Read Also<\/strong>:\u00a0A \u2013 Z Linux Commands \u2013 Overview with Examples<\/a><\/p>\n Remembering Linux commands and their usage is not easy, especially for new Linux users. In this article, we will share 5 command-line tools for remembering Linux commands.<\/p>\n Bash<\/strong>\u00a0records all unique commands executed by users on the system in a history file. Each user\u2019s bash history file is stored in their home directory (e.g.\u00a0\/home\/tecmint\/.bash_history<\/strong>\u00a0for user\u00a0tecmint)<\/strong>. A user can only view his\/her own history file content and root can view the bash history file for all users on a Linux system.<\/p>\n To view your bash history, use the\u00a0history command<\/a>\u00a0as shown.<\/p>\n View User History Command<\/p>\n<\/div>\n To fetch a command from bash history, press the\u00a0 This bash feature is one of the many ways of easily remembering Linux commands. You can find more examples of the\u00a0history command<\/strong>\u00a0in these articles:<\/p>\n Fish<\/a>\u00a0is a modern, powerful, user-friendly, feature-rich and interactive shell which is compatible to\u00a0Bash<\/strong>\u00a0or\u00a0Zsh<\/strong>. It supports automatic suggestions of file names and commands in the current directory and history respectively, which helps you to easily remember commands.<\/p>\n In the following screenshot, the command \u201cuname -r<\/strong>\u201d is in the bash history, to easily remember it, type the later\u00a0 Fish \u2013 Friendly Interactive Shell<\/p>\n<\/div>\n Fish is a fully-fledged shell program with a wealth of features for you to remember Linux commands in a straightforward manner.<\/p>\n Apropos<\/strong>\u00a0searches and displays the name and short description of a keyword, for instance a command name, as written in the man page of that command.<\/p>\n Read Also<\/strong>:\u00a05 Ways to Find a Linux Command Description and Location<\/a><\/p>\n If you do not know the exact name of a command, simply type a keyword (regular expression) to search for it. For example if you are searching for the description of\u00a0docker-commit<\/strong>\u00a0command, you can type\u00a0docker<\/strong>, apropos will search and list all commands with the string docker, and their description as well.<\/p>\n Find Linux Command Description<\/p>\n<\/div>\n You can get the description of the exact keyword or command name you have provided as shown.<\/p>\n This is another useful way of remembering Linux commands, to guide you on what command to use for a specific task or if you have forgotten what a command is used for. Read on, because the next tool is even more interesting.<\/p>\n Explain Shell<\/a>\u00a0is a small Bash script that explains shell commands. It requires the\u00a0curl<\/strong>\u00a0program and a working internet connection. It displays a command description summary and in addition, if the command includes a flag, it also shows a description of that flag.<\/p>\n To use it, first you need to add the following code at the bottom of you\u00a0 Save and close the file, then source it or open a fresh terminal windows.<\/p>\n Assuming you have forgotten what the command\u00a0\u201capropos -a\u201d<\/strong>\u00a0does, you can use explain command to help you remember it, as shown.<\/p>\n Show Linux Command Manual<\/p>\n<\/div>\n This script can explain to you any shell command effectively, thus helping you remember Linux commands. Unlike the explain shell script, the next tool brings a distinct approach, it shows usage examples of a command.<\/p>\n Cheat<\/a>\u00a0is a simple, interactive command-line cheat-sheet program which shows use cases of a Linux command with a number of options and their short understandable function. It is useful for Linux newbies and sysadmins.<\/p>\n To install and use it, check out our complete article about Cheat program and its usage with examples:<\/p>\n That\u2019s all! In this article, we have shared 5 command-line tools for remembering Linux commands. If you know any other tools for the same purpose that are missing in the list above, let us know via the feedback form below.<\/p>\n1. Bash History<\/h3>\n
$ history \r\n<\/pre>\n
![\"View](\"https:\/\/www.tecmint.com\/wp-content\/uploads\/2018\/06\/View-User-History-Command.png\")
<\/a><\/p>\nUp<\/code>\u00a0arrow key continuously to search through a list of all unique commands that you run previously. If you have skipped the command your looking for or failed to get it, use the\u00a0Down<\/code>\u00a0arrow key to perform a reverse search.<\/p>\n\n
2. Friendly Interactive Shell (Fish)<\/h3>\n
\u201cu\u201d<\/code>\u00a0or\u00a0\u201cun\u201d<\/code>\u00a0and fish will auto-suggest the complete command. If the command auto-suggested is the one you wish to run, use the\u00a0Right<\/strong>\u00a0arrow key to select it and run it.<\/p>\n![\"Fish](\"https:\/\/www.tecmint.com\/wp-content\/uploads\/2018\/06\/run-fish-shell.png\")
<\/a><\/p>\n3. Apropos Tool<\/h3>\n
$ apropos docker\r\n<\/pre>\n
![\"Find](\"https:\/\/www.tecmint.com\/wp-content\/uploads\/2018\/06\/Find-Linux-Command-Description.png\")
<\/a><\/p>\n$ apropos docker-commit\r\nOR\r\n$ apropos -a docker-commit\r\n<\/pre>\n
4. Explain Shell Script<\/h3>\n
$HOME\/.bashrc<\/code>\u00a0file.<\/p>\n# explain.sh begins\r\nexplain () {\r\n if [ \"$#\" -eq 0 ]; then\r\n while read -p \"Command: \" cmd; do\r\n curl -Gs \"https:\/\/www.mankier.com\/api\/explain\/?cols=\"$(tput cols) --data-urlencode \"q=$cmd\"\r\n done\r\n echo \"Bye!\"\r\n elif [ \"$#\" -eq 1 ]; then\r\n curl -Gs \"https:\/\/www.mankier.com\/api\/explain\/?cols=\"$(tput cols) --data-urlencode \"q=$1\"\r\n else\r\n echo \"Usage\"\r\n echo \"explain interactive mode.\"\r\n echo \"explain 'cmd -o | ...' one quoted command to explain it.\"\r\n fi\r\n}\r\n<\/pre>\n$ source .bashrc\r\n<\/pre>\n
$ explain 'apropos -a'\r\n<\/pre>\n
![\"Show](\"https:\/\/www.tecmint.com\/wp-content\/uploads\/2018\/06\/run-explain-shell-script.png\")
<\/a><\/p>\n5. Cheat Program<\/h3>\n
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