fixup ff0038d9: reproducible Debian: matrix is a bashism…

Signed-off-by: Holger Levsen <holger@layer-acht.org>

32 files changed, 32 insertions, 32 deletions

diff --git a/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/bbx15-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/bpi0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/cb3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/cbxi4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/cbxi4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/cbxi4pro0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/ff2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/ff2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/ff4a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/jenkins-test-vm/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/jenkins/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/jenkins/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/jenkins/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/jenkins/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/jtk1a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/odu3a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/odxu4-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/odxu4b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/odxu4c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/opi2a-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/opi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/opi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build1-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build10-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build11-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build12-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build12-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build12-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build12-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build15-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build16-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build16-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build16-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build16-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build2-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build5-amd64/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/profitbricks-build6-i386/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/rpi2b-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/rpi2c-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/wbd0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2
diff --git a/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment b/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
index 7e0e6142..d317b117 100755
--- a/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
+++ b/hosts/wbq0-armhf-rb/etc/pbuilder/rebuild-hooks/D01_modify_environment
@@ -10,7 +10,7 @@ BUILDDIR="${BUILDDIR:-/tmp/buildd}"
 #
 # doing variations for the 2nd builds:
 #
-REAL_HOSTNAME=$HOSTNAME
+REAL_HOSTNAME=$(hostname)
 echo "disorder-fs debug: Running on $REAL_HOSTNAME."
 
 echo "I: Changing host+domainname to test build reproducibility" >&2