How do you select multiple lines in Unix?

How do you select multiple lines in Unix?

Press Ctrl+D (Windows or Linux) or Command+D (Mac OS X) to select the next instance of the word. Repeat until you’ve selected the words you want to change. If you go too far & select an instance of the word you don’t want, press Ctrl+U (Windows or Linux) or Command+U (Mac OS X) to deselect that instance.

How do you select lines in sed?

To extract a range of lines, say lines 2 to 4, you can execute either of the following:

1. $ sed -n 2,4p somefile. txt.
2. $ sed ‘2,4! d’ somefile. txt.

How do you type multiple lines at once?

Multi-Line Editing

1. Windows: Ctrl + Alt + Arrow Keys.
2. Linux: Shift + Alt + Arrow Keys.
3. Mac: Opt + Cmd + Arrow Keys.

How do you type multiple lines?

What you do put your cursor where you want to add a character on a line, then use SHIFT+ALT and either the arrow keys or your mouse (you have to click to the same column position the line that you are selecting to) to select all the lines that you want to edit the same way.

How do you print the nth line using sed?

Sed Address Format 2: NUMBER1~NUMBER2 M~N with “p” command prints every Nth line starting from line M. For example, 3~2p prints every 2nd line starting from 3rd line as shown below.

Why is awk printing every line?

In an awk rule, either the pattern or the action can be omitted, but not both. If the pattern is omitted, then the action is performed for every input line. If the action is omitted, the default action is to print all lines that match the pattern.

How to print lines between two patterns using awk command?

Print Lines Between Two Patterns with AWK. Similar to the sed command, we can specify the starting pattern and the ending pattern with the awk command. Syntax: awk ‘/StartPattern/,/EndPattern/’ FileName. Example: awk ‘/BEGIN/,/END/’ info.txt ***** BEGIN ***** BASH is awesome BASH is awesome ***** END *****

How to print only strings between two lines using sed command?

Lets say we need to print only strings between two lines that contain patterns ‘BEGIN’ and ‘END’. With the sed command, we can specify the starting pattern and the ending pattern, to print the lines between strings with these patterns. The syntax and the example are shown below.

How to read a large number of lines in a file?

With regards to huge number of lines it is not prudent to keep whole files in memory. The solution in that case can be to sort the numbers-file and read one line at a time. The following has been tested with GNU awk: