Crontab executed on the last day of each month

How to set crontab to run on the last day of each month: forLinux0828-31 ** ['date-dtomorrow + \ % e'-eq1] & amp; (shellscript) forotherUnix, BSD0828-31 ** ['echo \ 'Cal \ '| aw... How to set crontab to execute on the last day of each month:For

Shell uses clever IP address extraction

[Root @ XKWB5510 ~] # Ifconfigeth0 | awk-F & quot; [:] + & quot; & amp; #39; NR2 {print $4 & quot;/& quot; $ NF} & amp; #39; 192.168.200.210/255.255.255.0 in fact, the consciousness of this sentence is: [:] + with multiple spaces or multiple: as the

Create an FTP user in Linux

1. install vsftpd: run yuminstallvsftpd in shell to install vsftpd. 2. modify vsftpd configuration: find vsftpd under/etc/vsftpd. conf file, modify the default configuration, including the listening address and port, whether to enable tcp, psav mode,

How to install the. src. rpm Package

Some software packages end with. src. rpm. These software packages are rpm packages that contain source code and need to be compiled during installation. This type of software package has two installation methods: Method 1: 1. execute

How to decompress commands in linux

. Tar unpack: tarxvfFileName.tar package: tarcvfFileName.tar DirName (note: tar is packed, not compressed !) & Mdash; . TarUnpack: tar xvf FileName.tarPackage: tar cvf FileName.tar DirName(Note: tar is packed, not compressed !)---------------.

Shell statistics of log lines

Count the number of log lines: 1. wc-lnginx_access.log.2011-09-262.awk & amp; #39; END {printNR} & amp; #39; nginx_access.log.2011-09-263.awk & amp; #39; {maxmax & gt; NR? Max: NR} END {printmax} & amp; #39; n Count the number of log lines: 1. wc-l

Linux calculator commands

Linux comes with two commands that support basic mathematical computing. if you do not want to use commands, you can use python or the other two commands. One is that dc is actually an expression-based stack operation, the other is bc, which is

Implement password-free access between two (multiple) servers

1. log on to any server ssh192.168.21.902 and run the ssh-keygen-trsaJava code [root @ fedora14ip90 ~]. # Ssh-keygen-trsaGeneratingpublic/privatersakeypair. Enterfileinwhichtosa... 1. log on to any server Ssh 192.168.21.90 2. execute the command Ssh-

Linux top command details

The top command is a common performance analysis tool in Linux. it can display the resource usage of various processes in the system in real time, similar to the Windows Task Manager. The following describes how to use it. Top-01: 06: 48up1: 0.06

Time command meaning

Linux uses the time command to get the command execution time. in Linux, the time command can get the execution time of a program, including the actual running time of the program (realtime ), and the time when the program runs in the user-state

Blocking and non-blocking operations in Linux Device Drivers

Blocking and non-blocking define a blocking operation means that when a device operation is performed, if the resource cannot be obtained, the process suspends until the operation is completed. The suspended process enters the sleep state and is

Floating point operations on ARM

This article makes a summary of the floating point operation on arm recently encountered. First, let's take a look at how the arm processor handles floating point operations. During compilation, The Cross compiler presets the hard floating point

Linux (. vimrc file)

In Linux, the vim editor (. when you use vim to edit a vimrc file on a terminal, by default, the editing interface does not display line numbers, syntax high brightness display, smart indentation, and other functions. To better work in vim, you need

RHEL6 uses CentOS6 yum source

In RHEL6 1. uninstall yum # rpm-aq | grepyum | xargsrpm-e -- nodeps2, download the centos6 package # wgethttp: // uninstall In RHEL61. uninstall yum# Rpm-aq | grep yum | xargs rpm-e -- nodeps2. download the centos6 package# Wget

Scp command for Linux remote replication

Run the cygdrive command to upload local files to the target linux server in the cygwin window, and run the following command in the cygwin window: test @ test ~ $ Cd/cygdrive/f/20110929test @ test/cygdrive/f/20110929 $ ls all of the local 20110929..

Create user commands in linux

Create a new user as a super user (1) create a user using the useradd command: syntax useradd [user name to be created], press enter (2) use the passwd command to create a password for the user. Syntax: passwd [user name]. press enter (3) to enter

Apache uses. htaccess to control client access

Use. htaccess file to control users' access # vim/etc/httpd/conf/httpd. conf & lt; Directory & quot;/var/www/html/tips & quot; & gt; AllowOverrideauthconfig & lt;/Directory & gt; # mkdir/var/www/html/ Use the. htaccess file to control users' access#

Oraclelinux installs the unbreakablelinux kernel and the yumrepo of oraclevm.

I have reviewed oraclelinux and unbreakablelinuxkernwl over the past few days. In fact, centos + unbreakablelinuxkernelwww.2cto.com optimized by oraclelinux. if the kernel of unbreakablelinux is not installed through yum, it is not all o... I have

View Linux information

Linux & amp; reg; DebuggingandPerformanceTuning: TipsandTechniques chapter5/proc directory: Process-SpecificSubdirectoriesEachprocesssubdirectoryhasthefollowingentries: Entry   Linux®Debugging and Performance Tuning: Tips and Techniques chapter 5   /

Setup and use of cvs servers in Ubuntu

1. install software 1) install the cvs client $ apt-getinstallcvs2) install the cvs service user $ apt-getinstallcvsd2. server Configuration 1) configure the cvs home directory $ mkdir/exports/cvsroot/$ cvsd-buildroot/exports/cvsroot2) to create...  

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