[CentOS] Re: ls and rm: "argument list too long"
Les Mikesell
lesmikesell at gmail.comSat Oct 18 04:52:00 UTC 2008
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Robert Nichols wrote: > >> These shouldn't make any difference. The limit is on the size of the >> expanded shell command line. > > Really? > > $ M=0; N=0; for W in `find /usr -xdev 2>/dev/null`; do M=$(($M+1)); > N=$(($N+${#W}+1)); done; echo $M $N > 156304 7677373 > > vs. > > $ /bin/echo `find /usr -xdev 2>/dev/null` > bash: /bin/echo: Argument list too long > > For the first case, the shell never tries to pass the list as command > arguments. > It builds the list internally, limited only by memory size, and > processes the > words one by one. Is that peculiar to bash? I thought the `command` construct was expanded by shells into the command line before being evaluated. -- Les Mikesell lesmikesell at gmail.com
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