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Comment about more basic way to check connectivity

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This commit is contained in:
Eric Keller 2017-09-02 19:38:45 +02:00
parent 0b1716e5cd
commit cc69e1cee2
1 changed files with 3 additions and 0 deletions
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tools/check_for_upgrade.sh
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@ -23,6 +23,9 @@ function _upgrade_zsh() {
# -L follow redirect, -s silent, # -L follow redirect, -s silent,
# --max-time overall operation timeout, -I only download headers # --max-time overall operation timeout, -I only download headers
whence curl > /dev/null && curl -L -s --max-time 3 -I ${REMOTE} > /dev/null || return 0 whence curl > /dev/null && curl -L -s --max-time 3 -I ${REMOTE} > /dev/null || return 0
# the curl call could be replaced by:
# `ping -q -c 1 -W 1 8.8.8.8 >/dev/null` without DNS resolution
# or `ping -q -c 1 -W 1 github.com >/dev/null`
env ZSH=$ZSH sh $ZSH/tools/upgrade.sh env ZSH=$ZSH sh $ZSH/tools/upgrade.sh
# update the zsh file # update the zsh file
_update_zsh_update _update_zsh_update