Answer1215

摘要： Compse commands with pipe # List all folders and files in current dir % ls -l total 56 -rw-r--r-- 1 zwt staff 51 May 16 22:35 data.txt -rwxr-xr-x 1 zw 阅读全文

摘要： Write to a file >, >> Append content at the beginning of the file. echo whatever > hello.txt echo Hello world >> hello.txt cat hello.txt # whatever # 阅读全文

摘要： While The while loop executes a block of code as long as a specified condition is true. while [ condition ]; do commands done Example: #!/bin/zsh coun 阅读全文

摘要： The "Set Methods" proposal introduces 7 new methods to JavaScript/ECMAScript: union(setB): Returns a new Set containing all elements from the original 阅读全文

摘要： If The if statement is used to execute commands based on a condition. if [ condition ]; then commands fi Example: vim example.sh #!/bin/zsh echo "Ente 阅读全文

摘要： Commands: export: Set environment variables. env: View environment variables. echo: Display environment variables. Common Environment Variables: PATH: 阅读全文

摘要： Understanding File Permissions: File permissions in Unix-like systems determine who can read, write, or execute a file. They are represented as a comb 阅读全文

摘要： Finding elements starting from the end of an array has gotten a lot easier with the introduction of the at, findLast, and findLastIndex methods! With  阅读全文

摘要： Array Grouping is the new feature of JavaScript/ECMAScript, which splits an array (or, generally, an iterable), into smaller sub-arrays. Grouping is d 阅读全文

摘要： The sed command is a stream editor used for filtering and transforming text. sed 'command' file Create and view the initial content of sample.txt: ech 阅读全文