README.md

QEMU notes

Table of Contents

[[TOC]]

Description

Sometimes remembering exact syntax or options of a command or tool. This is an effort to compile that information into central repository. For example:

• You know that find can execute commmands on found files, but forgot the syntax?
  Was it -exec <command> {}; or -exec <command> {}\;?
  Was there a space?
• Or that handy rsync option?
• How did I suppose to redirect both output and error into?
  2&1> or 2>&1?

Find

Execute a command on found files

find . -type f -[i]name '*.txt' -exec grep -q 'hello' {} ';'

-type <letter>. letter can be:

• b -> block
• f -> regular file
• d -> directory
• l -> symbolic link

-name <pattern> -> file name(not directory) in shell patern format to match
-iname -> insensitive name

-exec <command> [{}] ';|+'

References

• https://unix.stackexchange.com/questions/389705/understanding-the-exec-option-of-find/389706#389706

Pacman

Find files installed by a package

$ pacman -Ql pacman|grep /usr/bin/
pacman /usr/bin/makepkg
pacman /usr/bin/makepkg-template
pacman /usr/bin/pacman
pacman /usr/bin/pacman-conf
pacman /usr/bin/pacman-db-upgrade
pacman /usr/bin/pacman-key
pacman /usr/bin/repo-add
pacman /usr/bin/repo-elephant
pacman /usr/bin/repo-remove
pacman /usr/bin/testpkg
pacman /usr/bin/vercmp

Awk

Sed

Vim

Grep

Lxc

Docker

Ansible

Qemu

References