Skip to content

Add parallelism #6

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
svenfinke wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Add parallelism #6

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
33 changes: 32 additions & 1 deletion README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
- [Useful readline tricks](#useful-readline-tricks)
- [Repeat command](#repeat-command)
- [Substrings](#substrings)
- [Parallelism](#parallelism)
- [More resources](#more-resources)

## Switch to previous directory
Expand Down Expand Up @@ -244,7 +245,37 @@ Execute a command every two seconds and monitor its` output.
This is especially useful for waiting until a deployment or infrastructure provisioning is completed, i.e. on aws.

`watch -n2 echo hello`
`

## Parallelism

### Run everything at once

```
task(){
sleep 0.5; echo "$1";
}

for thing in a b c d e f g; do
task "$thing" &
done
```

### Run N tasks in parallel

```
task(){
sleep 0.5; echo "$1";
}

N=4
(
for thing in a b c d e f g; do
((i=i%N)); ((i++==0)) && wait
task "$thing" &
done
)
```

## Substrings

```
Expand Down