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Introduction
Shells
1. zsh
2. bash
3. fish
CLI foo
1. awk
2. cut
3. sed
4. column
5. sort
6. tr
7. tac
8. rev
9. paste
10. xargs
11. grep
12. find
13. dd
Tools
1. tmux
2. screen
3. emacs
4. gpg
5. radare2
6. qemu
7. pacman
8. dot
9. ffmpeg
10. gnuplot
11. restic
12. qrencode
13. nix
Process management & inspection
1. lsof
2. pidstat
3. pgrep
4. ps
5. pmap
6. pstack
7. taskset
8. nice
Trace and Profile
Debug
1. gdb
2. gdbserver
Binary
1. od
2. xxd
3. readelf
4. objdump
5. nm
Development
1. c++filt
2. c++
3. glibc
4. gcc
5. gas
6. ld
7. git
8. cmake
9. make
10. ld.so
11. symbol versioning
12. python
13. gcov
14. pgo
Linux
Network
Web
Arch

Notes

tac(1)


# Reverse output lines of file(s) and concatenate (reverse of cat).
tac FILE [FILE]

echo -e 'a1\nb2\nc3\nd4' | tac
# d4
# c3
# b2
# a1