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Linux entry notes: 17th, Linux Command Line Text/file processing tools, linux File ProcessingI. File browsing
Cat View File Content more View File Content in the form of pages (only page flip) less View File Content in the form of pages (you can flip pages) head view the fir
Article Title: Linux (FC) Tips for adding a line number in the VI command line. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research
-N: Add line numbers to all lines
-B: Add line numbers to lines with text only
-S: Compress multiple blank rows into a single blank line
-T: Hide tabs
More commands
The more command implements the text content, but stops after each
In the Linux world, the most indispensable is the Linux Command Line application. The Linux Command Line can help us quickly find what we want, complete what we want to do, and complete
Old boy training quotations-habits] linux Command Line command line Command Re-query (this article will not talk about backup and Management of the Enter key before command knock)Conclu
can also impose restrictions on both. Only the following modifications are required:QUOTASFORUSERLANF:/dev/sda5:blocksinuse:0,limits (soft=102400,hard=409800)Inodesinuse:0,limits (soft=12800,hard=51200)This means that in addition to the corresponding capacity limitations, there are 12,800 soft limits and 51,200 hard limits on the number of files/directories. After a new configuration is saved, the user's disk usage cannot exceed the hard limit. If the user tries to exceed this limit, the operat
, backup file name is the original filename plus "~" suffix
If has ("VMS")
Set Nobackup
Else
Set backup
endif
If the discovery function does not work after the setup is complete, check if the vim-enhanced package is installed under the system and the query command is:$RPM-Q vim-enhancedNote: If you set the above settings, VIM does
At the beginning, I thought of using PHP's built-in ZipArchive, just like a common young man, to use PHP to call the Linux command line and execute the compression command, instead of installing the zip extension in the environment, if you are interested, you may want to learn about it. I hope this article will help yo
At the beginning, I thought of using PHP's built-in ZipArchive, just like a common young man, to use PHP to call the Linux command line and execute the compression command, instead of installing the zip extension in the environment, if you are interested, you may want to learn about it. I hope this article will help yo
A few days ago work, need to 3 TXT file, packaged into *.zip down to the local ...
In the beginning, like the average youth, I thought that with PHP's built-in ziparchive, the code would look like this:
Copy Code code as follows:
/* split into 3 txt files are wow_1.txt wow_2.txt and wow_3.txt*/
$zip =new ziparchive ();
$zipfile = './exl_file/wow.zip ';
if ($zip->open ($zipfile, ziparchive::create) ===true) {
$zip->addfile ('./exl_file/wow_1.txt ', ' wow_1.txt ');
$zip->
In linux, run the head command and tail command to view the specified lines in the file. in Linux, the most common commands for reading files are cat, more, and less. However, if you use the tail and head commands, it enables more convenient precise reading. In addition, you only need to
During work a few days ago, You Need To package three txt files into *. zip down to local ......In the first place, I thought of ZipArchive built in PHP like a common young man. The code looks like this:Copy codeThe Code is as follows:/* Split the file into three txt files: wow_1.txt wow_2.txt and wow_3.txt */$ Zip = new ZipArchive ();$ Zipfile = './Exl_file/wow.zip ';If ($ zip-> open ($ zipfile, ZIPARCHIVE: CREATE) === TRUE ){$ Zip-> addFile ('./Exl_file/wow_1.txt', 'wow_1.txt ');$ Zip-> addFil
During work a few days ago, You Need To package three txt files into *. zip down to local ......
In the first place, I thought of ZipArchive built in PHP like a common young man. The code looks like this:
Copy codeThe Code is as follows:/* split the file into three txt files, which are wow_1.txt wow_2.txt and wow_3.txt */
$ Zip = new ZipArchive ();
$ Zipfile = './Exl_file/wow.zip ';
If ($ zip-> open ($ zipfile, ZIPARCHIVE: CREATE) === TRUE ){
$ Zip-> addFile ('./Exl_file/wow_1.txt', 'wow_1.txt '
system use the Accton command, which must be run as root. The form of the Accton command for Accton File,file must exist beforehand. Create the Pacct file using the Touch command first:
#touch/var/log/pacct
And then run:
# ACCTON/VAR/LOG/PACCT
Once the Accton is activated, you can use the Lastcomm command to monitor a
introducing the background knowledge, let's take a look at the usage of these command parameters:
1. Some commands in Linux use LS-A (the front of the parameter) like this );
2. Some commands use CP -- Help (the first two parameters) in this way );
3. Use tar-xzvf (a horizontal line exists before the parameter );
4. In this case, tar xzvf is used (the parameter
. **** *** * Version:[20101205002-linux] * **********************************************************************This program was the console version of China fetion!It ' s free for personal user.This project website:http://www.it-adv.net/Author:kelvinh Msn/email:[email protected]Usage:--mobile=[mobile]--SID=[SID]--PWD=[PWD]--config=[config file] *format:index mobile password--index=[index no in config File,refer to sam
Some shortcut keys for the bash command line:Ctrl +a: Jump to the beginning of the commandCtrl+e: Jump to the end of the command lineCtrl+d: Delete keyCtrl+u: Delete cursor to the beginning of commandCTRL +K: Delete cursor to end of command lineCtrl+l: Clear ScreenHistorical History Command:-C: Clear all inside command
modify the Lang variable in the terminal when running the software on the Chinese interface, run the command from the terminal that modified the Lang variable. Of course, if you have installed fonts in other languages, you can run programs on interfaces of other languages. For example, Japanese:
[Root @ gucuiwen ~] # Lang = "ja_JP.UTF-8"[Root @ gucuiwen ~] # Gedit
The gedit editor opened with the above two commands is full Japanese interface, but ca
${mytest[*]}one two seven four five$
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To delete an element in an array: unset, but note some issues
unset mytest[2]$ echo ${mttest[*]}one two four five$ echo ${mytest[2]}$ echo ${mytest[3]}four$
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Delete entire array: unset + array Name
unset mytest$ echo ${mytest[*]}$
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5.8 Using command aliases
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