Rscript Run the commands 'Rscript' and 'R CMD' Rscript_call Call a function in a new R session via 'Rscript()' alnum_id Generate ID strings attr Obtain an attribute of an object without partial matching base64_encode Encode/decode data into/from base64 encoding. base64_uri Generate the Data URI for a file base_pkgs Get base R package names bg_process Start a background process broken_packages Find out broken packages and reinstall them bump_version Bump version numbers cache_rds Cache the value of an R expression to an RDS file crandalf_check Submit check jobs to crandalf csv_options Parse comma-separated chunk options decimal_dot Evaluate an expression after forcing the decimal point to be a dot del_empty_dir Delete an empty directory dir_create Create a directory recursively by default dir_exists Test the existence of files and directories divide_chunk Divide chunk options from the code chunk body do_once Perform a task once in an R session download_cache Download a file from a URL and cache it on disk download_file Try various methods to download a file embed_file Embed a file, multiple files, or directory on an HTML page env_option Retrieve a global option from both 'options()' and environment variables existing_files Find file paths that exist exit_call Call 'on.exit()' in a parent function file_ext Manipulate filename extensions file_string Read a text file and concatenate the lines by "\n" format_bytes Format numbers of bytes using a specified unit from_root Get the relative path of a path in a project relative to the current working directory github_releases Get the tags of Github releases of a repository grep_sub Perform replacement with 'gsub()' on elements matched from 'grep()' gsub_file Search and replace strings in files in_dir Evaluate an expression under a specified working directory install_dir Install a source package from a directory install_github An alias of 'remotes::install_github()' is_abs_path Test if paths are relative or absolute is_ascii Check if a character vector consists of entirely ASCII characters is_blank Test if a character vector consists of blank strings is_sub_path Test if a path is a subpath of a dir is_web_path Test if a path is a web path is_windows Test for types of operating systems magic_path Find a file or directory under a root directory mark_dirs Mark some paths as directories msg_cat Generate a message with 'cat()' native_encode Try to use the system native encoding to represent a character vector news2md Convert package news to the Markdown format normalize_path Normalize paths numbers_to_words Convert numbers to English words optipng Run OptiPNG on all PNG files under a directory parse_only Parse R code and do not keep the source pkg_attach Attach or load packages, and automatically install missing packages if requested proc_kill Kill a process and (optionally) all its child processes process_file Read a text file, process the text with a function, and write the text back proj_root Return the (possible) root directory of a project prose_index Find the indices of lines in Markdown that are prose (not code blocks) protect_math Protect math expressions in pairs of backticks in Markdown raw_string Print a character vector in its raw form read_all Read all text files and concatenate their content read_bin Read all records of a binary file as a raw vector by default read_utf8 Read / write files encoded in UTF-8 record Run R code and record the results relative_path Get the relative path of a path relative to a directory rename_seq Rename files with a sequential numeric prefix rest_api Get data from a REST API retry Retry calling a function for a number of times rev_check Run 'R CMD check' on the reverse dependencies of a package rstudio_type Type a character vector into the RStudio source editor same_path Test if two paths are the same after they are normalized session_info An alternative to sessionInfo() to print session information set_envvar Set environment variables shrink_images Shrink images to a maximum width split_lines Split a character vector by line breaks split_source Split source lines into complete expressions strict_list Strict lists strip_html Strip HTML tags submit_cran Submit a source package to CRAN system3 Run 'system2()' and mark its character output as UTF-8 if appropriate tinify Use the Tinify API to compress PNG and JPEG images tojson A simple JSON serializer tree Turn the output of 'str()' into a tree diagram try_error Try an expression and see if it throws an error try_silent Try to evaluate an expression silently upload_ftp Upload to an FTP server via 'curl' url_accessible Test if a URL is accessible url_filename Extract filenames from a URLs valid_syntax Check if the syntax of the code is valid yaml_body Partition the YAML metadata and the body in a document yaml_load Read YAML data