just 为您提供一种保存和运行项目特有命令的便捷方式
入门
简单的 justfile
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| #!/usr/bin/env just --justfile
hello:
echo "Hello World!"
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带参数的配方
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| filter PATTERN:
echo {{PATTERN}}
email address='master@example.com':
echo {{address}}
test triple=(arch() + "-unknown-unknown"):
./test {{triple}}
backup +FILES:
scp {{FILES}} me@example.com
commit MESSAGE *FLAGS:
git commit {{FLAGS}} -m "{{MESSAGE}}"
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变量和子变量
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| version := "0.2.7"
tardir := "awesomesauce-" + version
tarball := tardir + ".tar.gz"
test:
echo {{version}}
$ just --set version 1.1.0
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默认配置
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| default: lint build test
default:
@just --list
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命令的环境变量
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| export RUST_BACKTRACE := "1"
test:
cargo test
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backtick-从评估中捕获输出
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| JAVA_HOME := `jbang jdk home 11`
stuff := \```
foo="hello"
echo $foo "world"
\```
done BRANCH=`git rev-parse --abbrev-ref HEAD`:
git checkout master
sloc:
@echo "`wc -l *.c` lines of code"
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注意： 上面示例中 \` 没有转义过来
别名
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| alias t := test
alias c := check
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带有命令 env 变量配置
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|
hello $name:
echo $name
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设置
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| set shell := ["zsh", "-cu"]
set dotenv-load := true
serv:
echo "$DATABASE_ADDRESS from .env"
set positional-arguments := true
foo:
echo $0
echo $1
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配置依赖性-之前、之后和周围
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|
b: a && c d
b:
echo 'B start!'
just a
echo 'B end!'
default: (build "main")
build target:
@echo 'Building {{target}}...'
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Just 函数
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| hello name:
echo {{os()}}
echo {{uppercase(name)}}
# 函数类别
* 系统信息
* 系统信息
* Justfile 和 Justfile目录
* 字符串操纵
* 路径操纵
# String contact: (key + ":" + value)
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字符串-用双引号转义
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| tring-with-tab := "\t"
string-with-newline := "\n"
escapes := '\t\n\r\"\\'
x := '''
foo
bar
'''
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命令注释：quiet(@)、suppress(-)、invert(!)
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| hello:
@ echo "command will not be echoed"
- echo "ignore none-zero exit status and continue"
@hello2:
echo "command will not be echoed"
hello3:
! git branch | grep '* master'
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条件表达式：if、loop 和 while
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| # 正则表达匹配
fo := if "hi" =~ 'h.+' { "match" } else { "mismatch" }
test:
if true; then echo 'True!'; fi
for file in `ls .`; do echo $file; done
while `server-is-dead`; do ping -c 1 server; done
foo bar:
echo {{ if bar == "bar" { "hello" } else { "bye" } }}
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Just 命令行
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$ just hello param1
$ just --list
$ just --summary
just --show test
$ just --choose
just --completions zsh
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其他语言的配置
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| bash-test:
set -euxo pipefail
hello='Yo'
echo "$hello from bash!"
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私人配置 - 名称以开头 _
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| test: _test-helper
./bin/test
_test-helper:
./bin/super-secret-test-helper-stuff
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注意
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change-working-dir:
cd bar && pwd
if true; then \
echo 'True!'; \
fi
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作为 shell 别名的配置
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| for recipe in `just -f ~/.justfile --summary`; do
alias $recipe="just -f ~/.justfile -d. $recipe"
done
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IDE 集成
