Fix license text from xsl:comment to !--

xsl_license_fix.bash

#!/bin/bash
# Replace erroneous <xsl:comment> license tags with xml <!--> comments

bak="$HOME/tmp/xslbak"
mkdir -p "$bak"

find /usr/local/tusk/tusk-4_0_0 -name '*.xsl' -print0 | while IFS='' read -r -d '' fold ; do
    lic=`awk '/<xsl:comment>/,/<\\/xsl:comment>/' "$fold" | grep 'licenses/ecl1\.php'`
    if [ "" != "$lic" ] ; then
        fdir="${fold%/*}"
        fdir="${fdir#/usr/local/tusk/tusk-4_0_0/}"
        fn="${fold##*/}"
        fnew="$bak/$fdir/$fn"
        mkdir -p "$bak/$fdir"
        cp "$fold" "$fnew"
        cat > "$fold" <<EOF
<?xml version="1.0" encoding="utf-8"?>
<!--
 Copyright 2012 Tufts University

 Licensed under the Educational Community License, Version 1.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.opensource.org/licenses/ecl1.php

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
EOF
        awk '/<xsl:stylesheet/,/<\/xsl:stylesheet>/' "$fnew" >> "$fold"
    fi
done

Notes:

• Generally speaking, use of all-caps variable non-environment names is discouraged (/msg greybot !varcap on freenode)
• basename and dirname should be replaced with parameter expansion expressions (/msg greybot basename and /msg greybot dirname, as appropriate)
• Re-opening the NEW file every time you want to append a program's output to it is silly. Instead, you can open it once and reuse the file descriptor:
  exec 4>"$NEW"; one_command >&4; another_command >&4
• Piping multiple awk statements together is somewhat silly -- awk is almost as powerful a language as perl; you could have a single awk statement doing the work of all of them, and sed, and so on, but the #awk channel, not the #bash one, is appropriate for that.

Change:

find /usr/local/tusk/tusk-4_0_0 -name '*.xsl' | while read -r f ; do

to

find /usr/local/tusk/tusk-4_0_0 -name '*.xsl' -print0 | while IFS='' read -r -d '' f ; do