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| Code Block |
|---|
| language | bash |
|---|
| theme | RDark |
|---|
| title | Set if not already defined |
|---|
| collapse | true |
|---|
|
: ${var=value} |
This one is obscure....<TODO> explain!
| Code Block |
|---|
| language | bash |
|---|
| theme | RDark |
|---|
| title | Set if not defined OR set to the empty string |
|---|
| collapse | true |
|---|
|
: ${var:=value} |
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| Code Block |
|---|
| language | bash |
|---|
| theme | RDark |
|---|
| title | Install packages via sudo only if it is not already installed |
|---|
| collapse | true |
|---|
|
install_package ()
{
PACKAGE_NAME=$1
# Does not work if the package has been installed and later removed
# dpkg -s ${PACKAGE_NAME} > /dev/null
dpkg-query -W -f='${Status}' ${PACKAGE_NAME} | grep -q -P '^install ok installed$'
if [ $? -ne 0 ]; then
sudo apt-get -q -y install ${PACKAGE_NAME} > /dev/null
else
pretty_print " $(padded_message ${PACKAGE_NAME} "found")"
return 0
fi
if [ $? -ne 0 ]; then
pretty_error " $(padded_message ${PACKAGE_NAME} "failed")"
return 1
fi
pretty_warning " $(padded_message ${PACKAGE_NAME} "installed")"
return 0
}
# usage
install_package ansible |
...