On 08/18/2010 11:58 AM, Eric Blake wrote: >> printf: 1: usage: printf format [arg ...] > > And dash's /bin/sh does NOT have $RANDOM, so you ended up doing the same > as esyscmd(`printf ').
[I hit send too soon; here's some clarifications] dash does not own /bin/sh. What I meant was: esyscmd uses /bin/sh (unless you specified differently at ./configure time); dash does not have $RANDOM; therefore, if dash is installed as /bin/sh, then esyscmd invokes a shell that does not have $RANDOM, and an undefined unquoted variable is elided, so you ended up doing the same as esyscmd(`printf '). > But if you are intending to stick with `' quoting, then use: > > esyscmd(`/bin/bash -c "\"$RANDOM\""') esyscmd(`/bin/bash -c "printf \"$RANDOM\""') -- Eric Blake [email protected] +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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