At the end of lecture 1, your instructor typed "history > lecture1-history"
into the shell. She then opened lecture1-history in the emacs editor and
deleted lines corresponding to earlier sessions. Then she wrote this
paragraph, saved the file, and put the result on the website. history is
a special "builtin" for the shell; I encourage you to learn more about it.
 1107  ls
 1108  ls dirA
 1109  ls dirB
 1110  cd dirA
 1111  cd ..
 1112  ls
 1113  cd dirB
 1114  cd ../dirA
 1115  cd ..
 1116  pwd
 1117  cd ..
 1118  pwd
 1119  cd ..
 1120  pwd
 1121  cd ..
 1122  cd ..
 1123  pwd
 1124  cd ..
 1125  cd ..
 1126  pwd
 1127  cd ..
 1128  cd ..
 1129  pwd
 1130  cd ..
 1131  pwd
 1132  ls
 1133  cd bin
 1134  ls
 1135  cd ..
 1136  ls
 1137  cd home
 1138  ls
 1139  cd magda
 1140  ls
 1141  cd /
 1142  cd
 1143  pwd
 1144  cd uw/classes/cse303-07wi/lectures/lecture1
 1145  pwd
 1146  cd uw/classes/cse303-07wi/lectures/lecture1
 1147  cd /home/magda/uw/classes/cse303-07wi/lectures/lecture1
 1148  cd /home/magda/uw/classes/cse303-07wi/lectures/lecture1/dirA/
 1149  man pwd
 1150  ls
 1151  cd dirAA/
 1152  pwd
 1153  cd ../dirB
 1154  pwd
 1155  cd ../../dirB/
 1156  ls /home/magda/uw/classes/cse303-07wi/lectures/lecture1/dirB/
 1157  echo PATH
 1158  echo $PATH
 1159  ls
 1160  cat short-file.txt 
 1161  type cat
 1162  cat long-file.txt 
 1163  less long-file.txt 
 1164  less /bin/ls 
 1165  ls
 1166  mv short-file.txt short-file.txt2
 1167  ls
 1168  cp short-file.txt2 short-file.txt
 1169  ls
 1170  cd
 1171  ls
 1172  cd ..
 1173  ls
 1174  ls happyjoe/
 1175  ls -l
 1176  history > lecture1-history
 1177  cd
 1178  history > lecture1-history