Cygwin commands don't work -

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i'm sorry question seems rather vague entire problem i'm facing. tried installing rpm package on cygwin after downloading website same error

-bash: rpm: command not found

and have reinstalled twice, same problem, , it's not that, can't use simple commands ls. if write ls no output. screen looks like.

user@user-pc ~ $ rpm -ivh avr-binutils-2.17tinyos-3.cygwin.i386.rpm -bash: rpm: command not found  user@user-pc ~ $ locate rpm | grep bin  user@user-pc ~ $   user@user-pc ~ $ ls  user@user-pc ~ $

what do fix this?

first, locate not auto-update itself; must run updatedb periodically current list of files. optimal speed , usability, add --prunepaths , --prunefs switches.

second, try echo $path see current path, , call ls fully-qualified pathname: /bin/ls -l

i suspect ls set invalid alias or internal function (bad command parameters). check contents of ~/.bash_profile, ~/.bashrc, , ~/.profile .


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