assorted typos

episodes/04-pipefilter.md

@@ -439,7 +439,7 @@ the algorithm is 'head of sort of line count of `*.pdb`'.
 
 The redirection and pipes used in the last few commands are illustrated below:
 
-![](fig/redirects-and-pipes.svg){alt='Redirects and Pipes of different commands: "wc -l \*.pdb" will direct theoutput to the shell. "wc -l \*.pdb > lengths" will direct output to the file"lengths". "wc -l \*.pdb | sort -n | head -n 1" will build a pipeline where theoutput of the "wc" command is the input to the "sort" command, the output ofthe "sort" command is the input to the "head" command and the output of the"head" command is directed to the shell'}
+![](fig/redirects-and-pipes.svg){alt='Redirects and Pipes of different commands: "wc -l \*.pdb" will direct the output to the shell. "wc -l \*.pdb > lengths" will direct output to the file"lengths". "wc -l \*.pdb | sort -n | head -n 1" will build a pipeline where the output of the "wc" command is the input to the "sort" command, the output ofthe "sort" command is the input to the "head" command and the output of the"head" command is directed to the shell'}
 
 :::::::::::::::::::::::::::::::::::::::  challenge
 

episodes/05-loop.md

@@ -577,7 +577,7 @@ The following diagram
 shows what happens when the modified loop is executed and demonstrates how the
 judicious use of `echo` is a good debugging technique.
 
-![](fig/shell_script_for_loop_flow_chart.svg){alt='The for loop "for filename in .dat; do echo cp $filename original-$filename;done" will successively assign the names of all ".dat" files in your currentdirectory to the variable "$filename" and then execute the command. With thefiles "basilisk.dat", "minotaur.dat" and "unicorn.dat" in the current directorythe loop will successively call the echo command three times and print threelines: "cp basislisk.dat original-basilisk.dat", then "cp minotaur.datoriginal-minotaur.dat" and finally "cp unicorn.datoriginal-unicorn.dat"'}
+![](fig/shell_script_for_loop_flow_chart.svg){alt='The for loop "for filename in .dat; do echo cp $filename original-$filename;done" will successively assign the names of all ".dat" files in your current directory to the variable "$filename" and then execute the command. With the files "basilisk.dat", "minotaur.dat" and "unicorn.dat" in the current directory the loop will successively call the echo command three times and print threelines: "cp basislisk.dat original-basilisk.dat", then "cp minotaur.datoriginal-minotaur.dat" and finally "cp unicorn.datoriginal-unicorn.dat"'}
 
 ## Nelle's Pipeline: Processing Files