Bash ´Â ´Ù¸¥ ÇÁ·Î±×·¡¹Ö ¾ð¾îµé°ú´Â ´Þ¸®, º¯¼ö¸¦ "ŸÀÔ"À¸·Î ±¸ºÐÇÏÁö ¾Ê½À´Ï´Ù. Bash º¯¼ö´Â º»ÁúÀûÀ¸·Î ¹®ÀÚ¿ÀÌÁö¸¸ Bash °¡ ¹®¸Æ¿¡ µû¶ó¼ Á¤¼ö ¿¬»êÀ̳ª º¯¼ö¸¦ ºñ±³ÇØ ÁÝ´Ï´Ù. ÀÌ µ¿ÀÛÀ» °áÁ¤Áþ´Â ¿ä¼Ò´Â ±× º¯¼ö°ªÀÌ ¼ýÀڷθ¸ µÇ¾î ÀÖ´Â³Ä ¾Æ´Ï³Ä ÀÔ´Ï´Ù.
¿¹ 5-4. Á¤¼ö? ¹®ÀÚ¿?
#!/bin/bash
# int-or-string.sh
# Á¤¼ö? ¹®ÀÚ¿?
a=2334 # Á¤¼ö.
let "a += 1"
echo "a = $a " # ¿©ÀüÈ÷ Á¤¼öÁÒ.
echo
b=${a/23/BB} # ¹®ÀÚ¿·Î º¯È¯.
echo "b = $b" # BB35
declare -i b # Á¤¼ö·Î ¼±¾ðÇØµµ µµ¿òÀÌ µÇÁú ¾ÊÁÒ.
echo "b = $b" # ¿©ÀüÈ÷ BB35.
let "b += 1" # BB35 + 1 =
echo "b = $b" # 1
echo
c=BB34
echo "c = $c" # BB34
d=${c/BB/23} # Á¤¼ö·Î º¯È¯.
echo "d = $d" # 2334
let "d += 1" # 2334 + 1 =
echo "d = $d" # 2335
# Bash ÀÇ º¯¼ö´Â º»ÁúÀûÀ¸·Î ŸÀÔÀÌ ¾ø½À´Ï´Ù(untyped).
exit 0 |
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Bash °¡ ÀÌ ÀϵéÀ» ÇØ ÁÖÁö ¾Ê±â ¶§¹®¿¡, ÇÁ·Î±×·¡¸Ó°¡ ½ºÅ©¸³Æ®¿¡¼ ¾²ÀÌ´Â º¯¼ö°¡ ¾î¶² ŸÀÔÀÎÁö °è¼Ó ±â¾ïÇϰí ÀÖ¾î¾ß ÇÕ´Ï´Ù.