Linux Shell Online Test

Q: What topics are covered in the Linux Shell Online Test?

Linux壳 命令行 外壳脚本 Linux文件系统 流程管理 Linux中的网络 权限和安全性 软件包管理 文本处理 外壳变量 常用表达

About the test:

Linux Shell在线测试评估了候选人在使用Linux命令行和外壳脚本上的知识和熟练程度。该测试评估对Linux文件系统，过程管理，网络，权限和安全性，软件包管理，文本处理，外壳变量和正则表达式的理解。

Covered skills:

Linux壳
外壳脚本
流程管理
权限和安全性
文本处理
常用表达

命令行
Linux文件系统
Linux中的网络
软件包管理
外壳变量

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9 reasons why

Adaface Linux Shell Test is the most accurate way to shortlist Linux管理员s

Reason #1

Tests for on-the-job skills

The Linux Shell Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

有效地通过Linux命令行导航
编写和执行Shell脚本
了解和使用Linux文件系统
在Linux中管理流程
在Linux中配置和故障排除网络
在Linux中实施权限和安全措施
在Linux中管理软件包
使用linux shell命令操纵文本
使用壳变量
利用shell脚本中的正则表达式

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

这些只是我们库中有10,000多个问题的一个小样本。关于此的实际问题外壳在线评估将是不可行的.

🧐 Question
Medium Debugging Issues Environment Variables Debugging	Try practice test
You are working on a Linux system and have recently installed a new program named myprogram. The executable is located in /opt/myprogram/bin/. You want to be able to run this program from any directory in your shell without specifying the full path. You executed the following command: export PATH="/opt/myprogram/bin" However, when you try to run the program using myprogram, you get the following error message: -bash: myprogram: command not found Which of the following commands can fix this issue and allow you to run the program? A: export PATH=$PATH:/opt/myprogram/bin/ B: export PATH="/opt/myprogram:$PATH" C: export PATH="/opt/myprogram/bin:$PATH" D: ln -s /opt/myprogram/bin/myprogram /usr/local/bin/myprogram
Easy File Structure and Navigation Files Basic Commands	Try practice test
Consider the following directory structure: You start at /home/user and execute the following commands: What will be the resulting directory structure?
Medium Fork mellow yellow	Try practice test
How many times will the following code will print "Mellow Yellow"?
Medium Remote server connection SSH	Try practice test
Our software engineering intern, Wu is looking to use port 4545 on localhost to connect to a remote server called woot.bananas.com on port 80. Which command would you recommend for this?
Easy Commands	Try practice test
Which of the following unix commands change the case of first three lines of file “classified” from lowercase to uppercase
Easy Expressions	Try practice test
What does this shell script output?
Easy Loops	Try practice test
What are fourth and sixth lines output by this script:

	🧐 Question	🔧 Skill
	Medium Debugging Issues Environment Variables Debugging	2 mins Linux	Try practice test
You are working on a Linux system and have recently installed a new program named myprogram. The executable is located in /opt/myprogram/bin/. You want to be able to run this program from any directory in your shell without specifying the full path. You executed the following command: export PATH="/opt/myprogram/bin" However, when you try to run the program using myprogram, you get the following error message: -bash: myprogram: command not found Which of the following commands can fix this issue and allow you to run the program? A: export PATH=$PATH:/opt/myprogram/bin/ B: export PATH="/opt/myprogram:$PATH" C: export PATH="/opt/myprogram/bin:$PATH" D: ln -s /opt/myprogram/bin/myprogram /usr/local/bin/myprogram
	Easy File Structure and Navigation Files Basic Commands	2 mins Linux	Try practice test
Consider the following directory structure: You start at /home/user and execute the following commands: What will be the resulting directory structure?
	Medium Fork mellow yellow	2 mins Linux	Try practice test
How many times will the following code will print "Mellow Yellow"?
	Medium Remote server connection SSH	2 mins Linux	Try practice test
Our software engineering intern, Wu is looking to use port 4545 on localhost to connect to a remote server called woot.bananas.com on port 80. Which command would you recommend for this?
	Easy Commands	2 mins Shell Scripting	Try practice test
Which of the following unix commands change the case of first three lines of file “classified” from lowercase to uppercase
	Easy Expressions	2 mins Shell Scripting	Try practice test
What does this shell script output?
	Easy Loops	2 mins Shell Scripting	Try practice test
What are fourth and sixth lines output by this script:

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Debugging Issues Environment Variables Debugging	Linux	Medium	2 mins	Try practice test
You are working on a Linux system and have recently installed a new program named myprogram. The executable is located in /opt/myprogram/bin/. You want to be able to run this program from any directory in your shell without specifying the full path. You executed the following command: export PATH="/opt/myprogram/bin" However, when you try to run the program using myprogram, you get the following error message: -bash: myprogram: command not found Which of the following commands can fix this issue and allow you to run the program? A: export PATH=$PATH:/opt/myprogram/bin/ B: export PATH="/opt/myprogram:$PATH" C: export PATH="/opt/myprogram/bin:$PATH" D: ln -s /opt/myprogram/bin/myprogram /usr/local/bin/myprogram
	File Structure and Navigation Files Basic Commands	Linux	Easy	2 mins	Try practice test
Consider the following directory structure: You start at /home/user and execute the following commands: What will be the resulting directory structure?
	Fork mellow yellow	Linux	Medium	2 mins	Try practice test
How many times will the following code will print "Mellow Yellow"?
	Remote server connection SSH	Linux	Medium	2 mins	Try practice test
Our software engineering intern, Wu is looking to use port 4545 on localhost to connect to a remote server called woot.bananas.com on port 80. Which command would you recommend for this?
	Commands	Shell Scripting	Easy	2 mins	Try practice test
Which of the following unix commands change the case of first three lines of file “classified” from lowercase to uppercase
	Expressions	Shell Scripting	Easy	2 mins	Try practice test
What does this shell script output?
	Loops	Shell Scripting	Easy	2 mins	Try practice test
What are fourth and sixth lines output by this script:

Reason #4

1200+ customers in 75 countries

借助 Adaface，我们能够将初步筛选流程优化高达 75% 以上，为招聘经理和我们的人才招聘团队节省了宝贵的时间！

Brandon Lee, 人事主管, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment 外壳在线评估 in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the 外壳在线评估 from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

查看样本记分卡

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

Learn more

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About the Linux Shell Assessment Test

Why you should use Pre-employment Linux Shell Online Test?

The 外壳在线评估 makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

在编写和执行自动化的外壳脚本方面的专业知识
深入了解Linux文件系统和目录结构
熟练管理和监视过程
了解网络概念和配置
了解权限和安全设置
具有包装管理和安装的经验
使用Linux命令的文本处理方面的强大技能
有效地使用和操纵壳变量的能力
熟练使用正则表达式进行模式匹配和文本操作

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Linux Shell Online Test?

Linux Shell
Linux Shell是指用户可以与操作系统进行交互并控制操作系统的命令行接口。它允许用户执行命令，管理文件和进程并执行各种管理任务。
命令行
命令行是基于文本的接口，用户可以在其中输入命令以交互使用计算机系统。与图形用户界面相比，它提供了更大的灵活性和控制权，这对于管理和管理Linux系统至关重要。
shell scrippting
shell shell脚本涉及使用shell语言编写和执行脚本，允许Linux系统任务的自动化和自定义。它使用户能够创建复杂的命令序列，并有效地执行重复的任务。
Linux文件系统
Linux文件系统将文件和目录存储在Linux系统上。了解文件系统结构并知道如何导航，创建，修改和管理文件和目录对于有效的系统管理至关重要。
过程管理
流程管理涉及监视和控制运行运行Linux系统上的过程。该技能包括诸如启动，停止和优先级流程之类的任务，以及管理系统资源和理解过程状态。
Linux中的网络
Linux中的网络是指配置和Linux系统上网络连接和协议的管理。它包括任务，例如设置网络界面，配置IP地址，管理路由表以及对网络连接的故障排除。
权限和安全性
Linux中的权限和安全性涉及管理访问权限的权利文件，目录和系统资源。这包括设置文件权限，管理用户和组权限，实施安全策略，并确保系统免受未经授权的访问和潜在威胁。
软件包管理
Linux中包含软件的软件包管理软件包，包括安装，更新和拆卸。 Linux发行版使用软件包经理来处理依赖项，确保系统稳定性并为用户提供简单的软件管理。
文本处理
Linux中的文本处理涉及使用命令 - 线工具和脚本。它包括诸如搜索，替换，排序，过滤和格式化文本文件之类的任务，这对于诸如日志文件分析和数据处理等任务至关重要。
shell变量
shell变量用于在壳环境中存储和操纵数据。它们允许用户存储值，执行计算并控制脚本和命令的行为。了解壳变量对于有效的外壳脚本和系统管理至关重要。
正则表达式
正则表达式是用于搜索，匹配和操纵文本数据的强大模式。它们提供了执行复杂字符串操作的灵活和有效的方法，使其成为数据验证，文本解析和模式匹配等任务的重要技能。
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for 外壳在线评估 to be based on.
Linux文件权限
Linux文件系统层次结构
Linux命令行基础知识
外壳脚本结构
外壳脚本中的有条件陈述
在外壳脚本中循环
文件输入/输出
模式匹配
命令替换
壳算术
流程管理 - 启动，停止和监视过程
过程信号和工作控制
管理网络接口
配置DNS
防火墙配置
SSH和远程访问
用户和小组管理
访问控制列表
加密和解密文件
包装安装
包裹拆除
更新和升级软件包
壳命令行编辑
管道和重定向
正则表达式 - 语法和用法
匹配模式
文字提取和操纵
文本更换
文本排序和过滤
外壳变量 - 环境和用户定义
可变替代
可变扩展
脚本输入和输出
命令行参数
错误处理
脚本调试
脚本文档
命令行工具 - SED，AWK，GREP
文件压缩和归档
系统监控
系统信息和硬件帮助
管理系统服务
备份还原
贝壳脚本最佳实践
自动化和任务计划
正则表达式 - 高级模式
命令行文本编辑器
正则表达式 - lookaheads和lookbehinds
外壳变量 - 数组
文件权限 - 高级
软件包依赖关系管理
系统日志和日志旋转
系统管理任务
文件系统导航
过程环境和变量
管理文件系统和分区
符号和硬链接
归档和压缩工具
系统资源监视
引导过程和启动脚本
文本处理工具

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What roles can I use the Linux Shell Online Test for?

Linux管理员
DevOps工程师
系统管理员
外壳脚本开发人员
软件工程师
它支持技术人员
云开发人员

How is the Linux Shell Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like