fish 命令详解

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

fish 命令安装：

-bash/zsh: fish command not found

#Debian
apt-get install fish

#Ubuntu
apt-get install fish

#Alpine
apk add fish

#Arch Linux
pacman -S fish

#Kali Linux
apt-get install fish

#Fedora
dnf install fish

#OS X
brew install fish

#Raspbian
apt-get install fish

#Docker
docker run cmd.cat/fish fish

对于 CentOS 8，请以根用户 root 运行下面命令：
cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/shells:fish:release:3/CentOS_8/shells:fish:release:3.repo
yum install fish

对于 CentOS 7，请以根用户 root 运行下面命令：
cd /etc/yum.repos.d/
wget https://download.opensuse.org/repositories/shells:fish:release:3/CentOS_7/shells:fish:release:3.repo
yum install fish

fish 命令补充说明：

fish 命令，在键入时会执行语法高亮显示。默认情况下，无效命令显示为红色。

有句话这样说：

fish 和 zsh 有个共同点是根据历史输入自动补全，只要是历史有输入的，都会有记录有提示，对于一些很长的命令，超级爽，再也不用手动复制粘贴了。

fish 是 "the friendly interactive shell" 的简称，最大特点就是方便易用。很多其他 Shell 需要配置才有的功能，Fish 默认提供，不需要任何配置。

fish 命令语法：

fish [-h] [-v] [-c command] [FILE [ARGUMENTS...]]

fish 命令选项：

· -c or --command=COMMANDS evaluate the specified commands instead of reading from the commandline, passing any additional positional arguments via $argv. Note  that,  unlike  other
         shells, the first argument is not the name of the program ($0), but simply the first normal argument.

· -C or --init-command=COMMANDS evaluate the specified commands after reading the configuration, before running the command specified by -c or reading interactive input

· -d or --debug=DEBUG_CATEGORIES enable debug output and specify a pattern for matching debug categories. See Debugging below for details.

· -o or --debug-output=DEBUG_FILE specify a file path to receive the debug output, including categories and fish_trace. The default is stderr.

· -i or --interactive specify that fish is to run in interactive mode

· -l or --login specify that fish is to run as a login shell

· -n or --no-execute do not execute any commands, only perform syntax checking

· -p  or  --profile=PROFILE_FILE when fish exits, output timing information on all executed commands to the specified file. This excludes time spent starting up and reading the con‐
 figuration.

· --profile-startup=PROFILE_FILE will write timing information for fish's startup to the specified file. This is useful to profile your configuration.

· -P or --private enables private mode, so fish will not access old or store new history.

· --print-rusage-self when fish exits, output stats from getrusage

· --print-debug-categories outputs the list of debug categories, and then exits.

· -v or --version display version and exit

· -f or --features=FEATURES enables one or more feature flags (separated by a comma). These are how fish stages changes that might break scripts.

The fish exit status is generally the exit status of the last foreground command.

fish 命令实例：

启动 fish 交互式 Shell：

fish

fish 执行一个命令：

fish -c "command"

fish 从文件运行命令：

fish file.fish

fish 检查文件中的语法错误：

fish --no-execute file.fish

显示 fish 版本信息并退出：

fish --version

fish 命令扩展阅读：

• fish shell - Finally, a command line shell for the 90s
• Fish shell 入门教程
• 用 Bash 脚本监控 Linux 上的内存使用情况详解
• ksh 命令
• fish 命令
• zsh 命令
• oh-my-zsh 命令
• Antigen详解
• dash 命令
• rbash 命令

fish 命令评论