1 echo hello | grep 'e' 2 echo hello | grep 'q' 3 echo hello | grep 'll' 4 echo hello | grep 'l.l' 5 echo helllllllllllp | grep 'l.l ' 6 echo helllllllllllp | grep 'l.*l' 7 echo hello | grep 'l.*l' 8 echo hello | grep '^l.*l' 9 grep '.$' hamlet.txt 10 grep '.$' hamlet.txt |wc 11 wc hamlet.txt 12 grep '\.$' hamlet.txt 13 grep '\..$' hamlet.txt 14 tail hamlet.txt 15 grep '\..$' hamlet.txt |tail 16 tail hamlet.txt | od -a -b 17 emacs & 18 grep 'wp...e' words 19 grep '^a...x.*$' words 20 ls 21 cd spim-7.4/CPU/ 22 ls -l 23 grep 'REG_A0' *.c|more 24 grep 'stdio\.h' *.c 25 cd .. 26 cd .. 27 ls 28 grep '\(..\).*\1' words 29 grep '\(...\).*\1' words 30 grep '\(....\).*\1' words 31 grep '\(..\).*\(..\).*\2.*\1' words 32 grep '\(.\).*\(.\).*\(.\).*\3.*\2.*\1' words 33 grep '^\(.\).*\(.\).*\(.\).*\3.*\2.*\1$' words 34 grep '\([a-zA-Z]*\)\1' words 35 grep '^\([a-zA-Z]*\)\1$' words 36 ls -l 37 sed 's/Hamlet/Fred/' hamlet.txt |more 38 sed 's/Hamlet/Fred/' hamlet.txt |grep 'Fred'|more 39 sed 's/Hamlet/Hamlet, the Great Dane/' hamlet.txt |grep 'Fred'|more 40 sed 's/Hamlet/Hamlet, the Great Dane/' hamlet.txt 41 cat rushmore 42 sed 's/\(.*\), \(.*\)/\2 \1/' rushmore 43 sed 's/\(.*\), \(.*\)/2 1/' rushmore 44 sed 's/\(.*\),\(.*\)/\2 \1/' rushmore 45 sed 's/\(.*\) \(.*\)/\2 \1/' rushmore 46 sed 's/\(.*\)\(.*\)/\2 \1/' rushmore 47 sed 's|\(.*\), \(.*\)|2 1|' rushmore 48 sed 's|\(.*\), \(.*\)|\2 \1|' rushmore 49 tail hamlet.txt 50 more hamlet.txt 51 sed '/^$/d' hamlet.txt |more 52 sed '/^.$/d' hamlet.txt |more 53 sed '/^\r$/d' hamlet.txt |more 54* 55 sed '/^\r*$/d' hamlet.txt |more 56 history > lec6.history