1 ls 2 wc words 3 grep thing words 4 grep thing words|wc 5 grep 'things' words|wc 6 grep 'things' words 7 grep xyzzy words 8 grep plugh 9 grep plugh words 10 grep outh words 11 grep '^outh' words 12 grep '^outh$' words 13 grep '^thing$' words 14 echo hello |grep 'll' 15 echo hello |grep 'l.*l' 16 echo hello |grep 'l..*l' 17 echo hello | grep 'h|e' 18 echo hello | egrep 'h|e' 19 echo hello | grep 'h\|e' 20 echo asdfakljjjjjjjjjasdfa | grep 'k' 21 echo asdfakljjjjjjjjjasdfa | grep 'k*' 22 echo asdfakljjjjjjjjjasdfa | grep 'z*' 23 echo asdfakljjjjjjjjjasdfa | grep 'adj' 24* echo asdfakljjjjjjjjjasdfa | grep '' 25 grep '.e.z.' words 26 grep '^.e.z.$' words 27 ls 28 cd spim-7.3/ 29 ls 30 cd CPU 31 ls 32 grep 'stdio.h' *.[ch] 33 grep -n 'stdio.h' *.[ch] 34 grep REG_A0 *.c 35 cd 36 cd cse303 37 grep 'qu.*qu' words 38 grep 'q[aeiou]' words 39 grep 'w[aeiou]' words 40 grep 'w[aeiou].*w[aeiou]' words 41 grep '\(w[aeiou]\).*\1' words 42 grep '\(w[aeiou]\).*\(x[aeiou]\).*\1' words 43 grep '\(w[aeiou]\).*\(p[aeiou]\).*\1' words 44 grep '\(..*\).*\(..*\).*\2.*\1' words 45 grep '\(..*\)\(..*\).\2\1' words 46 grep '\(.\)\(.\).\2\1' words 47 grep '^\(.\)\(.\).\2\1$' words 48 grep '^\([a-zA-Z]*\)\1$' words 49 ls 50 history > lec6.history