Hi Stepan, * Stepan Kasal wrote on Wed, Mar 28, 2007 at 05:41:35PM CEST: > > echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed [...] > BTW, could the same have been achieved by the following? > > sed 99q >conftest.sed <<_ACEOF > $ac_script > _ACEOF
Probably. But here-documents are _very_ expensive for old shells (the number of links created grows with complexity of surrounding script even), and mildly expensive even for some new shells (creation and removal of a temp file). Redirections of file descriptors are very cheap, for any shell I know (a syscall or two). Cheers, Ralf
