Merge pull request swcarpentry#1533 from swcarpentry/more-typos

typos: spelling/grammar

Author: bkmgit

episodes/01-intro.md

@@ -55,7 +55,7 @@ that automate repetitive tasks.
 
 Using the shell will take some effort and some time to learn.
 While a GUI presents you with choices to select, CLI choices are not automatically presented to you.
-It can be daunting at first, but once you've come familliar with this different style
+It can be daunting at first, but once you've come familiar with this different style
 of interacting, you will be able to efficiently accomplish a huge variety of tasks.
 
 ### Let's get started.

episodes/03-create.md

@@ -480,7 +480,7 @@ quotes.txt   thesis/quotations.txt
 ```
 
 The `-r` or `--recursive` option for `cp`
-applies the command not just to the specifed directory,
+applies the command not just to the specified directory,
 but to all its contents.
 
 As an example, we can use this to back up a directory:

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 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'}
+![](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 of the "sort" command is the input to the "head" command and the output of the"head" command is directed to the shell'}
 
 :::::::::::::::::::::::::::::::::::::::  challenge
 

episodes/07-find.md

@@ -194,7 +194,7 @@ $ grep -n -w -v "the" haiku.txt
 Similar to how the `-r` option applies `cp` to an entire directory's contents,
 we can add `-r` (recursive) to our `grep` command
 to search for a pattern through all the files in
-in a directory and its subdirectories.
+a directory and its subdirectories.
 
 Let's search for `Yesterday` in the `shell-lesson-data/exercise-data/writing` directory: