Bash Built-In Variables: Difference between revisions
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==IFS== | ==IFS== | ||
==List Separator== | |||
The default list separator is space. That can be changed by setting the value of the <tt>IFS</tt> variable before executing <tt>set</tt>. | |||
Example: | |||
<pre> | |||
arg="a,b,c" | |||
IFS="," | |||
set ${arg} | |||
</pre> | |||
will identically assign "a", "b", "c" to positional parameters $1, $2 and $3. | |||
<blockquote style="background-color: Gold; border: solid thin Goldenrod;"> | |||
:'''Note''' you must set IFS back to " " after setting it to something else, so the basic shell function work as expected. This is done with IFS=" ".<br> | |||
</blockquote> | |||
Revision as of 23:35, 29 February 2016
Internal
Standard Environment Variables
IFS
List Separator
The default list separator is space. That can be changed by setting the value of the IFS variable before executing set.
Example:
arg="a,b,c"
IFS=","
set ${arg}
will identically assign "a", "b", "c" to positional parameters $1, $2 and $3.
- Note you must set IFS back to " " after setting it to something else, so the basic shell function work as expected. This is done with IFS=" ".