John Tate wrote: > I put a comment in before the line with a problem, I don't understand > why it's not working. > > bash# for x in 1 2 3 4; do time dd if=/dev/random of=/home/test$x > bs=1k count=64k & done \ > while [ $V -eq 0 ]; \ > do \ > #why the hell is this such a problem! > V = 0 \ > clear \ > echo -n "Jobs running... " \ > if jobs 4; then; echo -n "last job running!"; else; echo -n "last job > stopped"; > env V=1; fi \ > sleep 1 \ > done > time cat secure1 secure2 secure3 secure4 > secure_t.vnd \ > time rm secure1 secure2 secure3 secure4
- ''V = 0'' runs the command named V with parameters = and 0. Use v=0. Using all uppercase variables names can clash with internal shell / environment variables you'll need later in your script. Think about PATH=/foo/bar; touch "$PATH". - Why do you use ''clear'' when debugging a script? - Why do you add backslashes at the end of every line (every line but the first, where you'd actually have needed it)? - Why are you using ''env V=1''? The env utility (which is an external binary) cannot set the current shell's variables. - Why are you trying to launch those dd commands in parallel? This will probably not make your script faster, and is much more error-prone than a mere: for i in 1 2 3 4; do dd ... of="/home/test$i"; done - You don't seem to need bash. Most of people I know don't know how to use the syntactic sugar that separates bash from pdksh. If you want to ask questions about bash there are appropriate mailing lists. - Please consider posting a properly indented, clean script next time.
