Category Archives: Uncategorized

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reCaptcha is easy, has plenty of tutorials. However you will find also many comments telling that it always returns bool(false). Many user eventually accept the false reply as “there is a reply at least, so I validate my form”. The … Continue reading →

Use rsync, like: rsync -a –ignore-times updatedfiles/* /var/www/filestoupdate/  

Owncloud synchronization on a windows 7 machine used to be insanely slow, sometimes to the point of need to hard reset. I could solve this by: – open the Internet settings – connections tab – network parameters – uncheck the … Continue reading →

In one shot:  postqueue -p | tail -n +2 | awk ‘BEGIN { RS = “” } /@domain\.tld/ { print $1 }’ | tr -d ‘*!’ | postsuper -d –

revert to version XXX svn update -rXXX svn logs, last 10 entries svn log  -l 10 svn log, more info from version XXX svn log -rXXX –verbose

ram is faster than disk, this is less and less true with ssd, but in many situations it is still true, and can be useful to use the ram to serve files at high speed access. Example script that first unmount … Continue reading →

/etc/postfix/main.cf make sure you have included this: hash:/etc/postfix/access, in smtpd_sender_restrictions = ……………. Note you can also avoid receving to a specific domain if you add this also in reject_unauth_destination ruleset. /etc/postfix/access Have your domain listed like: evildomain.tld   REJECT outta.here … Continue reading →

you can use firewall rules, or if you dont use nfs, just stop it and remove it from starting: service rpcbind stop update-rc.d nfs-common disable update-rc.d rpcbind disable Check that it is not listening to requests with: rpcinfo -T udp … Continue reading →

This is a Google Chrome move for your own good. (After version 53) Make sure your ssl.conf in apache mods does not allow old/weak protocols, have something like: SSLCipherSuite ALL:!ADH:!RC4:+HIGH:+MEDIUM:!LOW:!SSLv2:!EXPORT