Use of command-line parameter functions under linux
//912Vfr ?h==> -9 -1 -2 -V -f -r //t: p: c:==> -t 100 should be followed by the option A parameter//If it is a letter followed by two colon
Category: OS
Operating System (Operating System, referred to as OS) is a computer program that manages and controls computer hardware and software resources. It is the most basic system software that runs directly on the “bare metal”. Any other software must be supported by the operating system to run .
OSX – How to get a reaction – This machine is running on Iterm instead of the terminal on MacOS?
How do some people configure the terminal to run on iTerm instead of OSX? By default, it opens a new terminal window, but the terminal does not work like my window manager. The packager is launc
Linux foundation
Help command:
1.man [parameter] command, open help manual
1. Command: Man 1 CD, CD, CP, MV, Printf 2. System call: man 2 system function, fork() process
3. C language library function: man 3
Flow editor SED
Sed introduction Sed is a stream Editing tool, used to filter and replace text, especially when you want to make unified changes to dozens of configuration files, you will feel the charm of Sed! Se
Compiling Ruby 1.9.3 using RVM, Homebrew or Macports
I tried to install ruby 1.9.3 using rvm, using homebrew, and using macports, all seem to fail during compilation. I am using Lion OSX. This is the log file of my recent attempt to use rvm
Linux Hospital Kafka
kafka is a distributed message queue. With high performance, persistence, multiple copy backup, horizontal expansion capabilities. The producer writes a message to the queue, and the consumer fetch
SED a stream editor
Introduction Sed uses a stream editing mode:
The most obvious feature is that before sed processes data, it needs to provide a set of rules in advance. sed will edit the data according to this rul
ls command
1. File type:
Query all files in the bin directory:
-: file
Beginning: soft link
d Start: Directory file
2. File permissions:
r: read permission
w: write
OSX – Is it _really_ deleted DYLIB after installing homebrew?
I just installed homebrew and saw a message from the installation script stating that I should consider removing the following “evil” dylibs because they might break the build. Has anyone done this
Homebrew Introduction and Basic Use
One , What is Homebrew Homebrew is a software package management tool under the Mac OS platform. It has many useful functions such as installation, uninstallation, update, viewing, and searching.