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zsh: only export SSH_AUTH_SOCK when the socket exists #26

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zsh: only export SSH_AUTH_SOCK when the socket exists #26

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10 changes: 9 additions & 1 deletion prestobuntu.zsh
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,14 @@ alias Ga='git add'
# Fix ssh-agent for screen
# https://gist.github.com/martijnvermaat/8070533#gistcomment-1317075
if [[ -S "$SSH_AUTH_SOCK" && ! -h "$SSH_AUTH_SOCK" ]]; then
mkdir -p ~/.ssh
ln -sf "$SSH_AUTH_SOCK" ~/.ssh/ssh_auth_sock
fi
export SSH_AUTH_SOCK=~/.ssh/ssh_auth_sock

# Only adopt the stable symlink if it resolves to a live socket (-S
# follows symlinks). Exporting it unconditionally points SSH_AUTH_SOCK
# at a dangling path when no agent is running, which silently breaks
# agent forwarding into this shell.
if [[ -S ~/.ssh/ssh_auth_sock ]]; then
export SSH_AUTH_SOCK=~/.ssh/ssh_auth_sock
fi