背景
- 雖然curl與wget是2個不同等級的程式，但在下載應用領域何者更為方便、穩定，還有一番論戰。
斷點續傳
curl 斷點續傳
#continue from last position(-)
# Object and Location redirectted(if so)
curl -C - -OL https://...
#number of retrials
curl --retry 5 -C - -OL https://...
wget 斷點續傳
| opt | value | meaning | command |
|---|---|---|---|
| -w | –wait=秒數(min,hour,day) | 每次下載檔案之前等待指定秒數 | |
| - | –waitretry=秒數 | 每次重覆嘗試前稍等一段時間 (由暫停1秒增加至指定秒數) | |
| - | –random-wait | 每次下載之前隨機地指定等待的時間 | |
| - | –retry-connrefused(on/off) | 針對不太穩定的伺服器 | |
| -t | –tries=10 | number of retries, 0 or inf for infinite retrying |
How to retry connections with wget? on https://superuser.com/
while [ 1 ]; do
wget --retry-connrefused --waitretry=1 --read-timeout=20 --timeout=15 -t 0 --continue
if [ $? = 0 ]; then break; fi; # check return value, break if successful (0)
sleep 1s;
done;
Silent/quiet
curl silent
# Hide Errors and Progress Bar (but Print Response)
curl -s https://...
curl --silent https://...
# Dead Silent
curl -s -o /dev/null https://...
# Dead Silent except the Error
curl -S -s -o /dev/null https://...
wget quiet
# Turn off verbose
wget -nv https://...
wget --no-verbose https://...
# completely quiet
wget -q https://...
wget --quiet https://...