211 实验
001 Text Display
002 Screen Clearing
003 Content Listing
004 Directory Changing
005 Directory Displaying
006 Directory Creating
007 File Creating/Updating
008 File Copying
009 File Moving/Renaming
010 File Removing
011 Link Creating
012 File Concatenating
013 File Beginning Display
014 File End Display
015 Text Counting
016 Text Cutting
017 File Paging
018 File Scrolling
019 Ownership Changing
020 Permission Modifying
021 Wildcard Character
022 File Searching
023 File Locating
024 Command Locating
025 File/Command Finding
026 Pattern Searching
027 Stream Editing
028 Text Processing
029 Text Sorting
030 Duplicate Filtering
031 Character Translating
032 Line Feed Filtering
033 Line Merging
034 File Joining
035 File Comparing
036 Common Line Comparison
037 Patch Applying
038 Text Editing
039 File Difference Viewing
040 Simple Text Editing
041 Graphical Text Editing
042 Archiving
043 Compressing
044 Decompressing
045 Arithmetic Calculations
046 Logic Operations
047 Text Columnizing
048 Condition Testing
049 Command Building
050 Directory Tree Display
051 Command Assistance
052 Manual Access
053 Line Numbering
054 Input Reading
055 Text Formatting
056 Execution Delaying
057 Variable Declaring
058 Script Executing
059 Shell Exiting
060 Secure Connecting
065 Networking Utility
067 Network Monitoring
068 Network Testing
070 User Adding
071 User Removing
072 User Modifying
073 Password Changing
074 Privilege Granting
075 User Switching
076 Group Displaying
077 Group Adding
078 Group Removing
079 Group Changing
080 User Identifying
081 Environment Managing
082 User/Group ID Displaying
083 Shell Setting
084 Variable Exporting
085 Variable Unsetting
086 Disk Space Reporting
087 File Space Estimating
088 File System Mounting
089 Command Repeating
090 Job Scheduling
091 System Information Displaying
092 Hostname Managing
093 Process Displaying
094 Task Displaying
095 Memory Reporting
096 Date/Time Displaying
097 Command Timing
098 File Converting/Copying
099 Service Managing
100 URL Data Transferring
101 Non-interactive Downloading
102 Package Handling
103 Python Package Installing
104 Job Managing
105 Background Running
106 Job Foregrounding
107 Process Terminating
109 Pattern-Based Killing
110 Process Waiting
111 Background Management
112 Output Multiplexing
113 Data Piping
114 I/O Redirecting
