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Add help command and standard CLI switches

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This commit is contained in:
Ricardo Andrade 2019-09-06 15:13:13 -05:00
commit be34efabd7
1 changed files with 20 additions and 3 deletions
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23
install.sh
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@ -1,4 +1,5 @@
#!/bin/bash #!/bin/bash
THIS_VERSION="1.0"
# Call with: # Call with:
# bash -c "$(curl -L https://rstd.io/r-install)" # bash -c "$(curl -L https://rstd.io/r-install)"
@ -10,7 +11,7 @@ SCRIPT_ACTION=${SCRIPT_ACTION:-install}
R_VERSION=${R_VERSION:-} R_VERSION=${R_VERSION:-}
# The version may optionally be provided as a second argument # The version may optionally be provided as a second argument
if [[ "$2" != "" ]]; then if [[ "$2" != "" ]]; then
R_VERSION=$2cd R_VERSION=$2
fi fi
SUDO= SUDO=
@ -409,12 +410,28 @@ do_install () {
install "${installer_type}" "${installer_file_name}" "${os}" "${os_ver}" install "${installer_type}" "${installer_file_name}" "${os}" "${os_ver}"
} }
do_show_usage() {
echo "r-builds quick install version ${THIS_VERSION}"
echo "Usage: `basename $0` [-i|-r|-v|-h|install|rversions|version|help]"
echo "Where:"
echo "'-i' or 'install' [version] (default) install the given version or list R versions available for quick install and prompt for one if none is provided"
echo "'-r' or 'rversions' list the R versions available for quick install, one per line"
echo "'-v' or 'versions' shows the version of this command"
echo "'-h' or 'help' show this info"
}
# Choose a command to perform # Choose a command to perform
case ${SCRIPT_ACTION} in case ${SCRIPT_ACTION} in
"install") "-i"|"install")
do_install do_install
;; ;;
"versions") "-r"|"rversions")
do_show_versions do_show_versions
;; ;;
"-v"|"version")
echo "r-builds quick install version ${THIS_VERSION}"
;;
"-h"|"help"|*)
do_show_usage
;;
esac esac