Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/116#discussion_r10551389
--- Diff: bin/spark-shell ---
@@ -30,69 +30,367 @@ esac
# Enter posix mode for bash
set -o posix
-CORE_PATTERN="^[0-9]+$"
-MEM_PATTERN="^[0-9]+[m|g|M|G]$"
-
+## Global script variables
FWDIR="$(cd `dirname $0`/..; pwd)"
-if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
- echo "Usage: spark-shell [OPTIONS]"
- echo "OPTIONS:"
- echo "-c --cores num, the maximum number of cores to be used by the
spark shell"
- echo "-em --execmem num[m|g], the memory used by each executor of spark
shell"
- echo "-dm --drivermem num[m|g], the memory used by the spark shell and
driver"
- echo "-h --help, print this help information"
- exit
-fi
+VERBOSE=0
+DRY_RUN=0
+SPARK_REPL_OPTS="${SPARK_REPL_OPTS:-""}"
+MASTER=""
+
+#CLI Color Templates
+txtund=$(tput sgr 0 1) # Underline
+txtbld=$(tput bold) # Bold
+bldred=${txtbld}$(tput setaf 1) # red
+bldyel=${txtbld}$(tput setaf 3) # yellow
+bldblu=${txtbld}$(tput setaf 4) # blue
+bldwht=${txtbld}$(tput setaf 7) # white
+txtrst=$(tput sgr0) # Reset
+info=${bldwht}*${txtrst} # Feedback
+pass=${bldblu}*${txtrst}
+warn=${bldred}*${txtrst}
+ques=${bldblu}?${txtrst}
+
+# Helper function to describe the script usage
+function usage() {
+ cat << EOF
+
+${txtbld}Usage${txtrst}: spark-shell [OPTIONS]
+
+${txtbld}OPTIONS${txtrst}:
+
+${txtund}basic${txtrst}:
+
+ -h --help : print this help information.
+ -c --executor-cores : the maximum number of cores to be used by
the spark shell.
+ -em --executor-memory : num[m|g], the memory used by each executor
of spark shell.
+ -dm --drivermem --driver-memory : num[m|g], the memory used by
the spark shell and driver.
+
+${txtund}soon to be deprecated${txtrst}:
+
+ --cores : please use -c/--executor-cores
+
+${txtund}other options${txtrst}:
+
+ -mip --master-ip : Spark Master IP/Host Address
+ -mp --master-port : num, Spark Master Port
--- End diff --
I'm not sure if the "num" qualifications are useful, I think all parameters
either start with "number of" or "port", which is pretty clear.
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