linux如何删除一行内容
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在linux中,可以利用sed命令删除指定的一行内容,该命令能够对数据行进行替换、删除、新增、选取等工作,当参数设置为“d”时,可以删除行的内容,语法为“sed '需要删除的指定行数值d' ”。
本教程操作环境:linux7.3系统、Dell G3电脑。
sed是一种流编辑器,它是文本处理中非常好的工具,能够完美的配合正则表达式使用,功能不同凡响。
处理时,把当前处理的行存储在临时缓冲区中,称为“模式空间”(pattern space),接着用sed命令处理缓冲区中的内容,处理完成后,把缓冲区的内容送往屏幕。接着处理下一行,这样不断重复,直到文件末尾。
文件内容并没有改变,除非你使用重定向存储输出。Sed主要用来自动编辑一个或多个文件,可以将数据行进行替换、删除、新增、选取等特定工作,简化对文件的反复操作,编写转换程序等。
Linux sed 命令是利用脚本来处理文本文件。
sed 可依照脚本的指令来处理、编辑文本文件。
Sed 主要用来自动编辑一个或多个文件、简化对文件的反复操作、编写转换程序等。
语法为:
sed [-hnV][-e
基本
文件
流程
错误
SQL
调试
- 请求信息 : 2026-05-26 16:45:06 HTTP/1.1 GET : /article/goscps.html
- 运行时间 : 1.0244s ( Load:0.0066s Init:0.0011s Exec:1.0074s Template:0.0092s )
- 吞吐率 : 0.98req/s
- 内存开销 : 2,224.21 kb
- 查询信息 : 12 queries 5 writes
- 文件加载 : 36
- 缓存信息 : 0 gets 0 writes
- 配置加载 : 130
- 会话信息 : SESSION_ID=kusa6h0edkl2m8abj7ved0pmc5
- /www/wwwroot/tsicrk.com/index.php ( 1.09 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/ThinkPHP.php ( 4.61 KB )
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- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/BuildLiteBehavior.class.php ( 3.68 KB )
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- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Model.class.php ( 60.11 KB )
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- [ app_init ] --START--
- Run Behavior\BuildLiteBehavior [ RunTime:0.000005s ]
- [ app_init ] --END-- [ RunTime:0.000028s ]
- [ app_begin ] --START--
- Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000288s ]
- [ app_begin ] --END-- [ RunTime:0.000311s ]
- [ view_parse ] --START--
- [ template_filter ] --START--
- Run Behavior\ContentReplaceBehavior [ RunTime:0.000060s ]
- [ template_filter ] --END-- [ RunTime:0.000081s ]
- Run Behavior\ParseTemplateBehavior [ RunTime:0.006392s ]
- [ view_parse ] --END-- [ RunTime:0.006419s ]
- [ view_filter ] --START--
- Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000153s ]
- [ view_filter ] --END-- [ RunTime:0.000168s ]
- [ app_end ] --START--
- 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`pid`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
- 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
- 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( pid= )
- [8] Undefined index: pid /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php 第 47 行.
- [8] Undefined index: db_host /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 120 行.
- [8] Undefined index: db_port /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 121 行.
- [8] Undefined index: db_name /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 122 行.

1.0244s
