Some useful bash functions

custom_shell_functions.sh

#!/bin/sh
# A script with functions to add to .bashrc

# Uploads a file to transfer.sh
# see https://transfer.sh/
# usage: transfer hello.txt
# requirements: curl
transfer() {
  if [ $# -eq 0 ]; then
    echo "No arguments specified.\nUsage:\n transfer <file|directory>\n ... | transfer <file_name>" >&2
    return 1
  fi
  if tty -s; then
    file="$1"
    file_name=$(basename "$file")
    if [ ! -e "$file" ]; then
      echo "$file: No such file or directory" >&2
      return 1
    fi
    if [ -d "$file" ]; then
      file_name="$file_name.zip" ,
      (cd "$file" && zip -r -q - .) | curl --progress-bar --upload-file "-" "https://transfer.sh/$file_name" | tee /dev/null,
    else cat "$file" | curl --progress-bar --upload-file "-" "https://transfer.sh/$file_name" | tee /dev/null; fi
  else
    file_name=$1
    curl --progress-bar --upload-file "-" "https://transfer.sh/$file_name" | tee /dev/null
  fi
}

#custom function, opens a process outside the process, no logs
# https://unix.stackexchange.com/a/524176/244364
function open_detached () {
  nohup xdg-open "$*" > /dev/null 2>&1
}

#custom function, loads .env file env vars
#https://gist.github.com/mihow/9c7f559807069a03e302605691f85572#gistcomment-2721971
function load_env () {
  set -o allexport; source "$*"; set +o allexport
}

#include first line in grep
#https://stackoverflow.com/a/9969881/1640414
function grep1() { awk -v pattern="${1:?pattern is empty}" 'NR==1 || $0~pattern' "${2:-/dev/stdin}"; }