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<pre>
<pre>
   for i; do commands; done
   for i do commands; done
</pre>
</pre>



Revision as of 23:55, 29 February 2016

External

Internal

Overview

The for built-in command expand words, and execute commands once for each member in the resultant list, with i bound to the current member.

   for i in words; do commands; done

Alternatively, for:

   for i do commands; done

commands executes for each positional parameter (as if in "$@" had been specified.

Yes another alternative form:

    for (( i=0; i<${#names[@]}; i++ )); do
        local name=${names[${i}]}
        echo "${name}"
    done

!!!Iterating through $1, $2, $3 ...

{{{

    for i do
        echo ${i}
    done

}}}

!!!Iterating through a space separated list


{{{

   s="a b c"
   for i in ${s}
       do
           echo ${i}
       done

}}}

or

{{{

    s="a b c"
    for i in ${s}; do echo ${i}; done

}}}

Note the use of ";"


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