initial commit

icp

@@ -0,0 +1,75 @@
+#!/bin/bash
+usage() {
+  echo >&2 "Usage: $(basename $0) [OPTION] SOURCE... DEST"
+  echo >&2 "Copy like cp, but use rsync in the background."
+  echo >&2 "Options:"
+  echo >&2 " -h      print this help message"
+  echo >&2 " -n      print rsync command and perform a dry-run"
+  echo >&2 " -r      copy directories recursively"
+  echo >&2 " -v      verbose output"
+  echo >&2 "Positional arguments:"
+  echo >&2 " SOURCE  file/directory to copy"
+  echo >&2 " DEST    target directory or filename (if only one SOURCE)"
+}
+# Error codes: rsync compatible
+EXIT_SUCCESS=0        # rsync: Success
+EXIT_INVALID_OPTION=1 # rsync: Syntax or usage error
+EXIT_INVALID_PATH=3   # rsync: Errors selecting input/output files, dirs
+# Argument parsing:
+# -validate arguments
+# -get flags
+# -remove trailing slash from directories
+flag_recursive=0
+flag_dryrun=0
+rsync_opt=("-lptgoD")
+rsync_arg=()
+for arg in "$@"
+do
+  if [[ "$arg" == "-h" ]];then
+    usage
+    exit $EXIT_SUCCESS
+  elif [[ "$arg" == "-r" ]];then
+    flag_recursive=1
+    rsync_opt+=("-r")
+  elif [[ "$arg" == "-v" ]];then
+    rsync_opt+=("-v")
+  elif [[ "$arg" == "-n" ]];then
+    flag_dryrun=1
+    rsync_opt+=("-nv")
+  elif [[ -f "$arg" ]];then
+    rsync_arg+=("$arg")
+  elif [[ -d "$arg" ]];then
+    [[ "$arg" == */ ]] && arg="${arg::-1}"
+    rsync_arg+=("$arg")
+  elif [[ "$arg" == -* ]];then
+    echo >&2 "Invalid option: $arg"
+    exit $EXIT_INVALID_OPTION
+  else
+    echo >&2 "Not a file or directory: $arg"
+    exit $EXIT_INVALID_PATH
+  fi
+done
+    
+# If last argument (target) is a directory
+# add a trailing slash
+if [[ -d "${rsync_arg[-1]}" ]];then
+  rsync_arg[-1]="${rsync_arg[-1]}/"
+fi
+
+# If this is not a dry-run, add a nice overall
+# progress bar
+if [[ "$flag_dryrun" -eq 0 ]]; then
+  rsync_opt+=("--info=progress2")
+fi
+
+# Construct command
+cmd="rsync ${rsync_opt[@]} ${rsync_arg[@]}"
+
+# Print the command to stdout if this is a dry-run
+if [[ "$flag_dryrun" -eq 1 ]]; then
+  echo $cmd
+fi
+
+# Do the work and return rsync exit code
+eval $cmd
+exit $?