とにかく並列で処理したい

find_parallel.sh

parallel=
xargs_type=
para_func=

function find_parallel() {
  echo test | gparallel --gnu echo >/dev/null 2&>/dev/null && parallel="gparallel --gnu" && para_func="_parallel"

  if [[ -z "$parallel" ]]; then
    echo test | parallel --gnu echo >/dev/null 2&>/dev/null && parallel="parallel --gnu" && para_func="_parallel"
  fi

  if [[ -z "$parallel" ]]; then
    xargs --version >/dev/null 2&>/dev/null && para_func="_xargs" && xargs_type="GNU"

    if [[ -z "$xargs_type" ]]; then
      which xargs >/dev/null 2&>/dev/null && para_func="_xargs" && xargs_type="BSD"
    fi
  fi

  if [[ -z "$para_func" ]]; then
    para_func="serial"
  fi
}

function _parallel() {
  $parallel -j 4 {} ::: $@
}

function _xargs() {
  if [[ "$xargs_type" = "GNU" ]]; then
    echo $@ | xargs -d ' ' -I {} -n 4 bash -c {}
  else
    echo $@ | xargs -I {} -n 4 -P 4 bash -c {}
  fi
}

function serial() {
  for func in $@
  do
    $func
  done
}

find_parallel

usage.sh

#!/bin/bash

souce find_parallel.sh

function test_func_1() {
  echo "call test_func_1"
}

function test_func_2() {
  echo "call test_func_2"
}

testcases=$(cat $0 | grep '^function test_func_' | sed 's/^.*\(test_func_[0-9a-zA-Z_]*\)(.*/\1/g')

for testcase in $testcases; do export -f $testcase; done
$para_func $testcases