56 lines
1.3 KiB
Markdown
56 lines
1.3 KiB
Markdown
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# The `fold` command
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The `fold` command in Linux wraps each line in an input file to fit a specified width and prints it to the standard output.
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By default, it wraps lines at a maximum width of 80 columns but this is configurable.
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To fold input using the fold command pass a file or standard input to the command.
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### Syntax:
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```
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fold [OPTION]... [FILE]...
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```
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### Options
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**-w** : By using this option in fold command, we can limit the width by number of columns.
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By using this command we change the column width from default width of 80.
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Syntax:
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```
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fold -w[n] [FILE]
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```
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Example: wrap the lines of file1.txt to a width of 60 columns
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```
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fold -w60 file1.txt
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```
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**-b** : This option of fold command is used to limit the width of the output by the number of bytes rather than the number of columns.
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By using this we can enforce the width of the output to the number of bytes.
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```
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fold -b[n] [FILE]
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```
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Example: limit the output width of the file to 40 bytes and the command breaks the output at 40 bytes.
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```
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fold -b40 file1.txt
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```
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**-s** : This option is used to break the lines on spaces so that words are not broken.
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If a segment of the line contains a blank character within the first width column positions, break the line after the last such blank character meeting the width constraints.
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```
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fold -w[n] -s [FILE]
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```
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