add completion for bkp, add func destroy

sub/bash/completion

@@ -7,6 +7,15 @@ _ssh() {
     return 0
 }
 
+_bkp() {
+    local cur opts
+    COMPREPLY=()
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    opts=$(ls ~/.backup/1)
+    COMPREPLY=( $(compgen -W "$opts" -- ${cur}) )
+    return 0
+}
+
 _workon() {
     local cur prev envs
     COMPREPLY=()
@@ -20,4 +29,5 @@ _workon() {
 complete -F _workon workon
 complete -F _ssh ssh
 complete -F _ssh sftp
+complete -F _bkp bkp
 

sub/bash/functions

@@ -1,4 +1,14 @@
 
+
+destroy() {
+    test -n "$1" || return 1
+    test -e "$1" || return 1
+
+    echo "Sure want to destroy file '$1' with size $(du -hs "$1" | awk '{printf $1}') [y/N] "
+    read -r response
+    [[ $response == [yY] ]] && shred -zun 25 "$1"
+}
+
 lsl () {
 
     local DIR