终极 Linux 命令速查表

Print current working directory absolute path

List all files including hidden dotfiles in detailed format

Navigate up one parent directory level

Jump directly to user home directory

Display directory structure as a visual tree up to 2 levels

Locate executable binary path in system PATH

Create empty file or update timestamp

Create parent and sub-directories in a single command

Copy directory recursively with all subfolders

Move or rename files and directories

Concatenate and print file contents to terminal stdout

Output first 20 lines of a file

Output last 20 lines and follow live file growth

Count total number of lines in a file

Case-insensitive search for string pattern in file

Recursively search all files with line numbers

Recursively locate files by wildcard filename pattern

Stream editor search and replace all instances of string

Extract and print specific space-delimited columns

Owner: Read/Write/Execute (7); Others: Read/Execute (5)

Owner: Read/Write (6); Others: Read-Only (4)

Owner: Read/Write (6); Others: No access (0)

Change owner user and group of file or directory

Interactive real-time process manager and system metrics

Snapshot of all active processes running on the OS

Display total, used, and available RAM in human-readable GB/MB

Print Linux kernel version, architecture, and hostname

Create gzipped tarball archive of target directory

Extract gzipped tarball archive into current directory

Compress file into .gz format and replace original

Decompress .gz file back to original file