sed -i -E "s/ёж$/ёжик/g" *ru*; sed -i -E "s/еж([аиу])$/ёжик\1/g" *ru*
grep -E "(ёж|еж[аиу])$" *ru*
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>get-task-allow</key>
<false/>
</dict>
</plist>