I have dozens of .html files all with different names of which old head and nav I need to replace with a new improved head and nav.
I know awk would be suitable for such operation but I am not confident on how to proceed.
NOTE: The title tag of the every html file is going to be replaced with something fixed, I think I will circumvent this issue by either leaving "Plant Database" or rendering the html title dynamically (every .html file has a correct file name), however that's also something I would need help on how to do. (document.title I assume?)
Old file content (first 69 lines):
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><!-- InstanceBegin template="/Templates/templatefrø.dwt" codeOutsideHTMLIsLocked="false" -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- InstanceBeginEditable name="doctitle" -->
<title>Apotekerkattost - Malva sylvestris</title>
<!-- InstanceEndEditable -->
<!-- InstanceBeginEditable name="head" -->
<!-- InstanceEndEditable -->
<link rel="shortcut icon" href="bilder/faviconefferus.ico">
<link href="styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="header"><img src="bilder/efferus1.jpg" width="289" height="129" alt="Efferus veksthus" /></div>
<div id="menu">
<a href="index.html" ><img src="bilder/Home.jpg" border="0" width="128" height="35" /></a><a href="planteshop.html"><img src="bilder/Frørød.jpg" border=0 width="123" height="35" /></a>
<a href="soppshop.html"><img src="bilder/soppsort.jpg" border="0" width="138" height="35" /></a>
<a href="skogshop.html"><img src="bilder/skogshop.jpg" border="0" width="138" height="35" /></a>
<a href="Oppskrifter.html"><img src="bilder/Oppskrifter.jpg" border="0" width="118" height="35" /></a>
</div>
<br >
<div id="middle">
<div id="submenu"><table width="201" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><div align="center"><img src="bilder/subtop.jpg" width="198" height="24" /></div></td>
</tr>
<tr>
<td><div align="center" >
<p>
<a href="planteshop.html">Planteshop</a><br><br>
<a href="fro.html">Frø- og plantekatalog</a><br><br>
<a href="plantebistand.html">Plantebistand</a><br><br>
<a href="kurs.html">Kurskalender </a><br><br>
<a href="bie.html">Humle- og bieplanter</a><br><br>
<a href="hsoner.html">Planter inndelt etter herdighetssone</a><br><br>
<a href="plantepakker.html">Plantepakker</a><br><br>
<a href="trehage.html">Hva er en skoghage?</a><br><br>
<a href="skoghagebilder.html">Bilder fra en skoghage</a><br><br>
<a href="nitrogen.html">Nitrogenfiksering</a><br><br>
<a href="jord.html">Jorddekkere</a><br><br>
<a href="vind.html">Vindbrytere</a><br><br>
<a href="tre.html">Trær</a><br><br>
<a href="busker.html">Busker</a><br><br>
<a href="perennial.html">Stauder</a><br><br>
<a href="systemplanter.html">Systemplanter</a><br><br>
<a href="andre.html">Andre planter</a><br><br>
<a href="Rovinsekter.html">Skadeinsekter og nytteinsekter</a><br><br>
<a href="plantesykdommer.html">Plantesykdommer</a><br><br>
<a href="formering.html">Planteformering</a><br><br>
<a href="beskjaering.html">Beskjæring</a><br><br>
<a href="ugressmiddler.html">Ugressmiddel</a><br><br>
<a href="http://www.facebook.com/EfferusVeksthus">Efferus veksthus på <img src="bilder/fb.jpg" width="15" height="15" /></a><br><br>
<a href="https://www.facebook.com/groups/662923897182715/?fref=ts">"Dyrking av Storhassel i Norge" på <img src="bilder/fb.jpg" width="15" height="15" /></a><br><br>
<a href="https://www.facebook.com/groups/245491145952851/?fref=ts">Skadeinsekter, nytteinsekter og plantesykdommer på <img src="bilder/fb.jpg" width="15" height="15" /></a><br><br>
<a href="hvemerfro.html">Hvem er Efferus?</a><br><br>
<a href="kontaktfro.html">Kontakt</a><br><br>
<a href="open.html">Åpningstider</a><br><br>
</p>
</div></td>
</tr>
<tr>
<td><div align="center"><img src="bilder/subbottom.jpg" width="198" height="35" /></div></td>
</tr>
</table>
</div>
New file content (51 lines):
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Plant Database</title>
<link rel="shortcut icon" href="bilder/deciduous-tree.ico">
<link href="main_styles.css" rel="stylesheet" type="text/css"/>
<style>
@import url('https://fonts.googleapis.com/css2?family=Domine:wght@400;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Domine:wght@400;600;700&family=Lato:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700;1,900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Playfair Display:ital,wght@0,400;0,500;1,400&display=swap');
</style>
</head>
<!-- ALWAYS ON HOME BUTTON -->
<a href="/NEW_index.html"><img id=left_space style="position: fixed; top: 1.5rem;" src="./bilder/Efferus_logo_black.png" width="100px"></a>
<!-- HEADER -->
<nav >
<!-- LOGO -->
<div id=left_space ><a href="/NEW_index.html"><img src="bilder/Efferus_logo_white.PNG" width="100px" alt="efferus_logo"/></a></div>
<!-- NAVIGATION MENU -->
<ul >
<!-- USING CHECKBOX HACK -->
<input type="checkbox" id="checkbox_toggle" />
<label for="checkbox_toggle" >☰</label>
<!-- NAVIGATION MENUS -->
<div >
<li><a href="./plantebistand.html">Plantebistand</a></li>
<li >
<a href="./database.html">Database</a>
<!-- <ul >
<li><a href="./fro.html">Frø og Planter </a></li>
<li><a href="./Oppskrifter.html">Konserving</a></li>
<li><a href="./husapotek.html">Husapotek</a></li>
<li><a href="/">Dropdown 3</a></li>
<li><a href="/">Dropdown 4</a></li>
</ul> -->
</li>
<li><a href="./hvemer.html">Hvem er Efferus?</a></li>
<li><a href="./kontakt.html">Kontakt</a></li>
</div>
</ul>
</nav>
CodePudding user response：
You can do it with head and tail - for example, I am replacing first 3 lines of f1.txt with the first 2 lines from f2.txt
>>> cat f1.txt
a
b
c
d
e
>>> cat f2.txt
x
y
z
a
b
Output
>>> head -n 2 f2.txt;tail -n 4 f1.txt
x
y
d
e
CodePudding user response：
Here's a way with awk and a quoted heredoc, keeping the old title:
awk -v head_size=69 '
FNR == 1 {
fn
close (outfile)
outfile = FILENAME ".new"
ok = 0
}
fn == 1 {
head = head $0 "\n"
next
}
fn == 2 && FNR == 1 {
if ( match(head,/<title>.*<\/title>/) ) {
head_part1 = substr(head, 1, RSTART-1)
head_part2 = substr(head, RSTART RLENGTH)
} else {
print "error: title not found in replacement" | "cat 1>&2"
exit 1
}
}
FNR <= head_size && match($0,/<title>.*<\/title>/) {
title = substr($0,RSTART,RLENGTH)
ok = 1
}
FNR == head_size 1 {
if ( ok )
printf("%s%s%s", head_part1, title, head_part2) > outfile
else
print "warning: skipping " FILENAME ": title not found" | "cat 1>&2"
}
FNR > head_size && ok { print > outfile }
' - *.html <<'EOF'
<!DOCTYPE html>
<html lang="en">
...
EOF
for f in *.html.new
do
mv -v "$f" "${f%.new}"
done