{"id":185,"date":"2019-09-10T19:34:55","date_gmt":"2019-09-10T11:34:55","guid":{"rendered":"https:\/\/freeapp.sbs\/blog\/?p=185"},"modified":"2025-04-01T17:07:14","modified_gmt":"2025-04-01T08:07:14","slug":"zunj5cw4s7favyb","status":"publish","type":"post","link":"https:\/\/eternalsphere.net\/echoes\/index.php\/2019\/09\/10\/zunj5cw4s7favyb\/","title":{"rendered":"\u5faa\u73af"},"content":{"rendered":"

for\u5faa\u73af<\/p>\n

for…in…<\/p>\n

do<\/p>\n

…<\/p>\n

done<\/p>\n

 <\/p>\n

for name<\/p>\n

do<\/p>\n

case $name in<\/p>\n

-f)…<\/p>\n

-d)…<\/p>\n

esac<\/p>\n

done<\/p>\n

 <\/p>\n

while\u5faa\u73af\uff08\u5f53\u6761\u4ef6\u4e3a\u771f\uff09<\/p>\n

while condition<\/p>\n

do<\/p>\n

statements…<\/p>\n

done<\/p>\n

 <\/p>\n

until\u5faa\u73af\uff08\u76f4\u5230\u6761\u4ef6\u4e3a\u771f\uff09<\/p>\n

until condition<\/p>\n

do<\/p>\n

statements…<\/p>\n

done<\/p>\n

 <\/p>\n

\u904d\u5386PATH\u8def\u5f84<\/p>\n

path=$PATH \u00a0\u00a0\u00a0#\u53d8\u91cf\u58f0\u660e<\/p>\n

while [ -n $PATH ] \u00a0\u00a0\u00a0#\u5f53\u53d8\u91cf\u4e0d\u4e3a\u7a7a\u65f6<\/p>\n

do<\/p>\n

ls -ld ${path%%:*} \u00a0\u00a0\u00a0#\u4ee5ls -ld\u5217\u51fapath\u7b2c\u4e00\u4e2a\u76ee\u5f55<\/p>\n

path=${path#*:} \u00a0\u00a0\u00a0#\u622a\u53bb\u7b2c\u4e00\u4e2a\u76ee\u5f55\u548c\u5192\u53f7<\/p>\n

done<\/p>\n

 <\/p>\n

\u8df3\u51fa\u5faa\u73af break<\/p>\n

path=$PATH<\/p>\n

while true<\/p>\n

do<\/p>\n

if [ -z $path ]<\/p>\n

then<\/p>\n

break<\/p>\n

fi<\/p>\n

ls -ld ${path%%:*}<\/p>\n

path=${path#*:}<\/p>\n

done<\/p>\n

 <\/p>\n

\u82e5\u5faa\u73af\u4f53\u8d85\u8fc7\u4e00\u5c42\uff0c\u5982\u6b64<\/p>\n

while condition1<\/p>\n

do<\/p>\n

while condition2<\/p>\n

do<\/p>\n

break2<\/p>\n

done<\/p>\n

done<\/p>\n","protected":false},"excerpt":{"rendered":"

for\u5faa\u73af for…in… do … done   for name do case $name in -f)… -d)… esac done   while\u5faa\u73af\uff08\u5f53\u6761\u4ef6\u4e3a\u771f\uff09 while condition do statements… done   until\u5faa\u73af\uff08\u76f4\u5230\u6761\u4ef6\u4e3a\u771f\uff09 until condition do statements… done   \u904d\u5386PATH\u8def\u5f84 path=$PATH \u00a0\u00a0\u00a0#\u53d8\u91cf\u58f0\u660e while [ -n $PATH ] \u00a0\u00a0\u00a0#\u5f53\u53d8\u91cf\u4e0d\u4e3a\u7a7a\u65f6 do ls -ld ${path%%:*} \u00a0\u00a0\u00a0#\u4ee5ls -ld\u5217\u51fapath\u7b2c\u4e00\u4e2a\u76ee\u5f55 path=${path#*:} \u00a0\u00a0\u00a0#\u622a\u53bb\u7b2c\u4e00\u4e2a\u76ee\u5f55\u548c\u5192\u53f7 done   …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[],"class_list":["post-185","post","type-post","status-publish","format-standard","hentry","category-bdobq3k1tczue"],"_links":{"self":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/comments?post=185"}],"version-history":[{"count":1,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/185\/revisions"}],"predecessor-version":[{"id":2323,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/185\/revisions\/2323"}],"wp:attachment":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/media?parent=185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/categories?post=185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/tags?post=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}