shell-base/load/01-basic

#!/bin/bash


if [[ ! $(command -v arch) ]]; then
 function arch() { 
  uname -m 
  }
fi

function function_list {
  if [ $1 ]; then
    # will list functions in passed file
    local STR
    local func
    declare -a FUNCS
    STR=$(grep '() {\|(){\|function' $1)
    readarray -t LIST  <<<"$STR"
    for func in "${LIST[@]}"
    do
      if [[ ! $func =~ ^# ]]; then
        func=${func#function }
        func=${func%()?( ){}
        [[ ! $func =~ ^_ ]] && FUNCS+=($func)
      fi
    done
    echo "${FUNCS[@]}"
  else
    # will list all sourced/declared functions available
    echo
    echo -e "\033[1;4;32m""Functions:""\033[0;34m"
    declare -F |  grep -v "declare -f\s_" | awk {'print $3'}
    echo
    echo -e "\033[0m"
  fi
}

function alias_list() {
    echo
    echo -e "\033[1;4;32m""Aliases:""\033[0;34m"
    alias | awk {'print $2'} | awk -F= {'print $1'}
    echo
    echo -e "\033[0m"
}

get_shopt () {
  echo $([ "$(shopt -p $1 | grep '\-s')" ] && echo on || echo off)
}

# edit files
# echo set the system editor using EDITOR environment variable
edit() { ${EDITOR:-nano} $@; }
gedit() { ${GEDITOR:-xed} $@; }


unlocku () ( faillock --user $1 --reset )

rsynchg() { rsync --help | grep "\-$1"; }


gip () {
  if which jq &> /dev/null; then
  curl -s "https://dns.google/resolve?name=$1" | jq -r '.Answer[] | .data' 2>/dev/null | tail -n 1
  return 0
  else
  echo install jq to use this function
  return 1
  fi
} 

gpip () {
  curl https://ipv4.nsupdate.info/myip
} 


valid_ipv4() {
  local ip="$1"
  [[ "$ip" =~ ^([0-9]{1,3}\.){3}[0-9]{1,3}$ ]] || return 1
  for i in ${ip//./ }; do
      [[ "${#i}" -gt 1 && "${i:0:1}" == 0 ]] && return 1
      [[ "$i" -gt 255 ]] && return 1
  done
  return 0
}

dip () {
  local ip4 
  ip4=$(/bin/drill $1 | grep -A1 'ANSWER SECTION' | grep -v "ANSWER SECTION"  | rev | cut -f1 | rev)
  # echo first: $ip4
  if valid_ipv4 $ip4; then
  echo $ip4
  else
  /bin/drill $ip4 | grep -A1 'ANSWER SECTION' | grep -v "ANSWER SECTION"  | rev | cut -f1 | rev  
  fi
}