Shell - what does <<-'EOF' mean

Asked Jul 07 '16 at 06:57

Active Jul 07 '16 at 06:57

Viewed 251 times

I have used < file.txt to set a file as the standard input.

But I encountered a new one, <<-'EOF'， in this following command.

$ sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF

How should I understand <<-'word'

<< means what? (I know >> file1.txt means appending to the file, file1.txt)

does -'word' means setting word as the ending symbol?

Any links to references/documentations are appreciated~

asked Jul 07 '16 at 06:57

Shihao Xu

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this is called here document: http://tldp.org/LDP/abs/html/here-docs.html – ymonad Jul 07 '16 at 07:02
1

If you open `man bash` and search on `<<` or `<<-`, you will find a detailed explanation. – John1024 Jul 07 '16 at 07:16

Shell - what does <<-'EOF' mean

0 Answers0