shell获取git相关信息

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#!/bin/bash
# 返回$1指定的git项目的当前分支(branch)或标签名(tag)
# $1 git项目源码位置,为空获则默认为当前文件夹
function current_branch() {
    local folder="$(pwd)"
    [ -n "$1" ] && folder="$1"
    git -C "$folder" rev-parse --abbrev-ref HEAD | grep -v HEAD
    # git -C "$folder" describe --tags --abbrev=8 --dirty --always
    # git -C "$folder" rev-parse --abbrev-ref HEAD | grep -v HEAD || \
    # git -C "$folder" describe --exact-match HEAD || \
    # git -C "$folder" rev-parse HEAD
}

function current_tag() {
    local folder="$(pwd)"
    [ -n "$1" ] && folder="$1"
    git -C "$folder" describe --tags --abbrev=8 --dirty --always
}

workdir=$(cd $(dirname $0); pwd)
branch="$(current_branch $workdir/../)"
tag="$(current_tag $workdir/../)"

version="$branch-$tag"
echo $version

shell下载文件

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#!/bin/bash
url=$1
dir=$2

echo $1 $2
download()
{
    cd  $dir  &> /dev/null
    if  [ $? - ne  0 ]
    then
    read  -p  "$dir No such file or directory,create now?(y/n)"  answer
        if  [  "$answer"  ==   "y"  ]; then
        mkdir  -p $dir
        cd  $dir
        wget $url &> /dev/null
                if  [ $? - ne  0 ]; then
                return  "52"
                fi
        else
        return  "51"
        fi
    else
    wget $url &> /dev/null
        if  [ $? - ne  0 ]; then
        return  "52"
        fi
    fi
}

download $url $dir
ret=$?
echo $ret
# if [ $ret == 0 ]; then
# echo "Download successfully."
# else
# echo "Download failed."
# fi
# # echo  $?
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