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Code Issues Releases Wiki Activity

hide lots of unnecessary and scary output during setup

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This commit is contained in:
Joshua Tauberer
2014-07-16 09:06:45 -04:00
parent 465aaf2d30
commit 023cd12e1a
12 changed files with 70 additions and 29 deletions
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43
setup/functions.sh
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@@ -1,22 +1,58 @@
function hide_output {
# This function hides the output of a command unless the command fails
# and returns a non-zero exit code.
# Get a temporary file.
OUTPUT=$(tempfile)
# Execute command, redirecting stderr/stdout to the temporary file.
$@ &> $OUTPUT
# If the command failed, show the output that was captured in the temporary file.
if [ $? != 0 ]; then
# Something failed.
echo
echo FAILED: $@
echo -----------------------------------------
cat $OUTPUT
echo -----------------------------------------
fi
# Remove temporary file.
rm -f $OUTPUT
}
function apt_install {
# Report any packages already installed.
PACKAGES=$@
TO_INSTALL=""
ALREADY_INSTALLED=""
for pkg in $PACKAGES; do
if dpkg -s $pkg 2>/dev/null | grep "^Status: install ok installed" > /dev/null; then
echo $pkg is already installed \(`dpkg -s $pkg | grep ^Version: | sed -e "s/.*: //"`\)
if [[ ! -z "$ALREADY_INSTALLED" ]]; then ALREADY_INSTALLED="$ALREADY_INSTALLED, "; fi
ALREADY_INSTALLED="$ALREADY_INSTALLED$pkg (`dpkg -s $pkg | grep ^Version: | sed -e 's/.*: //'`)"
else
TO_INSTALL="$TO_INSTALL""$pkg "
fi
done
# List the packages already installed.
if [[ ! -z "$ALREADY_INSTALLED" ]]; then
echo already installed: $ALREADY_INSTALLED
fi
# List the packages about to be installed.
if [[ ! -z "$TO_INSTALL" ]]; then
echo installing $TO_INSTALL...
fi
# 'DEBIAN_FRONTEND=noninteractive' is to prevent dbconfig-common from asking you questions.
DEBIAN_FRONTEND=noninteractive apt-get -qq -y install $PACKAGES > /dev/null;
# Although we could pass -qq to apt-get to make output quieter, many packages write to stdout
# and stderr things that aren't really important. Use our hide_output function to capture
# all of that and only show it if there is a problem (i.e. if apt_get returns a failure exit status).
DEBIAN_FRONTEND=noninteractive \
hide_output \
apt-get -y install $PACKAGES
}
function get_default_hostname {
@@ -101,3 +137,6 @@ function ufw_allow {
fi
}
function restart_service {
hide_output service $1 restart
}