Detailed explanation of the usage of printf in Linux shell

This article mainly introduces the relevant information about the detailed usage of printf in Linux shell. I hope this article can help everyone. Friends in need can refer to

printf in Linux shell. Detailed usage

One syntax

printf 'Output type output format' Output content

Output type:

%ns: Output string. n is a number referring to how many characters are output.
%ni: Output integer. n is a number referring to how many numbers are output.
%m.n: Output floating point number. m and n are numbers, which refer to the number of integer digits and decimals output. For example, %8.2 represents a total of 8 digits output, of which 2 digits are decimals and 6 digits are integers.

Output format:

Second actual combat

[root@localhost ~]# printf %s 1 2 3 4 5 6
123456[root@localhost ~]# printf %s %s %s 1 2 3 4 5 6
%s%s123456[root@localhost ~]# printf '%s %s %s' 1 2 3 4 5 6
1 2 34 5 6[root@localhost ~]# printf '%s\t%s\t%s\n' 1 2 3 4 5 6
1 2 3
4 5 6
[root@localhost ~]# printf '%s' $(cat student.txt)
1furongF852fengjF603cangF70[root@localhost ~]#
[root@localhost ~]# printf '%s\t%s\t%s\t%s\n' $(cat student.txt)
1 furong F 85
2 fengj F 60
3 cang F 70

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