Changeset 407

Timestamp:

02/22/06 00:15:05 (7 years ago)

Author:

anarcat

Message:

[project @ alternc: changeset 2004-10-24 00:40:47 by anonymous]
document

Original author: anonymous
Date: 2004-10-24 00:41:16

Location:

install/scripts

Files:

• upgrade_check.sh (modified) (3 diffs)
• upgrades/README (modified) (1 diff)

install/scripts/upgrade_check.sh

@@ -1 +1 @@
 #!/bin/sh -e
 
-# extract version from filename by stripping the extension
+# this script will look for upgrade scripts in
+# /usr/share/alternc/install/upgrades and execute them based on the
+# extension
+#
+# usage:
+# $0 oldvers, where oldvers is the version of the package previously
+# installed
+#
+# an upgrade file is considered only if its basename is a version
+# number greater than the $oldvers argument
+
+# remove version from filename by stripping the extension
 strip_ext() {
         echo $1 | sed 's/\.[^.]*$//'
 }
 
+# find the version from a filename by stripping everything but the extension
 get_ext() {
         echo $1 | sed 's/^.*\.\([^.]*\)$/\1/'
@@ -17 +29 @@
 fi
 
+# the upgrade script we are considering
 extensions="*.sh *.php *.sql"
 cd /usr/share/alternc/install/upgrades
@@ -22 +35 @@
 do
         if [ -r $file ]; then
+                # the version in the filename
                 upvers=`strip_ext $file`
+                # the extension
                 ext=`get_ext $file`
                 if dpkg --compare-versions $upvers gt $oldvers; then
                   echo running upgrade script $file
+                  # run the proper program to interpret the upgrade script
                   case "$ext" in
                   sql)

install/scripts/upgrades/README

@@ -32 +32 @@
 package 0.9, car il sera exécuté, même si la version installée est 1.0.)
 
+Pour plus de détails, consultez directement le script
+../upgrade_check.sh, qui gère ces upgrades.
+
 Mise en situation
 -----------------