Home/ Questions/Q 8526047
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-11T08:09:29+00:00

I do some replacements in an XML file (I know this is bad but

  • 0

I do some replacements in an XML file (I know this is bad but it’s only for quickly testing out some stuff – normally I would use a parser for this) using sed. I have 4 statements which look quite the same, i.e. the matching part differs only in the key

  sed -i "s/\(key=\"liferay.db.host\" value=\)\".*\"/\1\"$hostname\"/" "$installer_directory/silent.xml"
  sed -i "s/\(key=\"idm.backend.db.host\" value=\)\".*\"/\1\"$hostname\"/" "$installer_directory/silent.xml"
  sed -i "s/\(key=\"idm-frontend.portal-tarent.tarent-frontend-host\" value=\)\".*\"/\1\"$hostname\"/" "$installer_directory/silent.xml"
  sed -i "s/\(key=\"openid-idp.hostname\" value=\)\".*\"/\1\"$hostname\"/" "$installer_directory/silent.xml"

Now I wonder if there is some way to put these into one sed statement?

Something like

/\(key="(first_key|second_key|third_key)"\) value=\)\".*\"/
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    This might work for you (GNU sed):

    sed -i 's/\(key="\(liferay\.db\.host\|idm\.backend\.db\.host\|idm-frontend\.portal-tarent\.tarent-frontend-host\|openid-idp\.hostname\)" value=\)".*"/\1"'"$hostname"'"/' "$installer_directory/silent.xml"

    Used alternation to shorten the four commands to one and replaced periods, which may have be interpreted as metacharacters, to match real periods.

    • 0