Here are several different ways to test a TCP port without telnet.
BASH (man page)
$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C
$ cat < /dev/tcp/127.0.0.1/23
/* ~/Library/KeyBindings/DefaultKeyBinding.Dict | |
This file remaps the key bindings of a single user on Mac OS X 10.5 to more | |
closely match default behavior on Windows systems. This makes the Command key | |
behave like Windows Control key. To use Control instead of Command, either swap | |
Control and Command in Apple->System Preferences->Keyboard->Modifier Keys... | |
or replace @ with ^ in this file. | |
Here is a rough cheatsheet for syntax. | |
Key Modifiers |
<?xml version="1.0" encoding="UTF-8"?> | |
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | |
<plist version="1.0"> | |
<dict> | |
<key>method</key> | |
<string>app-store</string> | |
<key>teamID</key> | |
<string>XXXXXXXXXX</string> | |
<key>uploadBitcode</key> | |
<true/> |
// Related to https://issues.jenkins-ci.org/browse/JENKINS-26481 | |
abcs = ['a', 'b', 'c'] | |
node('master') { | |
stage('Test 1: loop of echo statements') { | |
echo_all(abcs) | |
} | |
stage('Test 2: loop of sh commands') { |
gem install --http-proxy http://user:[email protected]:8080 bundler |
#!/bin/bash | |
## Get the list of all the projects from Bitbucket account across all the pages | |
get_total_project_list () { | |
start=0 | |
total_project_list=() | |
is_last_page=false | |
while ! $is_last_page | |
do | |
response=$(curl -k -u $u -X GET -H "Content-type: application/json" $bitbucket_url/rest/api/1.0/projects?start=$start) 2>&1 |
Here are several different ways to test a TCP port without telnet.
$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C
$ cat < /dev/tcp/127.0.0.1/23
# Sample from @citizen428 https://dev.to/citizen428/comment/6cmh | |
FROM golang:alpine as build | |
RUN apk add --no-cache ca-certificates | |
WORKDIR /build | |
ADD . . | |
RUN CGO_ENABLED=0 GOOS=linux \ | |
go build -ldflags '-extldflags "-static"' -o app | |
FROM scratch | |
COPY --from=build /etc/ssl/certs/ca-certificates.crt \ |
#!/bin/bash | |
export AnException=100 | |
export AnotherException=101 | |
# start with a try | |
try | |
( # open a subshell !!! | |
echo "do something" | |
[ someErrorCondition ] && throw $AnException |
create different ssh key according the article Mac Set-Up Git
$ ssh-keygen -t rsa -C "[email protected]"