shell-scripting

Name: shell-scripting
Author: chaterm

84installs12forks

How to install shell-scripting?

chaterm/terminal-skills/shell-scripting

$npx -y skills add chaterm/terminal-skills --skill shell-scripting

Installs into the current project.

Summary

Bash Shell 脚本编写

Files · 1

View on GitHub

SKILL.md

1	# Shell 脚本编写
2
3	## 概述
4	Bash 脚本编写、调试、最佳实践等技能。
5
6	## 基础语法
7
8	### 脚本结构
9	```bash
10	#!/bin/bash
11	# 脚本描述
12	# Author: name
13	# Date: 2024-01-01
14
15	set -euo pipefail # 严格模式
16
17	# 变量定义
18	VAR="value"
19	readonly CONST="constant"
20
21	# 主逻辑
22	main() {
23	echo "Hello, World!"
24	}
25
26	main "$@"
27	```
28
29	### 变量
30	```bash
31	# 定义变量
32	name="value"
33	name='literal value' # 不解析变量
34
35	# 使用变量
36	echo $name
37	echo ${name}
38	echo "${name}_suffix"
39
40	# 默认值
41	${var:-default} # 未设置时使用默认值
42	${var:=default} # 未设置时赋值并使用
43	${var:+value} # 已设置时使用 value
44	${var:?error message} # 未设置时报错
45
46	# 字符串操作
47	${#var} # 长度
48	${var:0:5} # 子串
49	${var#pattern} # 删除前缀
50	${var%pattern} # 删除后缀
51	${var/old/new} # 替换
52	```
53
54	### 数组
55	```bash
56	# 定义数组
57	arr=(a b c d)
58	arr[0]="first"
59
60	# 访问数组
61	${arr[0]} # 第一个元素
62	${arr[@]} # 所有元素
63	${#arr[@]} # 数组长度
64	${!arr[@]} # 所有索引
65
66	# 遍历数组
67	for item in "${arr[@]}"; do
68	echo "$item"
69	done
70	```
71
72	## 流程控制
73
74	### 条件判断
75	```bash
76	# if 语句
77	if [[ condition ]]; then
78	commands
79	elif [[ condition ]]; then
80	commands
81	else
82	commands
83	fi
84
85	# 条件表达式
86	[[ -f file ]] # 文件存在
87	[[ -d dir ]] # 目录存在
88	[[ -z "$var" ]] # 变量为空
89	[[ -n "$var" ]] # 变量非空
90	[[ "$a" == "$b" ]] # 字符串相等
91	[[ "$a" != "$b" ]] # 字符串不等
92	[[ $a -eq $b ]] # 数字相等
93	[[ $a -lt $b ]] # 小于
94	[[ $a -gt $b ]] # 大于
95
96	# 逻辑运算
97	[[ cond1 && cond2 ]] # 与
98	[[ cond1 \|\| cond2 ]] # 或
99	[[ ! cond ]] # 非
100	```
101
102	### 循环
103	```bash
104	# for 循环
105	for i in 1 2 3 4 5; do
106	echo $i
107	done
108
109	for i in {1..10}; do
110	echo $i
111	done
112
113	for ((i=0; i<10; i++)); do
114	echo $i
115	done
116
117	for file in *.txt; do
118	echo "$file"
119	done
120
121	# while 循环
122	while [[ condition ]]; do
123	commands
124	done
125
126	# 读取文件
127	while IFS= read -r line; do
128	echo "$line"
129	done < file.txt
130
131	# until 循环
132	until [[ condition ]]; do
133	commands
134	done
135	```
136
137	### case 语句
138	```bash
139	case "$var" in
140	pattern1)
141	commands
142	;;
143	pattern2\|pattern3)
144	commands
145	;;
146	*)
147	default commands
148	;;
149	esac
150	```
151
152	## 函数
153
154	### 定义函数
155	```bash
156	# 方式1
157	function_name() {
158	local var="local variable"
159	echo "Arguments: $@"
160	echo "First arg: $1"
161	echo "Arg count: $#"
162	return 0
163	}
164
165	# 方式2
166	function function_name {
167	commands
168	}
169
170	# 调用函数
171	function_name arg1 arg2
172
173	# 获取返回值
174	result=$(function_name)
175	```
176
177	### 常用函数模板
178	```bash
179	# 日志函数
180	log() {
181	local level=$1
182	shift
183	echo "[$(date '+%Y-%m-%d %H:%M:%S')] [$level] $*"
184	}
185
186	log INFO "This is info message"
187	log ERROR "This is error message"
188
189	# 错误处理
190	die() {
191	echo "ERROR: $*" >&2
192	exit 1
193	}
194
195	# 确认函数
196	confirm() {
197	read -p "$1 [y/N] " response
198	[[ "$response" =~ ^[Yy]$ ]]
199	}
200
201	if confirm "Continue?"; then
202	echo "Proceeding..."
203	fi
204	```
205
206	## 输入输出
207
208	### 读取输入
209	```bash
210	# 读取用户输入
211	read -p "Enter name: " name
212	read -sp "Enter password: " password # 隐藏输入
213	read -t 10 -p "Quick! " answer # 超时
214
215	# 读取文件
216	while IFS= read -r line; do
217	echo "$line"
218	done < file.txt
219	```
220
221	### 重定向
222	```bash
223	# 输出重定向
224	command > file # 覆盖
225	command >> file # 追加
226	command 2> error.log # 错误输出
227	command > file 2>&1 # 合并输出
228	command &> file # 同上
229
230	# 输入重定向
231	command < file
232
233	# Here Document
234	cat << EOF
235	多行文本
236	变量: $var
237	EOF
238
239	cat << 'EOF' # 不解析变量
240	原始文本
241	EOF
242	```
243
244	## 调试技巧
245
246	### 调试选项
247	```bash
248	# 启用调试
249	set -x # 打印执行的命令
250	set -v # 打印读取的行
251	set -e # 出错即退出
252	set -u # 未定义变量报错
253	set -o pipefail # 管道错误传递
254
255	# 组合使用
256	set -euxo pipefail
257
258	# 调试特定部分
259	set -x
260	# 调试代码
261	set +x
262	```
263
264	### 调试工具
265	```bash
266	# 语法检查
267	bash -n script.sh
268
269	# 调试运行
270	bash -x script.sh
271
272	# shellcheck 静态分析
273	shellcheck script.sh
274	```
275
276	## 最佳实践
277
278	### 脚本模板
279	```bash
280	#!/bin/bash
281	#
282	# Script: script_name.sh
283	# Description: Brief description
284	# Author: Your Name
285	# Date: 2024-01-01
286	#
287
288	set -euo pipefail
289
290	# Constants
291	readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
292	readonly SCRIPT_NAME="$(basename "$0")"
293
294	# Logging
295	log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"; }
296	error() { echo "[ERROR] $*" >&2; }
297	die() { error "$*"; exit 1; }
298
299	# Usage
300	usage() {
301	cat << EOF
302	Usage: $SCRIPT_NAME [options] <arguments>
303
304	Options:
305	-h, --help Show this help message
306	-v, --verbose Enable verbose mode
307
308	Examples:
309	$SCRIPT_NAME -v input.txt
310	EOF
311	}
312
313	# Parse arguments
314	parse_args() {
315	while [[ $# -gt 0 ]]; do
316	case $1 in
317	-h\|--help)
318	usage
319	exit 0
320	;;
321	-v\|--

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shell-scripting

84installs12forks

View on GitHub

How to install shell-scripting?

chaterm/terminal-skills/shell-scripting

$npx -y skills add chaterm/terminal-skills --skill shell-scripting

Installs into the current project.

Summary

Bash Shell 脚本编写

Files · 1

View on GitHub

SKILL.md

1	# Shell 脚本编写
2
3	## 概述
4	Bash 脚本编写、调试、最佳实践等技能。
5
6	## 基础语法
7
8	### 脚本结构
9	```bash
10	#!/bin/bash
11	# 脚本描述
12	# Author: name
13	# Date: 2024-01-01
14
15	set -euo pipefail # 严格模式
16
17	# 变量定义
18	VAR="value"
19	readonly CONST="constant"
20
21	# 主逻辑
22	main() {
23	echo "Hello, World!"
24	}
25
26	main "$@"
27	```
28
29	### 变量
30	```bash
31	# 定义变量
32	name="value"
33	name='literal value' # 不解析变量
34
35	# 使用变量
36	echo $name
37	echo ${name}
38	echo "${name}_suffix"
39
40	# 默认值
41	${var:-default} # 未设置时使用默认值
42	${var:=default} # 未设置时赋值并使用
43	${var:+value} # 已设置时使用 value
44	${var:?error message} # 未设置时报错
45
46	# 字符串操作
47	${#var} # 长度
48	${var:0:5} # 子串
49	${var#pattern} # 删除前缀
50	${var%pattern} # 删除后缀
51	${var/old/new} # 替换
52	```
53
54	### 数组
55	```bash
56	# 定义数组
57	arr=(a b c d)
58	arr[0]="first"
59
60	# 访问数组
61	${arr[0]} # 第一个元素
62	${arr[@]} # 所有元素
63	${#arr[@]} # 数组长度
64	${!arr[@]} # 所有索引
65
66	# 遍历数组
67	for item in "${arr[@]}"; do
68	echo "$item"
69	done
70	```
71
72	## 流程控制
73
74	### 条件判断
75	```bash
76	# if 语句
77	if [[ condition ]]; then
78	commands
79	elif [[ condition ]]; then
80	commands
81	else
82	commands
83	fi
84
85	# 条件表达式
86	[[ -f file ]] # 文件存在
87	[[ -d dir ]] # 目录存在
88	[[ -z "$var" ]] # 变量为空
89	[[ -n "$var" ]] # 变量非空
90	[[ "$a" == "$b" ]] # 字符串相等
91	[[ "$a" != "$b" ]] # 字符串不等
92	[[ $a -eq $b ]] # 数字相等
93	[[ $a -lt $b ]] # 小于
94	[[ $a -gt $b ]] # 大于
95
96	# 逻辑运算
97	[[ cond1 && cond2 ]] # 与
98	[[ cond1 \|\| cond2 ]] # 或
99	[[ ! cond ]] # 非
100	```
101
102	### 循环
103	```bash
104	# for 循环
105	for i in 1 2 3 4 5; do
106	echo $i
107	done
108
109	for i in {1..10}; do
110	echo $i
111	done
112
113	for ((i=0; i<10; i++)); do
114	echo $i
115	done
116
117	for file in *.txt; do
118	echo "$file"
119	done
120
121	# while 循环
122	while [[ condition ]]; do
123	commands
124	done
125
126	# 读取文件
127	while IFS= read -r line; do
128	echo "$line"
129	done < file.txt
130
131	# until 循环
132	until [[ condition ]]; do
133	commands
134	done
135	```
136
137	### case 语句
138	```bash
139	case "$var" in
140	pattern1)
141	commands
142	;;
143	pattern2\|pattern3)
144	commands
145	;;
146	*)
147	default commands
148	;;
149	esac
150	```
151
152	## 函数
153
154	### 定义函数
155	```bash
156	# 方式1
157	function_name() {
158	local var="local variable"
159	echo "Arguments: $@"
160	echo "First arg: $1"
161	echo "Arg count: $#"
162	return 0
163	}
164
165	# 方式2
166	function function_name {
167	commands
168	}
169
170	# 调用函数
171	function_name arg1 arg2
172
173	# 获取返回值
174	result=$(function_name)
175	```
176
177	### 常用函数模板
178	```bash
179	# 日志函数
180	log() {
181	local level=$1
182	shift
183	echo "[$(date '+%Y-%m-%d %H:%M:%S')] [$level] $*"
184	}
185
186	log INFO "This is info message"
187	log ERROR "This is error message"
188
189	# 错误处理
190	die() {
191	echo "ERROR: $*" >&2
192	exit 1
193	}
194
195	# 确认函数
196	confirm() {
197	read -p "$1 [y/N] " response
198	[[ "$response" =~ ^[Yy]$ ]]
199	}
200
201	if confirm "Continue?"; then
202	echo "Proceeding..."
203	fi
204	```
205
206	## 输入输出
207
208	### 读取输入
209	```bash
210	# 读取用户输入
211	read -p "Enter name: " name
212	read -sp "Enter password: " password # 隐藏输入
213	read -t 10 -p "Quick! " answer # 超时
214
215	# 读取文件
216	while IFS= read -r line; do
217	echo "$line"
218	done < file.txt
219	```
220
221	### 重定向
222	```bash
223	# 输出重定向
224	command > file # 覆盖
225	command >> file # 追加
226	command 2> error.log # 错误输出
227	command > file 2>&1 # 合并输出
228	command &> file # 同上
229
230	# 输入重定向
231	command < file
232
233	# Here Document
234	cat << EOF
235	多行文本
236	变量: $var
237	EOF
238
239	cat << 'EOF' # 不解析变量
240	原始文本
241	EOF
242	```
243
244	## 调试技巧
245
246	### 调试选项
247	```bash
248	# 启用调试
249	set -x # 打印执行的命令
250	set -v # 打印读取的行
251	set -e # 出错即退出
252	set -u # 未定义变量报错
253	set -o pipefail # 管道错误传递
254
255	# 组合使用
256	set -euxo pipefail
257
258	# 调试特定部分
259	set -x
260	# 调试代码
261	set +x
262	```
263
264	### 调试工具
265	```bash
266	# 语法检查
267	bash -n script.sh
268
269	# 调试运行
270	bash -x script.sh
271
272	# shellcheck 静态分析
273	shellcheck script.sh
274	```
275
276	## 最佳实践
277
278	### 脚本模板
279	```bash
280	#!/bin/bash
281	#
282	# Script: script_name.sh
283	# Description: Brief description
284	# Author: Your Name
285	# Date: 2024-01-01
286	#
287
288	set -euo pipefail
289
290	# Constants
291	readonly SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
292	readonly SCRIPT_NAME="$(basename "$0")"
293
294	# Logging
295	log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"; }
296	error() { echo "[ERROR] $*" >&2; }
297	die() { error "$*"; exit 1; }
298
299	# Usage
300	usage() {
301	cat << EOF
302	Usage: $SCRIPT_NAME [options] <arguments>
303
304	Options:
305	-h, --help Show this help message
306	-v, --verbose Enable verbose mode
307
308	Examples:
309	$SCRIPT_NAME -v input.txt
310	EOF
311	}
312
313	# Parse arguments
314	parse_args() {
315	while [[ $# -gt 0 ]]; do
316	case $1 in
317	-h\|--help)
318	usage
319	exit 0
320	;;
321	-v\|--

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