[Edit]

Bash - repeat a character N times

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Created by:

Amir-Hashempur

607

This article will show you how to repeat a character N times in Bash.

To repeat character it is necessary to write some loop.

Quick solution (+ repeated 10 times):

xxxxxxxxxx
 
#!/bin/bash
​
for i in {1..10}; do echo -n "+"; done

or:

xxxxxxxxxx
 
#!/bin/bash
​
for (( i = 0; i < 10; ++i )); do echo -n "+"; done

Note: the -n attribute prevents every character from being displayed on a newline.

Reusable function

Edit

In this case, we use a predefined function that repeats character.

xxxxxxxxxx
 
#!/bin/bash
​
function repeat_character()
{
    local count="$1"
    local character="$2"
​
    for (( i = 0; i < "$count"; ++i ))
    do
        echo -n "$character"
    done
}
​
​
# Usage example:
​
repeat_character 10 "+"
repeat_character 10 "^"

Output:

xxxxxxxxxx
 
++++++++++
^^^^^^^^^^

Another solutions

Edit

In this section, we use a text variable that collects repeated characters.

1. Bash `for` loop syntax

Edit

xxxxxxxxxx
 
#!/bin/bash
​
character="+"
​
text=""
for i in {1..10}
do 
    text="${text}${character}"
done
​
echo "$text"

Output:

xxxxxxxxxx
 
++++++++++

2. C `for` loop syntax

Edit

xxxxxxxxxx
 
#!/bin/bash
​
count=10
character="+"
​
text=""
for (( i = 0; i < "$count"; ++i ))
do 
    text="${text}${character}"
done
​
echo "$text"

Output:

xxxxxxxxxx
 
++++++++++

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Reusable function

Another solutions

1. Bash for loop syntax

2. C for loop syntax

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1. Bash `for` loop syntax

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