{"id":1309,"date":"2024-04-29T14:59:12","date_gmt":"2024-04-29T06:59:12","guid":{"rendered":"https:\/\/www.qiangzhenshuai.com\/?p=1309"},"modified":"2024-07-27T15:35:35","modified_gmt":"2024-07-27T07:35:35","slug":"shell-for","status":"publish","type":"post","link":"https:\/\/www.qiangzhenshuai.com\/?p=1309","title":{"rendered":"SHELL-FOR"},"content":{"rendered":"

1.for \u5faa\u73af\u8be6\u89e3<\/span><\/h1>\n

for \u5faa\u73af\u8bed\u53e5\u7684\u4e00\u822c\u5f62\u5f0f\u4e3a\uff1a<\/p>\n

for (\u8868\u8fbe\u5f0f1; \u8868\u8fbe\u5f0f2; \u8868\u8fbe\u5f0f3)\u00a0{\u00a0\u8bed\u53e5;\u00a0}<\/p>\n

\u9996\u5148\u8981\u5f3a\u8c03\u4e24\u70b9\uff1a\u00a01) \u8868\u8fbe\u5f0f1\u3001\u8868\u8fbe\u5f0f2\u548c\u8868\u8fbe\u5f0f3\u4e4b\u95f4\u662f\u7528\u5206\u53f7;\u9694\u5f00\u7684\uff0c\u5343\u4e07\u4e0d\u8981\u5199\u6210\u9017\u53f7\u3002<\/p>\n

2)\u00a0for(\u8868\u8fbe\u5f0f1\uff1b\u8868\u8fbe\u5f0f2\uff1b\u8868\u8fbe\u5f0f3)\u7684\u540e\u9762\u5343\u4e07\u4e0d\u8981\u52a0\u5206\u53f7\uff0c\u5f88\u591a\u65b0\u624b\u90fd\u4f1a\u72af\u8fd9\u79cd\u9519\u8bef\u2014\u2014\u4f1a\u60c5\u4e0d\u81ea\u7981\u5730\u5728\u540e\u9762\u52a0\u5206\u53f7\u3002<\/p>\n

\u56e0\u4e3a for \u5faa\u73af\u53ea\u80fd\u63a7\u5236\u5230\u5176\u540e\u7684\u4e00\u6761\u8bed\u53e5\uff0c\u800c\u5728C\u8bed\u8a00\u4e2d\u5206\u53f7\u4e5f\u662f\u4e00\u4e2a\u8bed\u53e5\u2014\u2014\u7a7a\u8bed\u53e5\u3002\u6240\u4ee5\u5982\u679c\u5728\u540e\u9762\u52a0\u4e2a\u5206\u53f7\uff0c\u90a3\u4e48 for \u5faa\u73af\u5c31\u53ea\u80fd\u63a7\u5236\u5230\u8fd9\u4e2a\u5206\u53f7\uff0c\u4e0b\u9762\u5927\u62ec\u53f7\u91cc\u9762\u7684\u8bed\u53e5\u5c31\u4e0d\u5c5e\u4e8e for \u5faa\u73af\u4e86\u3002<\/p>\n

\u4e0b\u9762\u6765\u770b\u770b\u5b83\u7684\u6267\u884c\u8fc7\u7a0b\uff1a<\/p>\n

\u6c42\u89e3\u8868\u8fbe\u5f0f1\u3002<\/p>\n

\u6c42\u89e3\u8868\u8fbe\u5f0f2\u3002\u82e5\u5176\u503c\u4e3a\u771f\uff0c\u5219\u6267\u884c for \u8bed\u53e5\u4e2d\u6307\u5b9a\u7684\u5185\u5d4c\u8bed\u53e5\uff0c\u7136\u540e\u6267\u884c\u7b2c3\u6b65\uff1b\u82e5\u8868\u8fbe\u5f0f2\u503c\u4e3a\u5047\uff0c\u5219\u7ed3\u675f\u5faa\u73af\uff0c\u8f6c\u5230\u7b2c5\u6b65\u3002<\/p>\n

\u6c42\u89e3\u8868\u8fbe\u5f0f3\u3002<\/p>\n

\u8f6c\u56de\u4e0a\u9762\u7b2c2\u6b65\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n

\u5faa\u73af\u7ed3\u675f\uff0c\u6267\u884c for \u8bed\u53e5\u4e0b\u9762\u7684\u8bed\u53e5\u3002<\/p>\n

\u4ece\u8fd9\u4e2a\u6267\u884c\u8fc7\u7a0b\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u201c\u8868\u8fbe\u5f0f1\u201d\u53ea\u6267\u884c\u4e00\u6b21\uff0c\u5faa\u73af\u662f\u5728\u201c\u8868\u8fbe\u5f0f2\u201d\u201c\u8868\u8fbe\u5f0f3\u201d\u548c\u201c\u5185\u5d4c\u8bed\u53e5\u201d\u4e4b\u95f4\u8fdb\u884c\u7684\u3002<\/p>\n

for\u8bed\u53e5\u6700\u7b80\u5355\u7684\u5f62\u5f0f\u662f\uff1a
\nfor (\u5faa\u73af\u53d8\u91cf\u8d4b\u521d\u503c; \u5faa\u73af\u6761\u4ef6; \u5faa\u73af\u53d8\u91cf\u589e\u503c)\u00a0{\u00a0\u8bed\u53e5;\u00a0}<\/p>\n

2.<\/strong>for\u5faa\u73af\u7684\u4e24\u79cd\u8bed\u6cd5<\/h1>\n

\u57fa\u672c\u8bed\u6cd5<\/h2>\n
\n
for \u81ea\u5b9a\u4e49\u53d8\u91cf\u540d in \u5143\u7d20\u5217\u8868\uff1bdo\r\n        ......\r\ndone<\/pre>\n<\/div>\n
\u53d6\u5143\u7d20\u5217\u8868\u4e2d\u7684\u6210\u5458\uff0c\u6bcf\u53d6\u4e00\u4e2a\u6267\u884c……\u4f4d\u7f6e\u6240\u5199\u7684\u4ee3\u7801\u3002\u76f4\u5230\u53d6\u5b8c\u7ed3\u675f\u3002<\/p>\n
\u4e0b\u9762\u5217\u4e00\u4e0b\u8fd9\u79cd\u8bed\u6cd5\u7684\u5e38\u7528\u683c\u5f0f<\/h4>\n
for line in $(ls) #\u5bf9ls\u7684\u7ed3\u679c\u8fdb\u884c\u5faa\u73af\u6267\u884c
\nfor file in \/home\/test\/* #\u5bf9\/home\/test\/\u4e0b\u6240\u6709\u7684\u6587\u4ef6\u548c\u6587\u4ef6\u5939\u6267\u884c\u5faa\u73af
\nfor n in $(seq 1 10) #\u5bf91-10\u4e2d\u6bcf\u4e00\u4e2a\u6570\u636e\u8fdb\u884c\u5faa\u73af\uff0c\u521a\u624d\u5df2\u7ecf\u8bb2\u5230\u8fc7\u3002
\nfor log in \/log\/*.log #\u5bf9\/log\/\u76ee\u5f55\u4e2d\u6240\u6709\u4ee5.log\u7ed3\u5c3e\u7684\u6587\u4ef6\u8fdb\u884c\u5faa\u73af\u3002
\nfor n in {1\u202610} #\u5bf91-10\u4e2d\u6bcf\u4e00\u4e2a\u6570\u636e\u8fdb\u884c\u5faa\u73af
\nfor Iine in $(< file) #\u5bf9file\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u6bcf\u4e00\u884c\u6267\u884c\u5faa\u73af
\nfor arg in “$@” #\u5bf9\u4f20\u5165\u7684\u53c2\u6570\u8fdb\u884c\u5faa\u73af<\/p>\n
bash\u652f\u6301\u7684\u8bed\u6cd5<\/h2>\n
\n
#!\/bin\/bash\r\nfor ((i=1; i<10; i++));do\r\n        echo $i\r\ndone<\/pre>\n<\/div>\n
\u4e0a\u9762\u5c31\u662f\u7c7bC\u7684\u5faa\u73af\u8bed\u6cd5\u3002\u4e5f\u5f88\u5e38\u7528<\/p>\n
shell\u811a\u672c\u4e2d\u51e0\u4e2a\u7279\u6b8a\u7684\u6307\u4ee4<\/h4>\n
$@: \u6240\u6709\u547d\u4ee4\u884c\u4f20\u5165\u7684\u53c2\u6570\u6216\u8005\u7ed9\u51fd\u6570\u4f20\u5165\u7684\u53c2\u6570\u5185\u5bb9
\n$#: \u4f20\u5165\u53c2\u6570\u7684\u4e2a\u6570
\n$0: \u6587\u4ef6\u540d,\u662f\u6307\u8fd9\u4e2a\u811a\u672c\u7684\u540d\u5b57
\n$n: \u53d6\u4f20\u5165\u7684\u53c2\u6570\u7684\u7b2c\u51e0\u4e2a\u53c2\u6570\u7684\u5185\u5bb9\u3002
\n$*: \u6240\u6709\u547d\u4ee4\u884c\u4f20\u5165\u7684\u53c2\u6570\u6216\u8005\u7ed9\u51fd\u6570\u4f20\u5165\u7684\u53c2\u6570\u5185\u5bb9<\/p>\n
3.\u6848\u4f8b<\/h1>\n
\u4ece1\u52a0\u5230100<\/h4>\n
[root@shell \/server\/scripts]$ cat for100.sh
\n#!\/bin\/sh
\nfor i in `echo {1..100}`
\ndo
\nlet count=$[$count+$i]
\ndone
\necho $count
\n[root@shell \/server\/scripts]$ sh for100.sh
\n5050<\/p>\n
#!\/bin\/bash
\n<\/span> sum<\/span>=0
\n# \u4f7f\u7528for\u5faa\u73af\u4ece1\u52a0\u5230100
\n<\/span> for<\/span> (( i=1<\/span>; i<=100<\/span>; i++ ))
\ndo<\/span>
\nsum<\/span>=$((sum + i))
\ndone<\/span>
\necho<\/span> “\u4ece1\u52a0\u5230100\u7684\u603b\u548c\u662f: $sum<\/span>“<\/span><\/p>\n
\u6279\u91cf\u83b7\u53d610.0.0.0\/24\u4f4d\u7684\u5728\u7ebf\u7684\u4e3b\u673a \u53ef\u4ee5ping\u901a\u5219\u8ba4\u4e3a\u5728\u7ebf<\/h4>\n
[root@shell \/server\/scripts]$ cat forip.sh
\n#!\/bin\/sh
\nfor i in `seq 254`
\ndo
\n{
\nIP=10.0.0.$i
\nping -c1 -W1 $IP &>\/dev\/null
\nif [ $? -eq 0 ];then
\necho “$IP \u5728\u7ebf”
\nfi } &<\/p>\n
done
\nwait
\necho “\u5728\u7ebf\u53d6IP\u5b8c\u6210…………….”
\n[root@shell \/server\/scripts]$ sh forip.sh
\n10.0.0.65 \u5728\u7ebf
\n10.0.0.56 \u5728\u7ebf
\n10.0.0.2 \u5728\u7ebf
\n\u5728\u7ebf\u53d6IP\u5b8c\u6210…………….<\/p>\n
wait\u547d\u4ee4\u7528\u4e8e\u7b49\u5f85\u6240\u6709\u5728\u540e\u53f0\u6267\u884c\u7684\u5b50\u8fdb\u7a0b\uff08\u5373\u901a\u8fc7&\u7b26\u53f7\u653e\u5165\u540e\u53f0\u6267\u884c\u7684\u547d\u4ee4\uff09\u6267\u884c\u5b8c\u6bd5\u540e\u518d\u7ee7\u7eed\u6267\u884c\u811a\u672c\u4e2d\u7684\u540e\u7eed\u547d\u4ee4\u3002\u5728\u8fd9\u4e2a\u811a\u672c\u4e2d\uff0cwait\u547d\u4ee4\u7684\u4f5c\u7528\u662f\u7b49\u5f85\u6240\u6709ping\u547d\u4ee4\uff08\u7528\u4e8e\u68c0\u67e5IP\u5730\u5740\u5728\u7ebf\u72b6\u6001\uff09\u6267\u884c\u5b8c\u6bd5\u540e\u518d\u8f93\u51fa”\u5728\u7ebfIP\u53d6\u5b8c\u6210”\u3002<\/p>\n
\u521b\u5efa\u5220\u9664\u7528\u6237<\/h4>\n
[root@shell \/server\/scripts]$ cat foruser.sh<\/div>\n
#!\/bin\/sh<\/div>\n
read -p “\u8bf7\u8f93\u5165\u7528\u6237\u540d\u7684\u524d\u7f00: ” prefix<\/div>\n
read -p “\u8bf7\u8f93\u5165\u7528\u6237\u7684\u4e2a\u6570: ” num<\/div>\n
for i in `seq $num`<\/div>\n
do<\/div>\n
\u00a0 \u00a0echo ${prefix}$i<\/div>\n
done<\/div>\n
echo “1.\u5220\u9664”<\/div>\n
echo “2.\u521b\u5efa”<\/div>\n
read -p “\u8bf7\u9009\u62e9\u5220\u9664\u4ee5\u4e0a\u7528\u6237\u6216\u8005\u662f\u521b\u5efa\u7528\u6237: ” num1<\/div>\n
if [ $num1 -eq 2 ];then<\/div>\n
read -p “\u4f60\u786e\u5b9a\u8981\u521b\u5efa\u4ee5\u4e0a\u7528\u6237\u5417?[y|Y|yes|n|N|NO]: ” re<\/div>\n
case $re in<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 y|Y|yes|YES)<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 for a in `seq $num`<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 do<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 user=${prefix}$a<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 id $user &>\/dev\/null<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if [ $? -eq 0 ];then<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 echo “\u7528\u6237\u5b58\u5728”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 useradd\u00a0 $user<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if [ $? -eq 0 ];then<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 echo “$user \u521b\u5efa\u6210\u529f”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 fi<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 fi<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 done<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ;;<\/div>\n
\u00a0 n|N|no|NO)<\/div>\n
\u00a0 \u00a0echo “\u73a9\u5565\u5462”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ;;<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 *)<\/div>\n
\u00a0 \u00a0echo “USAGE $0 [y|Y|n|N]”<\/div>\n
esac<\/div>\n
elif [ $num1 -eq 1 ];then<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 for b in `seq $num`<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 do<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 user=${prefix}$b<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 id $user &>\/dev\/null<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if [ $? -eq 0 ];then<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0userdel -r $user<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0if [\u00a0 $? -eq 0 ];then<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0echo “$user \u5220\u9664\u6210\u529f”<\/div>\n
fi<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 else<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 echo “\u7528\u6237\u4e0d\u5b58\u5728”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 fi<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 done<\/div>\n
fi<\/div>\n
<\/div>\n
[root@shell \/server\/scripts]$ sh foruser.sh
\n\u8bf7\u8f93\u5165\u7528\u6237\u540d\u7684\u524d\u7f00: qiang
\n\u8bf7\u8f93\u5165\u7528\u6237\u7684\u4e2a\u6570: 2
\nqiang1
\nqiang2
\n1.\u5220\u9664
\n2.\u521b\u5efa
\n\u8bf7\u9009\u62e9\u5220\u9664\u4ee5\u4e0a\u7528\u6237\u6216\u8005\u662f\u521b\u5efa\u7528\u6237: 2
\n\u4f60\u786e\u5b9a\u8981\u521b\u5efa\u4ee5\u4e0a\u7528\u6237\u5417?[y|Y|yes|n|N|NO]: y
\nqiang1 \u521b\u5efa\u6210\u529f
\nqiang2 \u521b\u5efa\u6210\u529f<\/div>\n
[root@shell \/server\/scripts]$ sh foruser.sh
\n\u8bf7\u8f93\u5165\u7528\u6237\u540d\u7684\u524d\u7f00: qiang
\n\u8bf7\u8f93\u5165\u7528\u6237\u7684\u4e2a\u6570: 2
\nqiang1
\nqiang2
\n1.\u5220\u9664
\n2.\u521b\u5efa
\n\u8bf7\u9009\u62e9\u5220\u9664\u4ee5\u4e0a\u7528\u6237\u6216\u8005\u662f\u521b\u5efa\u7528\u6237: 1
\nqiang1 \u5220\u9664\u6210\u529f
\nqiang2 \u5220\u9664\u6210\u529f<\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
1.for \u5faa\u73af\u8be6\u89e3 for \u5faa\u73af\u8bed\u53e5\u7684\u4e00\u822c\u5f62\u5f0f\u4e3a\uff1a for (\u8868\u8fbe\u5f0f1; \u8868\u8fbe\u5f0f2; \u8868\u8fbe\u5f0f3)\u00a0{\u00a0\u8bed\u53e5; […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[25],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1309"}],"collection":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1309"}],"version-history":[{"count":7,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1309\/revisions"}],"predecessor-version":[{"id":1344,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=\/wp\/v2\/posts\/1309\/revisions\/1344"}],"wp:attachment":[{"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.qiangzhenshuai.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}