相关疑难解决方法(0)

我不确定如何if在shell中进行多项测试.我在编写这个脚本时遇到了麻烦:

echo "You have provided the following arguments $arg1 $arg2 $arg3"
if [ "$arg1" = "$arg2" && "$arg1" != "$arg3" ]
then
    echo "Two of the provided args are equal."
    exit 3
elif [ $arg1 = $arg2 && $arg1 = $arg3 ]
then
    echo "All of the specified args are equal"
    exit 0
else
    echo "All of the specified args are different"
    exit 4
fi

问题是我每次都会收到此错误:

./compare.sh:[:missing`]'找不到命令

如何验证当前分支中是否存在具有给定sha的提交？

解析输出有很多种方法,但我需要返回布尔值的最佳方法(用于bash脚本).

例如

sha=$1
if [ -z `git magic --validate $sha` ]; then
  echo "Invalid commit sha: $sha"
  exit 1
fi

我想在那里得到这个问题,看看我是否做得对.以下脚本工作,除了检查提交是否已被推送到远程仓库,我找不到正确的命令:

#!/bin/bash
set -e  # fail on first error    
verify_git_ref() {
        log "Verifying git tag or commit: \"$1\" ...."
        if git show-ref --tags --quiet --verify -- "refs/tags/$1"
        then
            log_success "Git tag \"$1\" verified...."
            GIT_TAG_OR_REF=$1
            return 0
        elif git rev-list $1>/dev/null 2>&1
        then
            log_success "Git commit \"$1\" verified...."
            GIT_TAG_OR_REF=$1
            return 0
        else
            log_error "\"$1\" is not a valid tag or commit, you must use a valid tag or commit in order for this script to continue"
            return 1
        fi …

如何检查我的 GIT 存储库中是否存在标签。我得到一些标记名作为输入，我必须检查它是否是带有if else statement. TAG="tagname"的有效标记

我试过：

if [ git rev-parse ${TAG} >/dev/null 2>&1 ]; then
  echo "tag exists";
else
  echo "tag does not exist";

但它没有用