awk、grep、sed是linux操作文本的三大利器，合称文本三剑客，也是必须掌握的linux命令之一。三者的功能都是处理文本，但侧重点各不相同，其中属awk功能最强大，但也最复杂。grep更适合单纯的查找或匹配文本，sed更适合编辑匹配到的文本，awk更适合格式化文本 ...

Once you’ve gained a solid understanding of Linux and mastered the various commands available, your next big win comes in the form of shell functions. Code wrapped in a function can be reused by your ...

Hey all,<br>I'm working on some scripts to grade assignments for a UNIX class at my college. basicly what I'm trying to do is grep the student's .bash_history to make sure the students used certian ...

I am very new to c-shell and I've skimmed several tutorials but I cannot for the life of me figure out how to do this simple, simple task with csh. I am looking for entry points and/or subroutines and ...

While other scripting languages have gained popularity, Perl remains a popular choice due to its robust text processing capabilities. It's easy to create "one-liners," or very short scripts, that can ...