{"id":248,"date":"2014-06-29T09:53:48","date_gmt":"2014-06-29T09:53:48","guid":{"rendered":"http:\/\/ixyzero.com\/blog\/?p=248"},"modified":"2014-06-29T09:53:48","modified_gmt":"2014-06-29T09:53:48","slug":"shell%e8%84%9a%e6%9c%ac%e4%b8%ad%e5%b8%b8%e7%94%a8%e7%9a%84%e6%8e%a7%e5%88%b6%e7%bb%93%e6%9e%84-shell%e5%be%aa%e7%8e%af","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/248.html","title":{"rendered":"SHELL\u811a\u672c\u4e2d\u5e38\u7528\u7684\u63a7\u5236\u7ed3\u6784 & Shell\u5faa\u73af"},"content":{"rendered":"

\u4ece\u7f51\u4e0a\u6536\u96c6\u800c\u6765\uff0c\u81ea\u5df1\u5b66\u4e60\u7684\u540c\u65f6\u4e5f\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u5907\u4efd\u4ee5\u4f9b\u968f\u65f6\u53c2\u8003\uff1a<\/p>\n

\n
if … then\u8bed\u53e5<\/h6>\n
\n
if [ test_command ]\nthen\ncommands\nfi<\/pre>\n
if … then … else\u8bed\u53e5<\/h6>\n
if [ test_command ]\nthen\n  commands\nelse\n  commands\nfi<\/pre>\n
if … then … elif … (else)\u8bed\u53e5<\/h6>\n
\n
if [ test_command ]\nthen\n  commands\nelif [ test_command ]\nthen\n  commands\n...\n...\nelse (optional)\n  commands\nfi<\/pre>\n<\/div>\n
for … in\u8bed\u53e5<\/h6>\n
\n
for \u53d8\u91cf in\u00a0\u53d8\u91cf\u5217\u8868\ndo\n  commands\ndone<\/pre>\n<\/div>\n
while\u8bed\u53e5<\/h6>\n
\n
while \u6761\u4ef6\u4e3a\u771f\ndo\n  commands\ndone<\/pre>\n<\/div>\n
\n
until\u8bed\u53e5<\/h6>\n<\/div>\n
\n
until \u6761\u4ef6\u4e3a\u771f\ndo\n  commands\ndone<\/pre>\n<\/div>\n
\n
case\u8bed\u53e5<\/h6>\n<\/div>\n
\n
case $variable in\nmatch_1)\ncommands_to_execute_for_1\n;;\nmatch_2)\ncommands_to_execute_for_2\n;;\nmatch_3)\ncommands_to_execute_for_3\n;;\n...\n...\n*) (\u53ef\u9009 - any other value)\ncommands_to_execute_for_no_match\n;;\nesac<\/pre>\n<\/div>\n
\u6765\u6e90\uff1a\u00a0<http:\/\/blog.csdn.net\/jubincn\/article\/details\/7288632<\/a>><\/small><\/small><\/small><\/p>\n
\n<\/div>\n<\/div>\n
Shell\u5faa\u73af<\/h5>\n
\n
#\u6570\u5b57\u6bb5\u5f62\u5f0f
\n<\/span><\/strong>for i in {1..10}
\ndo
\necho $i
\ndone<\/p>\n
#\u8be6\u7ec6\u5217\u51fa\uff08\u5b57\u7b26\u4e14\u9879\u6570\u4e0d\u591a\uff09<\/span><\/strong>
\nfor File in 1 2 3 4 5
\ndo
\necho $File
\ndone<\/p>\n
#\u5bf9\u5b58\u5728\u7684\u6587\u4ef6\u8fdb\u884c\u5faa\u73af
\n<\/span><\/strong>for shname in `ls *.sh`
\ndo
\nname=`echo “$shname” | awk -F. ‘{print $1}’`
\necho $name
\ndone<\/p>\n
#\u67e5\u627e\u5faa\u73af\uff08ls\u6570\u636e\u91cf\u592a\u5927\u7684\u65f6\u5019\u4e5f\u53ef\u4ee5\u7528\u8fd9\u79cd\u65b9\u6cd5\uff09
\n<\/span><\/strong>for shname in `find . -type f -name “*.sh”`
\ndo
\nname=`echo “$shname” | awk -F\/ ‘{print $2}’`
\necho $name
\ndone<\/p>\n
#(())\u8bed\u6cd5\u5faa\u73af<\/span><\/strong>–\u6709\u70b9\u50cfC\u8bed\u6cd5\uff0c\u4f46\u8bb0\u5f97\u53cc\u62ec\u53f7
\nfor((i=1;i<100;i++))
\ndo
\nif((i%3==0))
\nthen
\necho $i
\ncontinue
\nfi
\ndone<\/p>\n
#seq\u5f62\u5f0f \u8d77\u59cb\u4ece1\u5f00\u59cb
\n<\/span><\/strong>for i in `seq 100`
\ndo
\nif((i%3==0))
\nthen
\necho $i
\ncontinue
\nfi
\ndone<\/p>\n
#while\u5faa\u73af\u6ce8\u610f\u4e3a\u65b9\u62ec\u53f7[]\uff0c\u4e14\u6ce8\u610f\u7a7a\u683c<\/span><\/strong>
\nmin=1
\nmax=100
\nwhile [ $min -le $max ]
\ndo
\necho $min
\nmin=`expr $min + 1`
\ndone<\/p>\n
#\u53cc\u62ec\u53f7\u5f62\u5f0f\uff0c\u5185\u90e8\u7ed3\u6784\u6709\u70b9\u50cfC\u7684\u8bed\u6cd5\uff0c\u6ce8\u610f\u8d4b\u503c\uff1ai=$(($i+1))
\n<\/span><\/strong>i=1
\nwhile(($i<100))
\ndo
\nif(($i%4==0))
\nthen
\necho $i
\nfi
\ni=$(($i+1))
\ndone<\/p>\n
\n
\n
\u6574\u4f53\u793a\u4f8b\u5982\u4e0b\uff1a<\/h6>\n
#!\/bin\/bash\n\nfor((i=0; i<10; i++));do\n\techo $(expr $i * 4)\ndone\n\nfor i in $(seq 10);do\n\techo $i\ndone\n\ni=1\nwhile(($i<10));do\n\techo $i\n\ti=`expr $i + 1`\ndone\n\nfor i in {1..10};do\n\techo $i\ndone\n\nfor i in {01..10};do\n\techo $i\ndone\n\nfor i in {a..z};do\n\techo $i\ndone\n\nfor i in $(ls);do\n\techo $i\ndone\n\nfor i in `ls`;do\n\techo $i\ndone\n\nfor i in f1 f2 f3;do\n\techo $i\ndone\n\ncat \/tmp\/drops.txt | while read url title\ndo\n    title=$(echo $title | tr ' <\/' '_')\n    curl -s $url | sed -n '\/<div id=\"content\">\/,\/entry-tags\/p' >\/tmp\/tmp.html\n    cat \/tmp\/top.html \/tmp\/tmp.html \/tmp\/bottom.html >\/tmp\/$title.html\ndone\n\nwhile read url title\ndo\n    title=$(echo $title | tr ' <\/' '_')\n    curl -s $url | sed -n '\/<div id=\"content\">\/,\/entry-tags\/p' >\/tmp\/tmp.html\n    cat \/tmp\/top.html \/tmp\/tmp.html \/tmp\/bottom.html >\/tmp\/$title.html\ndone < \/tmp\/drops.txt\n\n####\ndir=(papers tips tools news web pentesting database binary)\ndir_num=${#dir[@]}\nfor((i=0;i<$dir_num;i++))\ndo\n\tfor j in $(seq 1 15)\n\tdo\n\tif [ \"$j\" == 1 ]\n\tthen\n\t\techo http:\/\/drops.wooyun.org\/category\/${dir[i]}\n\telse\n\t\techo http:\/\/drops.wooyun.org\/category\/${dir[i]}\/page\/$j\n\tfi\n\tdone\ndone\n####\n\narr=(\"a\" \"b\" \"c\")\necho \"arr is (${arr[@]})\"\n\narr=(a b c)\nfor i in ${arr[@]}\ndo\n\techo $i\ndone\n\n\necho \"\u53c2\u6570,$*\u8868\u793a\u811a\u672c\u8f93\u5165\u7684\u6240\u6709\u53c2\u6570\uff1a\"\nfor i in $* ; do\n\techo $i\ndone\n\nEGREP=\/bin\/egrep\nCOUNTRY=('cn' 'hk' 'tw')\nfor c in ${COUNTRY[@]}\ndo\n    wget \"http:\/\/www.ipdeny.com\/ipblocks\/data\/countries\/$c.zone\"\n    country_file=$c.zone\n    IPS=$($EGREP -v \"^#|^$\" $country_file)\n    for ip in $IPS\n    do\n        echo \"blocking $ip\"\n        iptables -A INPUT -s $ip -j DROP\n    done\ndone\n\n# SHELL\u6570\u7ec4\u8be6\u89e3\n# http:\/\/ixyzero.com\/blog\/archives\/178.html\n$ A=(a b c def)\n\n$ echo ${A[@]}\t\t#\u53d6\u5168\u90e8\u5143\u7d20\na b c def\n\n$ echo ${A[0]}\t\t#\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20\na\n\n$ echo ${#A[@]}\t\t#\u53d6\u5f97\u6570\u7ec4\u5143\u7d20\u7684\u4e2a\u6570\n4\n\n$ echo ${#A[3]}\t\t#\u53d6\u5f97\u7b2c4\u4e2a\u5143\u7d20\u7684\u957f\u5ea6\n3<\/pre>\n
 <\/p>\n
\u62d3\u5c55\u94fe\u63a5\uff1a<\/h6>\n