bug #5629 Fixing web user permission (BenoitLeveque)

This PR was merged into the 2.3 branch.

Discussion
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Fixing web user permission

If you have another web server like tomcat on your server, the previous command end up returning tomcat instead of apache.

Previously we looked at the whole line, now only at the user and the command name

Commits
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78ce3e9 Fix the way we found the apache/nginx user

Author: wouterj

book/installation.rst

@@ -239,7 +239,7 @@ If there are any issues, correct them now before moving on.
         $ rm -rf app/cache/*
         $ rm -rf app/logs/*
 
-        $ HTTPDUSER=`ps aux | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\  -f1`
+        $ HTTPDUSER=`ps axo user,comm | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\  -f1`
         $ sudo chmod +a "$HTTPDUSER allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
         $ sudo chmod +a "`whoami` allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
 
@@ -254,7 +254,7 @@ If there are any issues, correct them now before moving on.
 
     .. code-block:: bash
 
-        $ HTTPDUSER=`ps aux | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\  -f1`
+        $ HTTPDUSER=`ps axo user,comm | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\  -f1`
         $ sudo setfacl -R -m u:"$HTTPDUSER":rwX -m u:`whoami`:rwX app/cache app/logs
         $ sudo setfacl -dR -m u:"$HTTPDUSER":rwX -m u:`whoami`:rwX app/cache app/logs