linux grep regex examples
Grep regex matches the search content according to the specified rule pattern, which can help us find the content we need precisely. Syntax: grep -E...
AWK tutorial: split on character awk or cut
In the previous article, we introduced the use of linux awk for string cutting. Here we introduce a method. use awk -F parameter use awk...
AWK tutorial: awk [-F] print example
- awk print last field
- print line number per line
- print specific columns
- use -F specifies a delimiter...
AWK tutorial: awk remove last character
awk remove last character use awk length and substr functions...
awk command tutorial in linux/unix with examples and use cases
linux awk tutorial: syntax, options, workflow, built-in variables, built-in functions, custom functions, conditional judgment, and usage examples....
linux find command tutorial: find syntax and examples
linux find – search for files in a directory hierarchy. syntax examples use find command – find file find – type filter explanation where x...
AWK tutorial: awk save to file
AWK save to file AWK append to file...
Awk tutorial: awk man
awk man...
AWK tutorial: awk newline character
How to use Awk print out a newline character in a string ？？？...
AWK tutorial: awk workflow
AWK follows a simple workflow − Read, Execute, and Repeat. BODY block This block is the core of the awk command. It consists of three...
ffmpeg video to image
- specify video time interception image - Output one image every second - Output one image every minute - use the select filter for a set of custom...
a mini parrotfish play
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awk if else and nested if else statements with examples
Awk if else condition judgment statement is to provide command branch control, awk if else syntax: if(condition) { action 1 } else { action...
fmpeg -filter_complex move image
- Image move from bottom to top in videos
- Video with image in the middle
- Start zooming in the middle of the picture - Using ffmpeg...
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