External Utilties
These are utilities that often don’t come included in various Linux distributions. Arch Linux tends to put them in the extra folder
type $(jq '.performer | type' <<<"$schema") type can be null, boolean, number, string, array or object.
has(key) https://github.com/shngli/Database-apps/tree/master/SQL
create table College(cName text, state text, enrollment int); create table Student(sID int, sName text, GPA real, sizeHS int); create table Apply(sID int, cName text, major text, decision text); insert into Student values (123, 'Amy', 3.9, 1000); insert into Student values (234, 'Bob', 3.6, 1500); insert into Student values (345, 'Craig', 3.5, 500); insert into Student values (456, 'Doris', 3.
Github
Learning git git help git help tutorial git help everyday git help revisions git help workflows GitHub manual
full commands list
configuration Default .git/conf
[core] repositoryformatversion = 0 filemode = true bare = false logallrefupdates = true [remote "origin"] url = /srv/git/myprojectname.git fetch = +refs/heads/*:refs/remotes/origin/* [branch "master"] remote = origin merge = refs/heads/master Assume the following history exists and the current branch is master:
D E A F B G m a C s t t e o r p i c D E A F B G C t o p H i c m a s t e r Glossary commit message current branch CVSConcurrent Versions System, a style which can be addopted by git if pull and fetch are used.
man page
Before I discovered the tree command, I wasted huge amounts of time manually making grapic directory listings.
$ tree ~/webapps/frontiersoftware /home/roblaing/webapps/frontiersoftware ├── archetypes │ └── default.md ├── assets ├── config │ └── _default │ └── hugo.json ├── content │ ├── bash │ │ ├── coreutils │ │ │ ├── _index.md │ │ │ └── sed │ │ │ ├── index.md │ │ │ └── spec │ │ │ ├── basics_spec.