答:一个Shell脚本是一个文本文件,包含一个或多个命令。作为系统管理员,我们经常需要使用多个命令来完成一项任务,我们可以添加这些所有命令在一个文本文件(Shell脚本)来完成这些日常工作任务。 Q:2 什么是默认登录shell,如何改变指定用户的登录shell 答:在Linux操作系统,“/bin/bash”是默认登录shell,是在创建用户时分...
This article contains a few interview questions related to Unix or Linux Shell Scripting and command-line stuff. Some of them could be commonly asked, most of them are not so. For questions for which we have a detailed explanation, a link would be provided after the answer for detailed refe...
via:http://www.tecmint.com/interview-questions-on-shell-scripting/ 译者:GOLinux校对:wxy 本文地址:http://linux.cn/article-3101-1.html
49. What is the difference between environment and shell variables? Environment variables exist for all programs, shells, applications, daemons, and so forth. Shell variables only exist within the context of a shell. For example, the user can define a shell variable to set the editor. The va...
Linux Basic Interview Questions Hi Everyone ! Will see Linux interview questions in this post. Many of them are getting difficulty on finding their job in Linux, without knowing the scenario-based question in Linux. So, we decided to help by sharing some Linux interview questions. ...
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after all - but a lot of it was originally done as shell-script around some core helper programs. Over the years, most of that shell scripting has gone away, and it means that I can apply patch-bombs from Andrew Morton even faster than I could originally. Which is very gratifying, as...
Basically, shell splits the value of variable as what is the value is IFS special variable. Since IFS has space, tab and newline, the variables will get split with any/all of them as a delimiter. 4. Variable with comma separated values: ...
adduser user_name --shell=/bin/false --no-create-home 在使用systemd的系统上,如何显示日志? journalctl 调试 你正在使用什么进行故障排除和调试网络问题? dstat -t非常适合辨别网络和磁盘问题。netstat -tnlaup可用于查看哪些进程在哪些端口上运行。lsof -i -P可以用于与netstat相同的目的。ngrep -d any metaf...
Linux Firewall Iptables Interview Questions –New Update Basic Interview Questions on Linux Networking – Part 1 –New Update Section 19: Shell Scripting Interview Questions Useful ‘Interview Questions and Answers’ on Linux Shell Scripting Practical Interview Questions and Answers on Linux Shell Scriptin...