clean code and add online doc link info

Author: oldratlee

c

@@ -13,9 +13,7 @@ copy() {
     case "`uname`" in
     Darwin*)
         pbcopy ;;
-    CYGWIN*)
-        clip ;;
-    MINGW*)
+    CYGWIN*|MINGW*)
         clip ;;
     *)
         xsel -b ;;

console-text-color-themes.sh

@@ -1,6 +1,9 @@
 #!/bin/bash
 # @Function
 # show all console text color themes.
+#
+# @online-doc https://github.com/oldratlee/useful-scripts/blob/master/docs/shell.md#beer-console-text-color-themessh
+# @author Jerry Lee (oldratlee at gmail dot com)
 
 readonly _ctct_PROG="$(basename "$(readlink -f "$0")")"
 [ "$_ctct_PROG" == 'console-text-color-themes.sh'  ] && readonly _ctct_is_direct_run=true

echo-args.sh

@@ -1,27 +1,22 @@
 #!/bin/bash
+# @Function
+# print arguments in human and debug friendly style.
+#
+# @online-doc https://github.com/oldratlee/useful-scripts/blob/master/docs/shell.md#beer-echo-argssh
+# @author Jerry Lee (oldratlee at gmail dot com)
 
-readonly ec=$'\033' # escape char
+readonly ebegin=$'\033[1;31m' # escape begin, red color
 readonly eend=$'\033[0m' # escape end
 
-redEcho() {
-    if [ -c /dev/stdout ] ; then
-        # if stdout is console, turn on color output.
-        echo -n "$ec[1;31m$@$eend"
-    else
-        echo -n "$@"
-    fi
-}
-
 echoArg() {
     local index=$1
     local count=$2
     local value=$3
 
-    echo -n "$index/$count: "
-    redEcho "["
-    echo -n "$value"
-    redEcho "]"
-    echo
+    # if stdout is console, turn on color output.
+    [ -c /dev/stdout ] &&
+        echo "$index/$count: $ebegin[$eend$value$ebegin]$eend" || 
+        echo "$index/$count: [$value]"
 }