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  1.  
  2.  cal
  3.  
  4.  echo "Username: $USER"
  5.  echo "Home Directory: $HOME"
  6.  
  7.  echo "Terminal Name: $TERM"
  8.  echo "Terminal Type: $(tty)"
  9.  
  10.  echo "Machine Name: $(hostname)"
  11.  
  12.  echo "Number of Logged-in Users: $(who | wc -l)"
  13.  echo "List of Users:"
  14.  who
  15. read -p "Enter the file name: " filename
  16. if [ -f "$filename" ]; then
  17. cat "$filename"
  18. else
  19. echo "File does not exist or is not a regular file."
  20. fi
Success #stdin #stdout 0.02s 5300KB
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stdin
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Standard input is empty
stdout
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     April 2025       
Su Mo Tu We Th Fr Sa  
       1  2 _ _3  4  5  
 6  7  8  9 10 11 12  
13 14 15 16 17 18 19  
20 21 22 23 24 25 26  
27 28 29 30           
                      
Username: 
Home Directory: /home/mXe7Xi
Terminal Name: dumb
Terminal Type: not a tty
Machine Name: checker
Number of Logged-in Users: 0
List of Users:
File does not exist or is not a regular file.
https://ideone.com/7TcITz
language:
Bash (bash 5.0.3)
created:
1 day ago
visibility:
public

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