505 ls 506 test -e pig.txt 507 echo $? 508 echo oink > pig.txt 509 test -e pig.txt 510 echo $? 511 test -e pig.txt; echo $? 512 simple-read.sh 513 simple-read.sh 514 simple-read.sh 515 simple-read.sh 516 chmod 700 loop-read.sh 517 loop-read.sh 518 loop-read.sh 519 either.sh 520 either.sh foo 521 y-or-n.sh 522 y-or-n.sh 523 y-or-n.sh 524 test -f ~/.bash_profile 525 echo $? 526 ln -s pig.txt softy.txt 527 test -f softy.txt 528 echo $? 529 ls /dev 530 ssh st10@nrs-labs.humboldt.edu 531 tty 532 which ls vi emacs 533 which prepSource3 534 which bibbity 535 echo $? 536 echo oink > pig.txt 537 echo oink > piggy.txt 538 cmp pig.txt oink.txt 539 echo $? 540 cmp pig.txt piggy.txt 541 echo $? 542 echo oink >> piggy.txt 543 echo $? 544 cmp pig.txt piggy.txt 545 echo $? 546 diff pig.txt piggy.txt 547 ls 548 loop-read.sh* 549 diff loop-read.sh* 550 diff 279lect08-2-projected.txt simple-read.sh 551 ls shells1 552 ls shells2 553 diff shells1 shells2 554 mkdir shells1/dir1 555 mkdir shells2/dir1 556 echo moo > shells1/dir1/moo 557 diff -r shells1 shells2 558 diff shells1 shells2 559 history > 279lect08-2-history.txt