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myfile.txt","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"mkdir: Create the DIRECTORY(ies), if they do not already exist","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Navigating to you ","type":"text"},{"text":"/home","type":"text","marks":[{"type":"code"}]},{"text":" and make a folder called ","type":"text"},{"text":"folder01","type":"text","marks":[{"type":"code"}]},{"text":".","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"$ cd\n[~]$ ls\nDesktop Documents Downloads\n[~]$ mkdir folder01\n[~]$ ls\nDesktop Documents Downloads folder01","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Try creating that folder again. What happens?","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ mkdir folder01\nmkdir: cannot create directory ‘folder01’: File exists","type":"text"}]},{"type":"panel","attrs":{"panelType":"warning"},"content":[{"type":"paragraph","content":[{"text":"If a folder already exists, you can not make it again.","type":"text"}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Navigate into this folder and print the current working directory.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ cd folder01/\n[folder01]$ pwd\n/home//folder01","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":2},"content":[{"text":"mkdir: Create the DIRECTORY(ies), if they do not already exist","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Within ","type":"text"},{"text":"folder01","type":"text","marks":[{"type":"code"}]},{"text":", try creating two new folders called ","type":"text"},{"text":"folder02","type":"text","marks":[{"type":"code"}]},{"text":" and ","type":"text"},{"text":"folder03","type":"text","marks":[{"type":"code"}]},{"text":".","type":"text"}]},{"type":"paragraph","content":[{"text":"Navigate into ","type":"text"},{"text":"folder02","type":"text","marks":[{"type":"code"}]},{"text":" and print the current working directory.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[folder01]$ mkdir folder02 folder03\n[folder01]$ ls\nfolder02 folder03\n[folder01]$ cd folder02/\n[folder02]$ pwd\n/home//folder01/folder02","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Notice","type":"text","marks":[{"type":"strong"}]},{"text":": You can create multiple folders at the same time.","type":"text"}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"mv: Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Renaming a file is the same as moving it to a new name.","type":"text"}]},{"type":"paragraph","content":[{"text":"Navigate to your home and create a file called ","type":"text"},{"text":"myfil.txt","type":"text","marks":[{"type":"code"}]}]}]},{"type":"codeBlock","content":[{"text":"[]$ $ cd\n[~]$ touch myfil.txt\n[~]$ ls\nDesktop Documents Downloads folder01 myfil.txt","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Move this file from ","type":"text"},{"text":"myfil.txt","type":"text","marks":[{"type":"code"}]},{"text":" to ","type":"text"},{"text":"myfile.txt","type":"text","marks":[{"type":"code"}]},{"text":".","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ mv myfil.txt myfile.txt \n[~]$ ls\nDesktop Documents Downloads folder01 myfile.txt","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Notice how we have ","type":"text"},{"text":"moved","type":"text","marks":[{"type":"em"}]},{"text":" the file from one name to a new name - 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","type":"text"},{"text":"cp -h","type":"text","marks":[{"type":"code"}]}]},{"type":"paragraph","content":[{"text":"In this specifically ","type":"text"},{"text":"-r","type":"text","marks":[{"type":"code"}]},{"text":" that ","type":"text"},{"text":"recursively","type":"text","marks":[{"type":"em"}]},{"text":" copy a folder and all its contents.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ cp –r folder01 folder04\n[~]$ ls\nDesktop Documents Downloads folder01 folder04 myfile02b.txt myfile02.txt\n[~]$ ls folder04\nfolder02 myfile02b.txt myfile.txt","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"rmdir: Remove the DIRECTORY(ies), if they are empty","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"The ","type":"text"},{"text":"rmdir","type":"text","marks":[{"type":"code"}]},{"text":" command can only be used to remove an empty directory.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ ls \nDesktop Documents Downloads folder01 folder04 myfile02b.txt myfile02.txt\n[~]$ mkdir folder05\n[~]$ ls\nDesktop Documents Downloads folder01 folder04 folder05 myfile02b.txt \nmyfile02.txt\n\n# Can remove folder05 since it is empty.\n[~]$ rmdir folder05\n[~]$ ls\nDesktop Documents Downloads folder01 folder03 myfile02b.txt myfile02.txt\n\n[~]$ rmdir folder04/\nrmdir: failed to remove 'folder04/': Directory not empty","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"You can not use ","type":"text"},{"text":"rmdir","type":"text","marks":[{"type":"code"}]},{"text":" to remove a directory that has files still within it. The folder must be empty.","type":"text"}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"rm: Remove (unlink) the FILE(s)","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Look at one way at removing a folder that itself contains folders and files.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ cd\n[~]$ cd folder04\n[folder04]$ ls\nfolder02 myfile02b.txt myfile.txt\n\n[folder04]$ ls folder02/\n[folder04]$\n# ‘folder02’ is empty.\n[folder04]$ rmdir folder02/\n\n[folder04]$ ls\nmyfile02b.txt myfile.txt\n[folder04]$ rm myfile.txt \n[folder04]$ ls\nmyfile02b.txt\n[folder04]$ rm myfile02b.txt","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":2},"content":[{"text":"rm: Remove (unlink) the FILE(s)","type":"text"}]},{"type":"codeBlock","content":[{"text":"[folder04]$ ls\n[folder04]$\n# ‘folder04’ is now empty.\n[folder04]$ cd ..\n[~]$ rmdir folder04/\n[~]$ ls\nDesktop Documents Downloads folder01 myfile02b.txt myfile02.txt","type":"text"}]},{"type":"panel","attrs":{"panelType":"warning"},"content":[{"type":"paragraph","content":[{"text":"This has taken a lot of individual steps.","type":"text"}]},{"type":"paragraph","content":[{"text":"Can we do this quicker?","type":"text"}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":2},"content":[{"text":"rm: folders and file(s","type":"text"},{"text":")","type":"text","marks":[{"type":"underline"}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Take a further look at the ","type":"text"},{"text":"rm","type":"text","marks":[{"type":"code"}]},{"text":" command.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ cd\n[~]$ rm folder01/\nrm: cannot remove 'folder01/': Is a directory","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"You can not use the ","type":"text"},{"text":"rm","type":"text","marks":[{"type":"code"}]},{"text":" command ","type":"text"},{"text":"with no options","type":"text","marks":[{"type":"em"}]},{"text":" to remove a folder.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ rm --help\nUsage: rm [OPTION]... [FILE]...\nRemove (unlink) the FILE(s).\n...\n -r, -R, --recursive remove directories and their contents recursively\n...","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Using ","type":"text"},{"text":"help","type":"text","marks":[{"type":"em"}]},{"text":" we found we can use the ","type":"text"},{"text":"-r","type":"text","marks":[{"type":"code"}]},{"text":" option to remove a folder ","type":"text"},{"text":"and all its contents","type":"text","marks":[{"type":"em"}]},{"text":".","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ rm -r folder01/\n[~]$ ls\nDesktop Documents Downloads myfile02b.txt myfile02.txt\n# Can remove multiple files.\n[~]$ rm myfile02b.txt myfile02.txt \n[~]$ ls\nDesktop Documents Downloads","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Alternatively we could have removed the above 2 files with: ","type":"text"},{"text":"rm myfile*","type":"text","marks":[{"type":"code"}]},{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":"The ","type":"text"},{"text":"*","type":"text","marks":[{"type":"code"}]},{"text":" character is a wildcard, so the ","type":"text"},{"text":"rm myfile*","type":"text","marks":[{"type":"code"}]},{"text":" will remove all starting with the characters ","type":"text"},{"text":"myfile","type":"text","marks":[{"type":"code"}]}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"rm: WARNING","type":"text"}]},{"type":"paragraph","marks":[{"type":"alignment","attrs":{"align":"center"}}],"content":[{"text":"From the command-line there is NO trash bin!","type":"text","marks":[{"type":"strong"}]}]},{"type":"paragraph","marks":[{"type":"alignment","attrs":{"align":"center"}}],"content":[{"text":"Using ","type":"text"},{"text":"rm","type":"text","marks":[{"type":"code"}]},{"text":"/","type":"text"},{"text":"rmdir","type":"text","marks":[{"type":"code"}]},{"text":" is FINAL!","type":"text"}]},{"type":"mediaSingle","attrs":{"layout":"center","width":225,"widthType":"pixel"},"content":[{"type":"media","attrs":{"width":225,"alt":"spiderman.png","id":"1feae7fe-88d9-4704-84bc-b4c62b728c67","collection":"contentId-2184642658","type":"file","height":225}}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"history","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"The ","type":"text"},{"text":"history","type":"text","marks":[{"type":"code"}]},{"text":" command allows you to look back at the last commands you’ve called.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[~]$ history --help\nhistory: history [-c] [-d offset] [n] or history -anrw [filename] or history -ps arg [arg...]\n Display or manipulate the history list.\n ...\n[~]$ history \n ...\t\n 219 rm -f folder01/\n 220 rm -r folder01/\n 221 ls\n 222 rm myfile02b.txt myfile02.txt \n 223 ls\n 224 history","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"You can repeat a command. Lets repeat the command ","type":"text"},{"text":"labelled","type":"text","marks":[{"type":"em"}]},{"text":" ","type":"text"},{"text":"223","type":"text","marks":[{"type":"code"}]},{"text":":","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[@blog1 ~]$ !223\nls\nDesktop Documents Downloads","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"Exercises: Navigation","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Questions","type":"text","marks":[{"type":"strong"}]},{"text":":","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"How can you return to your home folder?","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"What command do you use if you’ve forgotten where you are in the folder hierarchy?","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"How can you list what is in a folder as well as any subfolders?","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Go back through the command related slides and try for yourself.","type":"text"}]}]}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":2},"content":[{"text":"Answers","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"1: How can you return to your home folder?","type":"text"}]}]},{"type":"expand","attrs":{"title":"Answer"},"content":[{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Use: ","type":"text"},{"text":"cd","type":"text","marks":[{"type":"code"}]},{"text":" or ","type":"text"},{"text":"cd ~","type":"text","marks":[{"type":"code"}]},{"text":" as a shortcut to return to your home folder instead of using a ","type":"text"},{"text":"cd /home/$USER","type":"text","marks":[{"type":"code"}]},{"text":" or ","type":"text"},{"text":"cd /home//","type":"text","marks":[{"type":"code"}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"cd stands for: change directory","type":"text"}]}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"2: What command do you use if you’ve forgotten where you are in the folder hierarchy?","type":"text"}]}]},{"type":"expand","attrs":{"title":"Answer"},"content":[{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Use: ","type":"text"},{"text":"pwd","type":"text","marks":[{"type":"code"}]}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"This stands for: print working directory.","type":"text"}]}]}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"3: How can you list what is a folder as well as any subfolders?","type":"text"}]}]},{"type":"expand","attrs":{"title":"Answer"},"content":[{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"ls","type":"text","marks":[{"type":"code"}]},{"text":" command lists contents, which flag do we use to get it’s subfolders as well? ","type":"text"}]}]}]},{"type":"codeBlock","content":[{"text":"[]$ man ls\n-R, --recursive\n list subdirectories recursively\n[]$ ls -R","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"-R","type":"text","marks":[{"type":"code"}]},{"text":" is for recursive, which relates to repeated application of the rule over successive executions. We continue applying the listings for all subfolders that exist within the top level parent directory. ","type":"text"}]}]}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"File Ownership and Permissions","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"What does the ","type":"text"},{"text":"output","type":"text","marks":[{"type":"strong"}]},{"text":" of ","type":"text"},{"text":"ls –l","type":"text","marks":[{"type":"code"}]},{"text":" mean?","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[@blog1 ~]$ cd /project//intro_to_linux\n[@blog1 intro_to_linux]$ ls -al\ntotal 54\ndrwxrwsr-x 4

4096 Oct 6 08:09 .\ndrwxrws--- 40 root 4096 Oct 6 08:09 ..\ndrwxrwsr-x 2

4096 Oct 5 11:19 clusters\ndrwxrwsr-x 6

4096 Oct 5 14:56 data\n-rw-rw-r-- 1

874 Oct 5 15:30 fruits.txt\n-rw-rw-r-- 1

34472 Oct 5 10:57 software.csv\n-rw-rw-r-- 1

1603 Oct 6 08:08 vegatables.txt\n-rw-rw-r-- 1

26 Oct 5 07:20 workshop_all.txt\n-rw------- 1

23 Oct 5 07:20 workshop_me.txt","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"The first character on the left indicates if it is a directory “","type":"text"},{"text":"d","type":"text","marks":[{"type":"strong"}]},{"text":"” or a file “","type":"text"},{"text":"-","type":"text","marks":[{"type":"strong"}]},{"text":"”.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"drwxrwsr-x clusters # A folder.\n-rw-rw-r-- workshop_all.txt # A file.","type":"text"}]},{"type":"rule"},{"type":"heading","attrs":{"level":2},"content":[{"text":"File Ownership and Permissions","type":"text"}]},{"type":"codeBlock","content":[{"text":"-rw-rw-r-- 1

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4096 May 16 16:26 \n...","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"The middle set of permissions is “drwx","type":"text"},{"text":"r-s","type":"text","marks":[{"type":"underline"}]},{"text":"r-x” means no one other than ","type":"text"},{"text":"","type":"text","marks":[{"type":"code"}]},{"text":" has permission to write within this folder.","type":"text"}]},{"type":"paragraph","content":[{"text":"Try navigating into a ","type":"text"},{"text":"","type":"text","marks":[{"type":"code"}]},{"text":" folder within ","type":"text"},{"text":"","type":"text","marks":[{"type":"code"}]},{"text":" and creating a file.","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[]$ cd /\n# Can create (write) a file within this folder?\n[","type":"text","marks":[{"type":"code"}]},{"text":" can create (write) a file within this folder.","type":"text"}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":3},"content":[{"text":"If we change directories, and go to /project//intro_to_linux, what permissions do the contents of this directory have?","type":"text"}]},{"type":"codeBlock","content":[{"text":"[]$ cd ../intro_to_linux\n[]$ ls -al\n# -rw-rw-r-- 1

26 Oct 5 07:20 workshop_all.txt","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Any user within the ","type":"text"},{"text":"","type":"text","marks":[{"type":"code"}]},{"text":" group can read/write the file ","type":"text"},{"text":"workshop_all.txt","type":"text","marks":[{"type":"code"}]},{"text":".","type":"text"}]},{"type":"paragraph","content":[{"text":"Everybody","type":"text","marks":[{"type":"underline"},{"type":"em"}]},{"text":" can read it. Do you want anyone outside of this project to be able to read this file?","type":"text"}]}]},{"type":"codeBlock","content":[{"text":"[] ls -al\n# -rw------- 1

23 Oct 5 07:20 workshop_me.txt\n[intro_to_linux]$ cat workshop_me.txt\ncat: workshop_me.txt: Permission denied","type":"text"}]},{"type":"panel","attrs":{"panelType":"warning"},"content":[{"type":"paragraph","content":[{"text":"Only user ","type":"text"},{"text":"","type":"text","marks":[{"type":"code"}]},{"text":" can read/write this file. No one else, not even anyone within the ","type":"text"},{"text":"","type":"text","marks":[{"type":"code"}]},{"text":" group, can view this file.","type":"text"}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":1},"content":[{"text":"Exercises: Permissions","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"Questions","type":"text","marks":[{"type":"strong"}]},{"text":": In all cases be able to justify your answer.","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Can you create a folder under ","type":"text"},{"text":"/project//username>/","type":"text","marks":[{"type":"code"}]},{"text":"? ","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Can you ","type":"text"},{"text":"/project//intro_to_linux/","type":"text","marks":[{"type":"code"}]},{"text":" and view ","type":"text"},{"text":"workshop_all.txt","type":"text","marks":[{"type":"code"}]},{"text":"?","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Can you ","type":"text"},{"text":"/project//intro_to_linux/","type":"text","marks":[{"type":"code"}]},{"text":" and view ","type":"text"},{"text":"workshop_me.txt","type":"text","marks":[{"type":"code"}]},{"text":"? ","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Can you ","type":"text"},{"text":"cd","type":"text","marks":[{"type":"code"}]},{"text":" into the ","type":"text"},{"text":"/opt","type":"text","marks":[{"type":"code"}]},{"text":" folder?","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"Can you ","type":"text"},{"text":"cd","type":"text","marks":[{"type":"code"}]},{"text":" into the ","type":"text"},{"text":"/root","type":"text","marks":[{"type":"code"}]},{"text":" folder?","type":"text"}]}]}]}]},{"type":"rule"},{"type":"heading","attrs":{"level":2},"content":[{"text":"Answers","type":"text"}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"1. Can you create a folder under ","type":"text"},{"text":"/project//username>/","type":"text","marks":[{"type":"code"}]},{"text":"? ","type":"text"}]}]},{"type":"expand","attrs":{"title":"Answer"},"content":[{"type":"codeBlock","content":[{"text":"[]$ cd /project//\n[]$ cd \n[]$ touch test.txt\n# Do you get a “Permission denied”?","type":"text"}]},{"type":"paragraph","content":[{"text":"Yes","type":"text","marks":[{"type":"strong"}]},{"text":". You should have write permissions as ","type":"text"},{"text":"owner","type":"text","marks":[{"type":"code"}]},{"text":" for this folder.","type":"text"}]},{"type":"codeBlock","content":[{"text":"# drwxr-sr-x 2

4096 May 16 16:26 ","type":"text"}]}]},{"type":"panel","attrs":{"panelType":"info"},"content":[{"type":"paragraph","content":[{"text":"2. Can you ","type":"text"},{"text":"/project//intro_to_linux/","type":"text","marks":[{"type":"code"}]},{"text":" and view ","type":"text"},{"text":"workshop_all.txt","type":"text","marks":[{"type":"code"}]},{"text":"?","type":"text"}]}]},{"type":"expand","attrs":{"title":"Answer"},"content":[{"type":"codeBlock","content":[{"text":"[]$ cd ../intro_to_linux\n[intro_to_linux]$ cat workshop_all.txt\n# Do you get a “Permission denied”?","type":"text"}]},{"type":"paragraph","content":[{"text":"Yes","type":"text","marks":[{"type":"strong"}]},{"text":". Everybody can read this.","type":"text"}]},{"type":"codeBlock","content":[{"text":"-rw-r--r-- 1

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