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about: searches body of man pages for subject


#!/bin/sh
# about: searches man pages text for reference
echo "about <subject> {section} finds <subject> in man pages or {section}"
echo "(assumes SCO Unix 3.2 2)"
echo " "
echo "(C)opyright 1991 Lawrence & Clark, Inc"
echo "(617) 762-0707"

if [ "$1" = "" ]
then
        exit
fi

eval flist=/usr/man/cat.${2:-"*"}
echo "(delete to exit)"
nomatch=15                      # so that something shows while searching...
for h in $flist
do
echo "Searching $h"
for i in $h/*
do
        file=`basename $i`
        section=`echo $i | sed "s/.*cat.\([A-Z]*\).*/\1 .../"`
        if [ `expr $file : '.*\.Z'` != 0 ] # expecting packed files     
                then
                looker=zcat
                else
                looker=cat 
        fi
        # find a match, if any
        line=`$looker $i | col -b | grep -ny "$1"`
        # This is just so you know it didn't die...
        nomatch=`expr $nomatch + 1`
        if [ $nomatch -gt 15 ]
                then
                nomatch=1
                echo -n "Examining "
                echo $section
                fi
        # If we have a match, display it in context
        if [ "$line" != "" ]
                then
                nomatch=1
                line=`expr "$line" : "\([0-9]*\):.*"`
                first=`expr $line - 3`
                last=`expr $line + 3`
                if [ $first -lt "1" ]
                        then   
                        first=1
                        fi
                # First couple of lines ...
                eval $looker $i | head -4
                # Now show it in context
                echo "----- \"$1 \"  found in context:"
                eval $looker $i | sed -n "$first,${last}p"
                echo "-----"
                echo "Read Man Entry? s to advance section,p to print"
                read choice
                case $choice in
                        [yY]) eval $looker $i | col -b | pg ;;
                        [pP]) eval $looker $i | col -b | lpr ;;
                        [sS]) break ;;
                        *) : ;;
                esac
                # reset counter so we don't look dead..
                nomatch=15
        fi
done
done
 

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