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‏‏‎ Eating github stars for breakfast.

Andrzej Rehmann hoto

‏‏‎ Eating github stars for breakfast.
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hoto /
Created Aug 10, 2017 — forked from hrwgc/
bash wget - check if file exists at url before downloading
# simple function to check http response code before downloading a remote file
# example usage:
# if `validate_url $url >/dev/null`; then dosomething; else echo "does not exist"; fi
function validate_url(){
if [[ `wget -S --spider $1 2>&1 | grep 'HTTP/1.1 200 OK'` ]]; then echo "true"; fi
hoto / systemd-prblm.service
Created Jun 27, 2017 — forked from nickjacob/systemd-prblm.service
execute arbitrary bash code/variable substitution in systemd units
View systemd-prblm.service
Description=Demonstrate Bash
ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl set-environment MYVAR=$(( 2 + 2 ))"
ExecStart=/usr/bin/ech "2 + 2 = ${MYVAR}"
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