Seq in Linux

Seq in Linux

seq: used to generate all integers from a certain number to another

seq parameters

parameter	Features
-f, --format=FORMAT	use printf style floating-point FORMAT (default: %g)
-s, --separator=STRING	use STRING to separate numbers (default: \n)
-w, --equal-width	equalize width by padding with leading zeroes

Example 1:

seq 1 10

The result is 1 2 3 4 5 6 7 8 9 10

Example 2:

#!/bin/bash
for i in `seq 1 10`;
do
echo $i;
done

Or use

for i in $(seq 1 10)

Example 3:

seq -f"%3g" 9 11

9
10
11
【Note: The number of digits specified after% is "%g", "%3g" by default, so the lack of digits is a space】