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About the linuxtty command, the tty command is used to print the name of the terminal connected to the standard input. if devconsole is displayed, the terminal is the console terminal. if devptsn is displayed, this terminal is a virtual terminal

Fedora18 is started from the text mode instead of the graphic interface in the previous linux version. if you want to start the operating system and directly enter the text mode, you need to modify the etcinittab file, change 5 to 3. However, after

In shell, the read parameter read command-n (no line feed)-p (prompt statement)-n (number of characters)-t (wait time)-s (no Echo) 1. read the read command to receive standard input (keyboard) or input of other file descriptors ). After the input is

Set command alias command purpose alias is used to set command alias command syntax setting alias: alias [alias] [command name] Example: aliasrm & amp; 39; rm-I & amp; 39; clear alias: unalias [alias] All clear: unalias-a command instance [plain]

The prompt "userdel: user ** iscurrentlyloggedinubuntuuserdel" is displayed when the user is deleted. the prompt "userdel: user ** iscurrentlyloggedin" is displayed. Description: A New git user just created this morning, when switching to ubuntu

Grep regular expression note: 2013092123: 49: 182211793627 http: dsfafdfessafsdfasdafsearchhtm? Q % E5 % A5 % B3 % E8 % A3 % 85% E7 % A7 % 8B % E8 % A3 % 85% E8 % BF % 9E % E8 % A1 % A3 % E8 % A3 % 99 & am grep regular expression note: 20130921 23:49

Linux default built-in ZIP compression, supports a maximum of 4 GB compression, RAR compression ratio greater than 4 GB process: download, install, use ------------------------------------------------------ download wgethttp: www Linux RAR

Linux file decompression tips-x: Extract Files-c: create compressed files-z: decompress files through gzip or gunzipungzip-j: decompress the bzip2 format file-v: Display the file information processed in each step-f: Linux file decompression

Description of enabling thriftserver of hbase: the thriftserver of hbase has been compiled by default and can be used without the same configuration as hadoopthrift. To use the thrift interface of Hbase, you must start its service, command behavior:

The linuxchattr command learns many attributes for files in the linux system. the use of these attributes is of great help to ensure the security of the system. Using these attributes helps the system administrator effectively manage the system.

DonLibes, the author of shellexpect's method of using reverse CT, made the following definitions for reverse CT when he began to write secondary CT in 1990: keep CT is a software suite for Automatic Interaction (keep CT [isa]

1 first add the url of the master database to the local machine, gitremoteadd & lt; RepoName & gt; & lt; URL & gt; 2. get the modification record of the master database gitfetch -- get the modification gitmerge on the server -- merge, merge the

Modify the resolution of UbuntuServerCLI. in the virtual machine, the default resolution of UbuntuServerCLI is too small. it is not used to it. reading a manual requires less trouble, then, find this article to modify the virtual machine's

CentOS64 Fcitx40 installation 1. first install Chinese support: surootyuminstall & quot; @ ChineseSupport & quot; exityumremoveibus logout and login 2. install fcitx to download the fcitx input method source code. Baidu can search for it, I

Ubuntu 64-bit run 32-bit program 1 first install the necessary Library on softwarecenter, such as libncursesso6 (if apt-getinstall fails at this time, you need to do the following) a. create a preferences file in the etcapt Directory. B. edit the

In linux, the memory release operation is in Linux. we generally do not need to release the memory because the system has managed the memory well. But there are exceptions in everything. sometimes the memory is occupied by the cache, which affects

Method 1 for getting substrings in Shell simple common method $ exprsubstr & quot; linuxsong & quot; 15linux2 direct variable truncation $ a & quot; linuxsong & quot; $ echo $ {: 0: 5} use cut to intercept the string $ echo & quot; linuxsong & quot;

Linux command details-ipcs and ipcrm command name: ipcs permission: all users use ipcs [-m |-q |-s]-m to output shared memory (sharedmemory) information-q output information about the information queue (messagequeue)-s output linux command

Centos62 disabling IPV6 in Linux IPv6 is now supported by default installation, but for some application servers that are not well supported by IPv6, enabling IPv6 affects the server's network performance. after all, the current network switching

In ubuntu, how does one forcibly set a 1920*1080 resolution for a computer connected to a TV through hdmi xrandroid to only set some existing ones? What if the selected list does not exist? Xrandroid can view all the resolutions in the current