linux: command命令简介 Linux中,command命令是一个用于确定给定命令的类型和位置的实用程序。具体来说,它可以检查指定命令是内建命令、外部命令还是别名。 主要功能 查找命令的类型:command命令可以确定某个命令是否为 Shell 内建命令。 执行命令:使用command运行命令时,可以忽略任何 Shell 函数的定义,仅执行程序或者内...
sed options 'commands' input-fileFor example:sed 's/foo/bar/' file.txtThis replaces “foo” with “bar” in file.txt.Some useful sed commands:s –Search and replace text /pattern/d –Delete lines matching a pattern 10,20d –Delete lines 10-20 1,3!d –Delete all except lines 1-3...
passwd[options][LOGIN] 为userbdc用户设置密码。 # passwd userbdc 修改用户 usermod[options]LOGIN 修改userbdc用户为root用户组 # usermod –g root userbdc 切换用户 su[options][LOGIN] 切换用户,只能获得用户的执行权限,不能获得环境变量 su userbdc 切换到用户并获得该用户的环境变量及执行权限 su - user...
The du command is a standard Linux/Unix command that allows a user to gain disk usage information quickly. It is best applied to specific directories and...
-Xmx100m -server -XX:+UseSerialGC -XX:-UseCompressedOops -XX:+UnlockDiagnosticVMOptions -cp ...
iostat是I/O statistics(输入/输出统计)的缩写,iostat工具将对系统的磁盘操作活动进行监视。它的特点是汇报磁盘活动统计情况,同时也会汇报出CPU使用情况。iostat也有一个弱点,就是它不能对某个进程进行深入分析,仅对系统的整体情况进行分析。 二、iostat命令安装 ...
Location: -> Settings -> vi-style line editing commands如下图所示:继续配置如下路径配置项:Location: -> Linux Module Utilities -> Simplified modutils默认会选中“Simplified modutils”,这里我们要取消勾选!!如下图所示:继续配置如下路径配置项:Location: -> Linux System Utilities -> mdev (17 kb) //...
Uniq commands Find unique content sort -u a.txt, but uniq command is more powerful, uniq a.txt works only on sorted files, sort a.txt | uniq. With uniq command, we can use multiple options: -d: to display ony duplicate lines. -c: to display numbers of occurrences of each line. ...
It was designed to help remind *nix system administrators of options for commands that they use frequently, but not frequently enough to remember. (github.com) 官方安装教程:cheat/INSTALLING.md at master · cheat/cheat (github.com) 手动安装 类Unix 类Unix系统可以使用下面一串命令解决。 cd /tmp...
Usage: scxadmin Generic options (for all commands) [-quiet] Set quiet mode (no output) General Options scxadmin -version Service Management scxadmin {-start|-stop|-restart|-status} [all|cimom|provider] Providers Management scxadmin -config-list {RunAs} scxadmin -config-set {RunAs} {CWD=<...