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# xargs(1)
```
xargs [opts] [cmd [init-args]]
-l [<num>] maximal number of lines per cmd invocation
if <num> it not provided, num=1 is assumed
-I <str> replace <str> in the [init-args] with the arg;
this implies -l, and hence processes one arg at a time
```
## Example
Collect arguments and prefix them with another option.
```sh
# Using -l to process one arg at a time.
eval strace -f (find /dev -name 'std*' | xargs -l echo -P | xargs) ls
# Using -I to place the arg at the specified location.
eval strace -f (find /dev -name 'std*' | xargs -I {} echo -P {}) ls
# Both commands achieve the same thing and result in something like:
# eval strace -f -P /dev/stdin -P /dev/stdout -P /dev/stderr ls
```
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