similar mechanism for executing code at logout time check out the related package syslogout(8) which is a very close  compan-
       ion to sysprofile.

BUGS

       sysprofile  in its current form is mainly restricted to bash(1) syntax.	In fact it is actually	a rather embarrassing quick and dirty hack
       than anything else - but it works.  It  serves the practical need to enable  a  centralized  bash  configuration   until  something  better
       becomes available.  Your constructive criticism in making  this	into something better" is very welcome.  Before i forget to mention it: we
       take patches... ;-)

AUTHOR

       sysprofile was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system.  Feel free to port it to and use
       it anywhere else under the conditions of either the GNU public license or the BSD license or both.  Better yet, please help to make it into
       something more worthwhile than it currently is.

																     SYSPROFILE(8)
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