Issues

• 22.Exercise 7: run-everywhere.sh remote command runner over SSH

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  dev000000/LSS_JC#22 · Filter by author dev000000 opened on Oct 18, 2026
  

• 21.Mini network & remote commands: Vagrant multi-VM, SSH keys

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  dev000000/LSS_JC#21 · Filter by author dev000000 opened on Oct 18, 2026
  

• 20.Sed: substitute, delete, in-place edit & addresses

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  dev000000/LSS_JC#20 · Filter by author dev000000 opened on Oct 18, 2026
  

• 19.Exercise 6: show-attackers.sh failed-login report by IP & location

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  dev000000/LSS_JC#19 · Filter by author dev000000 opened on Oct 11, 2026
  

• 18.Sort and uniq: sort, count & rank data

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  dev000000/LSS_JC#18 · Filter by author dev000000 opened on Oct 10, 2026
  

• 17.Cut and awk: extract columns by byte, char, field & whitespace

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  dev000000/LSS_JC#17 · Filter by author dev000000 opened on Oct 9, 2026
  

• 16.Exercise 5: disable-local-user.sh account disable/delete/archive script

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  dev000000/LSS_JC#16 · Filter by author dev000000 opened on Oct 7, 2026
  

• 15.Deleting & disabling Linux accounts (Part 1-4): find, userdel, tar, chage

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  dev000000/LSS_JC#15 · Filter by author dev000000 opened on Oct 6, 2026
  

• 14.Parsing command line options with getopts (Part 1 & 2)

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  dev000000/LSS_JC#14 · Filter by author dev000000 opened on Oct 4, 2026
  

• 13.Functions: DRY, local scope, arguments, return & exit status

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  dev000000/LSS_JC#13 · Filter by author dev000000 opened on Oct 3, 2026
  

• 12.The case statement: decisions by value, pattern matching & style

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  dev000000/LSS_JC#12 · Filter by author dev000000 opened on Oct 1, 2026
  

• 11.Exercise 4: redirect errors to STDERR & suppress passwd output

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  dev000000/LSS_JC#11 · Filter by author dev000000 opened on Oct 1, 2026
  

• 10.I/O redirection: STDOUT/STDIN basics, file descriptors & STDERR

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  dev000000/LSS_JC#10 · Filter by author dev000000 opened on Sep 29, 2026
  

• 9.Exercise 3: add-new-local-user.sh with auto password & CLI args

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  dev000000/LSS_JC#9 · Filter by author dev000000 opened on Sep 28, 2026
  

• 8.while loops, shifting & sleeping

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  dev000000/LSS_JC#8 · Filter by author dev000000 opened on Sep 27, 2026
  

• 7.Positional parameters, arguments & for loops

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  dev000000/LSS_JC#7 · Filter by author dev000000 opened on Sep 27, 2026
  

• 6.Random data, hashing & text manipulation: $RANDOM, date, checksums

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  dev000000/LSS_JC#6 · Filter by author dev000000 opened on Sep 26, 2026
  

• 5.Exercise 2: add-local-user.sh account creation script

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  dev000000/LSS_JC#5 · Filter by author dev000000 opened on Sep 23, 2026
  

• 4.Reading input, creating accounts & username conventions

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  dev000000/LSS_JC#4 · Filter by author dev000000 opened on Sep 22, 2026
  

• 3.Exit statuses, return codes & string test conditionals

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  dev000000/LSS_JC#3 · Filter by author dev000000 opened on Sep 21, 2026
  

• 2.Special variables, conditionals & the if statement

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  dev000000/LSS_JC#2 · Filter by author dev000000 opened on Sep 21, 2026
  

• 1.Shell scripting basics: naming, permissions, variables, builtins

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  dev000000/LSS_JC#1 · Filter by author dev000000 opened on Sep 20, 2026