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I always wanted to sort out the usage and unmanaged methods of all managed classes under all. NET Compact framework. Write thisArticlePurpose: To help developers who want to get started and use some functions as a reference document. When writing these articles, I may be constantly learning and not very familiar with a lot of knowledge. When reading these articles, you can tell me your own needs and ideas, I will continue to expand and improve it. The article begins with the Managed class.

find this script in the search path, the value of the end state variable $ is 127; when executing./test.sh, the value of$ is 126 because the script does not have execution rights.[Email protected] ~]# test.sh-bash:test.sh: No file or directory [[email protected] ~]# echo $?127[[email protected] ~]#./test.sh-b Ash:./test.sh: Insufficient permissions [[

Special variables:$?: The execution result of the previous command returns a value of 0-255,0 for execution success, and other values indicate unsuccessful execution$!:shell PID of the last running background processPID of the $$:shell itself$: Script file path itself file name;$#: The number of script parameters;$*: all parameter lists. If "$*" is enclosed in "" ", output all parameters in the form of" $ $ ... $n "[Email protected]: all Parameters li

, login to console command line mode.4: The system is not used, reserved for general use, in some special cases you can use it to do some things. For example, you can switch to this mode to do some setup when your laptop's battery is running out.5: graphical mode, after landing into the graphical GUI mode or GNOME, KDE graphical interface, such as the X Window System.6: Restart mode, the default operation level can not be set to 6, otherwise it can not start normally, will always restart the pow

Tags: shell20.5 logical Judgments in shell scripts• format 1:if conditions; Then statement; FiExample: a=5If [$a-gt 3]; then echo OK; Fi[Email protected] shell]# sh If1.shok• format 2:if conditions; Then statement; else statement; FiExample: a=5If [$a-gt 3]; then echo OK; else Echo Nook; Fi[Email protected] shell]# sh If1.shok[[

, packets, RWX, USB, Sync, Sysdeps, Transport, JDWPAdb_trace environment variable-print debugging information. Use a comma-delimited list of one or all of the following: ADB, sockets, packets, RWX, USB, Sync, Sysdeps, Transport, JDWP-Android_serial-the SERIAL number to connect to. -S takes priority over this if given.Android_log_tags-when used with the LOGCAT option, only these debug TAGS is printed.Documents related to the official ADB tool can be found in:Http://developer.android.com/tools/hel

1. Experimental topology650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/89/D6/wKioL1gfOjLAuEWyAABc_gCD1CU531.png-wh_500x0-wm_3 -wmp_4-s_2728232332.png "title=" experimental topological diagram. PNG "alt=" Wkiol1gfojlauewyaabc_gcd1cu531.png-wh_50 "/>2, installation cacti2.1. Install related software[email protected] ~]# yum install-y httpd php php-mysql php-snmp mysql-server php-pdo net-snmp net-s

first, the environment preparation1.1. DescriptionWorking path/data/hdfs/data1/jianxin/1.2. Software versionOracle-xe-11.2.0-1.0.x86_64.rpm.zip1.3, modify the Tmpfs1.3.1, Oracle XE gives the minimum requirements in the Init.ora file, which is 1G by default. This expands the TMPFS to 2G:To Modify the/etc/fstab file:tmpfs/dev/shm tmpfs defaults 0 0modified to:tmpfs/dev/shm tmpfs defaults,size=2048m 0 01.3.2, Reload TmpfsUmount/dev/shm; Mount/dev/shm1.3.3, df-h/dev/shm view output:[

1, the creation of a 10G file system, the type of EXT4, requires the boot can be automatically mounted to a separate data/data directory;[[email protected] ~]# dd If=/dev/zero of=/root/test bs=10m count=1000Recorded 1000+0 read-inRecorded the writing of 1000+0.10485760000 gigabytes (GB) replicated, 13.7358 sec, 763 MB/s[Email protected] ~]# losetup/dev/loop0/root

1, the official download installation package: http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.htmlLinuxamd64_12102_database_1of2.zipLinuxamd64_12102_database_1of2.zip 2, creating oracle Users and Groups [Email protected]]# groupadd Oinstall[[Email protected]]# groupadd dba[[Email protect

This article mainly installs the newest version L version OpenStack, uses the Yum installs the way, compiles installs behind after the installation.Operation Guide:Only the "#" command line indicates that all nodes are operating, and the command line has a host name that represents the operation only on that host.In addition, the official document time synchronization uses the Chrony, this article still uses the NTP service.1. System environment# Unam

set personalized boot entry and settings Execute/bin/login program Enter login status Second, the common start troubleshooting1. Encrypt grub to prevent root password from being cracked[Email protected] ~]# Grub-md5-crypt #加密grub密码Password:Retype Password:$1$yr8im$ri0etbadp9l80jb2bdxpk1[Email protected] ~]# sed-i '/hiddenmenu/a password--md5 $

First, create an initialization of a NPM project, and then go back to select default in the terminal input NPM init Enter select Default, a Package.json file will appear and then you can install the required package two, install the required package because it's a small dome, let's simply configure Vue Input:NPM I webpack vue vue-loaderThen there will be warnNPM WARN [email protected] requires a peer of [email