Linux bash provides a lot of commands and features for Regular Expressions or regex. grep , expr , sed and awk are some of them. Bash also have =~ operator which is named as RE-match operator. In this tutorial we will look =~ operator and use cases. More information about regex command cna be...
Awk is very popular and useful tool for text and string manipulation. Regex or regular expression is generic language used to define text and string structures. Awk can Syntax Regular expression for awk can be used with the following syntax.
1 | awk '/REGULAR_EXPRESSION/' |
REGULAR_EXPRESSION is the regular expression we want to run ....
Bash provides programming features to make Linux system administrator’s life easier. printf is one of the most used function used by Linux bash programmers. In this tutorial we will look Linux bash printf features and use cases while developing bash programs. Bash printf function is very similar to the C printf function. Just...
Linux provides a lot of useful tools from command line. Vi or Vim is one of the very popular text editor used in Linux , Unix and BSd operating systems. In this tutorial we will look different usage examples of the Vim. From up to now we will call Vim...
Linux provides tool named grep for filter text data or output according to given string or regular expression. This tool is popular amongst Linux system administrators. On the other side Windows operating systems generally lacks this tool and its functionality up to Powershell. Powershell provides Select-String commandlet to provide similar features...
Powershell provides a lot of different string manipulation functions and features. Trim function is used to remove specified characters from string with different ways. In this tutorial we will look some of the trim examples. Trim White Spaces From Start and End We will start by trimming given string or texts...
Linux operating system have different tools to find diff and create patches. Windows operating system do not provide any builtin tool for these operations. But there is a 3 party application which can be used easily and freely called Winmerge. Download and Installation The winmerge tool can be downloaded from following...
Windows provides findstr tool to search file contents. These file contents expected to be text and string but binary binary files are accepted too. But searching binary files and content will not give good results. In this tutorial we will look different usage types of the findstr command. Keep in mind...
tr is mainly used to translate or delete characters in bash. tr is not a complex but useful command. We will look various usage scenarios of tr in this tutorial. Syntax We will use following syntax for tr command.
1 | tr [OPTION]... SET1 [SET2] |
Help Help can be get with –help parameter like below.
1 | $ tr --help |
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