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1, log viewtail (cat) -f| greptail (CAT) + (any number of rows)-f| grep2, view catalogue Authorizationll (can compare the detailed presentation file directory)chmod751 filepathchmod755 filepath3, show processPS -ef| grep Java--------enumerating Java processesTop--------------+ f-------------------Reverse selection (remove an option)4,RPM Package Software Relatedrpm-qa| grep -e xxx (package full name)yuminstall -ivh xxx (Package): Install RPM Package5, Statistical network connection (useful

192.148.99.253 [17/jun/2003:11:18:21/si1 192.148.99.253 [17/jun/ 2003:11:20:34/SPNBSP;2 192.148.99.253 [17/JUN/2003:11:18:13/APNBSP;1 192.148.99.253 [17/jun/2003:11:17:30/hou/1 192.93.108.187 [17/jun/ 2003:14:49:14/SCNBSP;3 192.93.108.187 [17/JUN/2003:14:39:11/SINBSP;5 192.68.82.78 [05/jun/2003:00:05:45/hou/9 192.68.82.78 NBSP;[05/JUN/2003:00:05:45/SSNBSP;4 192.228.210.10 [16/jun/ 2003:09:29:30/hou/D=6To fetch the sixth line of the file, theSingle quotation marks[ - ]CODE:Sed-n ' "$d" '/P ' fi

I. The account still recommends the use of a personal offline local account. Using the Internet account in the background constantly upload, feel bad. Two. This computer does not display the next few folders of the library practice: Open the registry, Find [hkey_local_machine/software/microsoft/windows/currentversion/explorer/mycomputer/namespace/ Only delete all items in this directory, the subordinate

Spring's AOP personal understanding and use 1 What is AOP:AOP is aspect-oriented programming, which means programming for a functional module, a typical application is spring's declarative transaction,Spring's AOP transaction parsing:In the previous transaction management is to be fused in the logical code, in the logical code determines whether the transaction commits or rolls back, it is easy to cause th

Tags: no color div pad function Space str span fillSee two of the functions that have not been seen in SQL today, summarize; Function parameters:lpad (string1, padded_length, [pad_string]) which String1: source string Padded_length: The length of the string returned by the final result, and if the length of the final returned string is smaller than the source string, then this function actually intercepts the source strings, exactly as substr (String,number1,number2) does. If the padded_length i