I have many files in the same subdirectory as follows:
10 A
11 T
12 A
13 C
15 A Two columns, the first line always starts with the number 10.
I just want to Add lines 1-9 at the beginn
I have many files in the same subdirectory as follows:
10 A
11 T
12 A
13 C
15 A Two columns, the first line always starts with the number 10.
I just want to Add lines 1-9 at the beginn
python2 version: 2.7.16
python3 version: 3.7.4
Note: To install python3, you need to type win7 sp1 patch! Install python3 requires win7 sp1 patch! Install python3 requires win7 sp1 patc
Vim compiler related knowledge 1. About the Vim compiler In popular Linux operating systems, a super easy-to-use text editor is installed by default-the name is “vim” , vimis an upgraded version of
1. IP address configuration
guarantee linux can Normal Internet access
2, network yum source code (default is configured, only Just need to understand it)
3. Commonly used yum com
I’m fairly new to regular expressions, I recently used a regular expression in a perl script, and I can’t figure it out:
$groups= qr/\(([^()]+|(??{$groups}))*\)/; Any help will be greatly app
################for loop statement structure#############
When using for loop statement, you need Specify a variable and a list of possible values, and repeat the same command sequence for each dif
I have a string of…
“some text \\computername.example.com\admin$ “. How do I do the substitution so my final result is just “computername”
My question does not seem to know how to esc
I want to open a file (especially a video file) in its default program through a script. When I encounter a file name with spaces, it is treated as several parameters, This is not surprising:
The shell script realizes the query N days before or N days after the specified date 1 1 span> #!/bin/bash
2 func(){
3 read -p “Please enter the year, month and day (format: 2019-01-01): ”
I have a string in the following format:
TEXT #### TEXT #### SPECIALTEXT
I need Get SPECIALTEXT, basically the content after the second occurrence of ####. I can’t do it. Thank you
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