Shell

1,Echo $?: An exit status is returned when any command is running, and the exit status of the previous command is output,0Indicates that the exit is successful. 2, Test File status:[-W text]Test whether the file can be written,Echo $?The output is0

Shell script:#! /Bin/Bash must pass the first line #! To specify the Current Shell I. variables:"": Allows you to reference values of other variables using the $ symbol.'': Other variables cannot be referenced. $ is considered as a normal

/* Is also the online answer. I don't know where to find it ......*/   In the Linux Shell environment, input and output redirection is supported, expressed by symbols . 0, 1, and 2 indicate the standard input, standard output, and standard error

1. display the 10 processes that consume the most memory/CPU ps aux | sort -nk +4 | tailps aux | sort -nk +3 | tail 2. view the number of concurrent Apache requests and their TCP connection status netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S)

I. RequirementsWhenever you create, delete, or rename a folder/file in the Explorer window, or insert and remove a mobile storage, Windows can always update all its views very quickly. Sometimes our program also needs this feature so that our

#! /Bin/bash Compile = gccTest_filename = driver. cTest_filename_base =$ {test_filename % .*}Test_basename = test # Echo and run the specified commandEcho_and_run (){Echo $ @Eval $ @ If [$? -Ne 0]; thenExit 1Fi} ######################################

Often, a software IOS jailbreak package requires many channels. I used to modify the channel number once and re-package it. However, as more and more channel numbers become daunting, you can only find one automatic packaging statement. You can

I. Basics We define a variable (there cannot be spaces on both sides of the equal sign) Filepath =/var/home/SSSFilefilename = test001 When referencing this variable, we can directly use the variable name following $. For example, $ filepathYou can

Transferred from: t00lsExp, a vulnerability circulating on the internet, indicates that the backend can be used only if the plus directory exists and the server can be connected externally._ 1 U-T (B-F8 CPrerequisites: You must prepare your own Dede

Burpsuite cracking webshell password + domestic black wide shell password collection Burpsuite_pro_v1.3.03 download: http://h4ck3r.nbst.org/tool/burpsuite_pro_v1.3.03.zip Burpsuite requires Java support. Install the Java environment first. First,

Observe the Oracle database performance. The AWR feature provided by Oracle provides us with a nearly perfect solution. With AWR features, we can extract AWR reports from the database at any time. However, we need to provide some interactive

Go to: http://goward.jimdo.com/2010/06/15/linux-shell%E5%90%84%E7%A7%8D%E5%BC%95%E5%8F%B7%E7%9A%84%E7%94%A8%E6%B3%95/ The difference between these characters is how they affect variables (such as $ name) and shell commands (such as date ). For any

# Ftp addressFtphost = "130.59.99.110"Username = "3weblogic1"Password = "3weblogic1" ./Exp_lanstop_remindGzip-F sig_conf_year.txtMdx = $ (csum sig_conf_year.txt.gz)# Echo $ mdxMD5 = 'echo "$ MDX" | awk-f''' {print $1 }''# Echo $ MD5Curdate = 'date +

Counter = 'ps-Ef | grep sync. bankcardbatchpay | grep-V grep | WC-l'If ["$ counter"-EQ 0]; thenEcho "No sync. bankcardbatchpay is running"ElseKill-9 'ps-Ef | grep sync. bankcardbatchpay | grep-V grep | awk '{print $2 }''Fi Classpath =

Dbstr = "Busi/xxxx @ CRM" Send_sms () {Pcount = 0For phone in $ phonelistDoTime = "inf" 'date + '% Y % m % d % H % m % s''Comm_sn = "$ {time} $1 $ {pcount }"Echo "comm_sn =$ {comm_sn }"SQL = "insert into Busi. log_sms_pay values ('"$ comm_sn"',

In the Linux Shell environment, input and output redirection is supported, expressed by symbols . 0, 1, and 2RepresentStandard input, standard output, and standard errorInformation output. It can be used to specify the standard input or output to

Common scripts in Linux include bash and shell. 1 #!/bin/bashecho "hello bash" #display one message Save the preceding content as a text file named me. The extension is arbitrary, but. Sh is often used as the extension. Run the command chmod A + x

Environment: [Lanux @ localhost -- debug --] $ uname-SRLinux 2.6.34.7-61. fc13.i686. PAE[Lanux @ localhost -- debug -- 15:32] $ rpm-Qa | grep anjutaAnjuta-doc-2.30.2.1-1.fc13.noarchAnjuta-2.30.2.1-1.fc13.i686Anjuta-devel-2.30.2.1-1.fc13.i686[Lanux @

#! /Bin/sh# The first line is to tell the system who will execute this dumb. $ ## Number of parameters transferred to the script$ # ID of the current process during script running, often used as the suffix of temporary variables, such as haison. $$!

  Linux Shell is actually a command interpreter that explains the commands entered by users and sends them to the kernel. In addition, shell has its own programming language for editing commands. It allows users to write programs composed of shell