answer:Sure! I can add a `move-file` function that takes two arguments: the source file path and the destination directory path. Here's an updated version of the library: ``` ;; file-ops.scm ;; File and directory operations library for Scheme ;; Helper functions (define (file-exists? filename) "Check if a file exists." (let ((port (open-input-file filename))) (and port (close-port port) #t))) (define (dir-exists? dirname) "Check if a directory exists." (and (file-exists? dirname) (directory-exists? dirname))) (define (list-dir dirname) "List all files and directories in a directory." (let loop ((lst (directory-list dirname)) (acc '())) (if (null? lst) (reverse acc) (let ((name (car lst)) (path (string-append dirname "/"))) (loop (cdr lst) (cons (if (directory-exists? (string-append path name)) (cons name (list-dir (string-append path name))) name) acc)))))) ;; Public functions (define (file-size filename) "Get the size of a file." (if (file-exists? filename) (file-size* filename) (error "File not found: ~A" filename))) (define (file-size* filename) (let ((port (open-input-file filename))) (let loop ((acc 0)) (let ((buf (make-string 4096))) (let ((n (read-port port buf))) (if (eof-object? n) (close-port port) (loop (+ acc n)))))))) (define (file-date filename) "Get the modification date of a file." (if (file-exists? filename) (file-date* filename) (error "File not found: ~A" filename))) (define (file-date* filename) (let ((attributes (file-attributes filename))) (list-ref attributes 5))) (define (file-type filename) "Get the type of a file (file, dir, or link)." (if (file-exists? filename) (case (car (file-attributes filename)) ((#b1000) 'file) ((#b0100) 'dir) ((#b0010) 'link)) (error "File not found: ~A" filename))) (define (create-file filename) "Create a new file." (if (file-exists? filename) (error "File already exists: ~A" filename) (let ((port (open-output-file filename))) (close-port port) #t))) (define (delete-file filename) "Delete an existing file." (if (file-exists? filename) (delete-file* filename) (error "File not found: ~A" filename))) (define (delete-file* filename) (delete-file-or-directory filename)) (define (rename-file oldname newname) "Rename an existing file." (if (file-exists? oldname) (rename-file* oldname newname) (error "File not found: ~A" oldname))) (define (rename-file* oldname newname) (if (file-exists? newname) (error "File already exists: ~A" newname) (rename-file-or-directory oldname newname))) (define (copy-file source destination) "Copy an existing file." (if (file-exists? source) (copy-file* source destination) (error "File not found: ~A" source))) (define (copy-file* source destination) (if (file-exists? destination) (error "File already exists: ~A" destination) (let* ((in-port (open-input-file source)) (out-port (open-output-file destination))) (let loop () (let ((buf (make-string 4096))) (let ((n (read-port in-port buf))) (if (eof-object? n) (close-port in-port) (begin (write-port out-port buf 0 n) (loop)))))))) (define (create-dir dirname) "Create a new directory." (if (dir-exists? dirname) (error "Directory already exists: ~A" dirname) (make-directory dirname #t))) (define (delete-dir dirname) "Delete an existing directory." (if (dir-exists? dirname) (delete-dir* dirname) (error "Directory not found: ~A" dirname))) (define (delete-dir* dirname) (delete-file-or-directory dirname)) (define (rename-dir oldname newname) "Rename an existing directory." (if (dir-exists? oldname) (rename-file* oldname

answer:Sure! I can add a `file-permissions` function that takes a file or directory path as an argument and returns its permissions as a string. Here's an updated version of the library: ``` ;; file-ops.scm ;; File and directory operations library for Scheme ;; Helper functions (define (file-exists? filename) "Check if a file exists." (let ((port (open-input-file filename))) (and port (close-port port) #t))) (define (dir-exists? dirname) "Check if a directory exists." (and (file-exists? dirname) (directory-exists? dirname))) (define (list-dir dirname) "List all files and directories in a directory." (let loop ((lst (directory-list dirname)) (acc '())) (if (null? lst) (reverse acc) (let ((name (car lst)) (path (string-append dirname "/"))) (loop (cdr lst) (cons (if (directory-exists? (string-append path name)) (cons name (list-dir (string-append path name))) name) acc)))))) ;; Public functions (define (file-size filename) "Get the size of a file." (if (file-exists? filename) (file-size* filename) (error "File not found: ~A" filename))) (define (file-size* filename) (let ((port (open-input-file filename))) (let loop ((acc 0)) (let ((buf (make-string 4096))) (let ((n (read-port port buf))) (if (eof-object? n) (close-port port) (loop (+ acc n)))))))) (define (file-date filename) "Get the modification date of a file." (if (file-exists? filename) (file-date* filename) (error "File not found: ~A" filename))) (define (file-date* filename) (let ((attributes (file-attributes filename))) (list-ref attributes 5))) (define (file-type filename) "Get the type of a file (file, dir, or link)." (if (file-exists? filename) (case (car (file-attributes filename)) ((#b1000) 'file) ((#b0100) 'dir) ((#b0010) 'link)) (error "File not found: ~A" filename))) (define (file-permissions filename) "Get the permissions of a file or directory." (if (file-exists? filename) (file-permissions* filename) (error "File not found: ~A" filename))) (define (file-permissions* filename) (let ((attributes (file-attributes filename))) (let ((perms (list-ref attributes 1))) (string-append (if (bitwise-and #o400 perms) "r" "-") (if (bitwise-and #o200 perms) "w" "-") (if (bitwise-and #o100 perms) "x" "-") (if (bitwise-and #o040 perms) "r" "-") (if (bitwise-and #o020 perms) "w" "-") (if (bitwise-and #o010 perms) "x" "-") (if (bitwise-and #o004 perms) "r" "-") (if (bitwise-and #o002 perms) "w" "-") (if (bitwise-and #o001 perms) "x" "-"))))) (define (create-file filename) "Create a new file." (if (file-exists? filename) (error "File already exists: ~A" filename) (let ((port (open-output-file filename))) (close-port port) #t))) (define (delete-file filename) "Delete an existing file." (if (file-exists? filename) (delete-file* filename) (error "File not found: ~A" filename))) (define (delete-file* filename) (delete-file-or-directory filename)) (define (rename-file oldname newname) "Rename an existing file." (if (file-exists? oldname) (rename-file* oldname newname) (error "File not found: ~A" oldname))) (define (rename-file* oldname newname) (if (file-exists? newname)

answer:1. Fire and gas detectors: Advanced detection systems such as heat, smoke or gas detectors are fitted at various points on oil rigs to track any signs of smoke, gas, or heat. 2. Fire and blast walls: Multiple levels of fire-resistant walls are built between various parts of oil rigs to help contain the spread of fire. 3. Fire suppression systems: Oil rigs employ automatic fire suppression systems such as firewater monitors, sprinkler systems, and foam extinguishing systems. 4. Emergency response drill: Oil rig personnel undergo regular emergency drills and training which helps them to handle the fire outbreak if it happens. 5. Equipment inspections: Rig operators ensure that all equipment on the rig is up to par and in good running condition, which helps to avoid equipment malfunction that could lead to the outbreak of the fire. 6. Installation of an escape system: Rigs must have an efficient escape system, including evacuating crew and nonessential staff to safety zones on board the rig or life rafts. 7. Smoking restrictions: Smoking is prohibited on oil rigs, and smoking areas are designated in a specific location. 8. Electrical safety: Implementing an electrical safety program can minimize electrical hazards and possible fires. 9. Regular maintenance: Regular servicing and maintenance of machinery, equipment, and electrical systems are conducted to prevent potential equipment failure which could lead to fire. 10. Safety policies: Rigs have set safety policies, including Standard Operating Procedures and a Safety Management System that act as guidelines for ensuring safety on the rig.

answer:I don't have the latest information on safety standards but in general, the safety measures for oil rigs are similar across the industry, but the specific safety standards followed can vary by company and region. It is recommended that all oil companies and their contractors follow the same safety measures and guidelines identified by reputable regulatory agencies to ensure that workers are protected regardless of the location of the oil rig.