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Configure file : /etc/sercurity/limit.conf e.g #@student hard nproc 20 /member of student user group can maximally have 20 running process #@faculty s 阅读全文
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0) check user info id <username> 1) users / groups are owners of file or directory bsc@ubuntu:/home$ ls -lttotal 8 drwxr-xr-x 25 bsc yu 4096 Apr 15 13 阅读全文
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to access the configure file : sudo visudo https://www.garron.me/en/linux/visudo-command-sudoers-file-sudo-default-editor.html This line means: The ro 阅读全文
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Syntax: Example:Consider the below text file as an input. Sample Commands Output : Here the “s” specifies the substitution operation. The “/” are deli 阅读全文
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0) it is different from globbing e.g grep 'a*' b* // b* is globbing , indidcates any files start with letter b, a* is reg expression 1) use single quo 阅读全文
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There are 2 types of links that you can create within Linux: Hard Links Symbolic Links https://medium.com/@krisbredemeier/the-difference-between-hard- 阅读全文
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Git detatached head means you are not in the latest commit on your branch. What is Head in Git. It’s a special Git term that often means “the most rec 阅读全文
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1 Version Centos is free version of RedHat enterprise Ubuntu builds on the Debian architecture 2 Common command `touch <filename>` to create empty fil 阅读全文
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Bash Learing Git Repo: https://github.com/anyu686/BashLearning 阅读全文
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Jump beginning of Line:0 Jump to beinnging of line and run insert mode: I Jump to end of line and run insert mode : A Jump to end of file : G Show for 阅读全文