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Here the trick is to restore those file descriptors (0, 1, 2) that have been redirected (`dup2`) by the parent process. First we need to determine which one has been redirected, for example by looking at `ls -l /proc/$$/fd/`. Then we can use `0<&x`, `1>&x` or `2>&x` to restore 0, 1 or 2 respectively, where `x` is any file descriptor number that points to the TTY. It may happen that no file descriptor is unchanged, in that case we can use `tty` to perform the redirection: sh <$(tty) >$(tty) 2>$(tty)
20 lines
696 B
Markdown
20 lines
696 B
Markdown
---
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functions:
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execute-interactive:
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- code: |
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puppet apply -e "exec { '/bin/sh -c \"exec sh -i <$(tty) >$(tty) 2>$(tty)\"': }"
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file-write:
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- description: The file path must be absolute.
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code: |
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export LFILE="/tmp/file_to_write"
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puppet apply -e "file { '$LFILE': content => 'DATA' }"
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file-read:
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- description: The read file content is corrupted by the `diff` output format. The actual `/usr/bin/diff` command is executed.
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code: |
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export LFILE=file_to_read
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puppet filebucket -l diff /dev/null $LFILE
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sudo-enabled:
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- code: |
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sudo puppet apply -e "exec { '/bin/sh -c \"exec sh -i <$(tty) >$(tty) 2>$(tty)\"': }"
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---
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