bash programming

Bash Programming

学习地址

BASH Programming - Introduction HOW-TO

编程规范

Google Shell Code Style

/bin/bash

declare -a conns=(50 100 200 500 1000 1500)

for conn in ${conns[@]}; do
    echo $conn
done

一些 Debug 技巧

set -x
set -e
export PS4='+${BASH_SOURCE}:${LINENO}:${FUNCNAME[0]}: '
echo "Today is $(date %Y-%m-%d)"
set +x

说明： PS4 The value of this parameter is expanded as with PS1 and the value is printed before each command bash displays during an execution trace. The first character of PS4 is replicated multiple times, as neces-sary, to indicate multiple levels of indirection. The default is ”+ ”.

::: tip 日志输出

_log() {
    if [ "$_DEBUG" == "true" ]; then
        echo 1>&2 "$@"
    fi
}

:::