{"id":394,"date":"2019-10-03T15:21:50","date_gmt":"2019-10-03T07:21:50","guid":{"rendered":"http:\/\/blog.cyszys.com\/?p=394"},"modified":"2019-10-03T15:21:52","modified_gmt":"2019-10-03T07:21:52","slug":"linux-shell%e8%84%9a%e6%9c%ac","status":"publish","type":"post","link":"http:\/\/blog.cyszys.com\/?p=394","title":{"rendered":"linux shell\u811a\u672c"},"content":{"rendered":"

\u8f6c\u81ea\uff1ahttps:\/\/www.cnblogs.com\/weijiangbao\/p\/7862278.html<\/a><\/p>\n

\u5b9e\u73b0\u4ee3\u7801\u4e00<\/p>\n

#shell\u5224\u65ad\u6587\u4ef6\u5939\u662f\u5426\u5b58\u5728<\/p>\n

#\u5982\u679c\u6587\u4ef6\u5939\u4e0d\u5b58\u5728\uff0c\u521b\u5efa\u6587\u4ef6\u5939
\nif [ ! -d \"\/Top\" ]; then
\n mkdir -p \/Topfi<\/p>\n

#shell\u5224\u65ad\u6587\u4ef6,\u76ee\u5f55\u662f\u5426\u5b58\u5728\u6216\u8005\u5177\u6709\u6743\u9650<\/p>\n

folder=\"\/Top\"
\nfile=\"\/Top\/test.txt\"<\/p>\n

# -x \u53c2\u6570\u5224\u65ad $folder \u662f\u5426\u5b58\u5728\u5e76\u4e14\u662f\u5426\u5177\u6709\u53ef\u6267\u884c\u6743\u9650
\nif [ ! -x \"$folder\"]; then
\n mkdir \"$folder\"
\nfi<\/p>\n

# -d \u53c2\u6570\u5224\u65ad $folder \u662f\u5426\u5b58\u5728
\nif [ ! -d \"$folder\"]; then
\n mkdir \"$folder\"
\nfi<\/p>\n

# -f \u53c2\u6570\u5224\u65ad $file \u662f\u5426\u5b58\u5728
\nif [ ! -f \"$file\" ]; then
\n touch \"$file\"
\nfi<\/p>\n

# -n \u5224\u65ad\u4e00\u4e2a\"\u53d8\u91cf\"\u662f\u5426\u6709\u503c
\nif [ ! -n \"$file\" ]; then
\n echo \"$file \u53d8\u91cf\u4e3a\u7a7a\uff01\"
\n exit 0
\nfi<\/p>\n

# \u5224\u65ad\u4e24\u4e2a\u53d8\u91cf\u7684\u5b57\u7b26\u4e32\u5185\u5bb9\u662f\u5426\u76f8\u540c
\nif [ \"$file1\" = \"$file2\" ]; then
\n echo \"$file1 equal $file2\"
\nelse
\n echo \"$file1 not equal $file2\"
\nfi<\/p>\n

\u5b9e\u73b0\u4ee3\u7801\u4e8c<\/p>\n

#!\/bin\/sh
\n# \u8bf4\u660e\uff1a\u5224\u65ad\u6587\u4ef6\u662f\u5426\u5b58\u5728<\/p>\n

myPath=\"\/Top\"
\nmyFile=\"\/Top\/access.log\"<\/p>\n

# \u8fd9\u91cc\u7684-x \u53c2\u6570\u5224\u65ad$myPath\u662f\u5426\u5b58\u5728\u5e76\u4e14\u662f\u5426\u5177\u6709\u53ef\u6267\u884c\u6743\u9650
\nif [ ! -x \"$myPath\"]; then
\n mkdir \"$myPath\"
\nfi
\n# \u8fd9\u91cc\u7684-d \u53c2\u6570\u5224\u65ad$myPath\u662f\u5426\u5b58\u5728
\nif [ ! -d \"$myPath\"]; then
\n mkdir \"$myPath\"
\nfi<\/p>\n

# \u8fd9\u91cc\u7684-f\u53c2\u6570\u5224\u65ad$myFile\u662f\u5426\u5b58\u5728
\nif [ ! -f \"$myFile\" ]; then
\n touch \"$myFile\"
\nfi<\/p>\n

# \u5176\u4ed6\u53c2\u6570\u8fd8\u6709-n,-n\u662f\u5224\u65ad\u4e00\u4e2a\u53d8\u91cf\u662f\u5426\u662f\u5426\u6709\u503c
\nif [ ! -n \"$myVar\" ]; then
\n echo \"$myVar \u53d8\u91cf\u4e3a\u7a7a\uff01\"
\n exit 0
\nfi<\/p>\n

# \u5224\u65ad$file\u5b57\u7b26\u4e32\u5185\u5bb9\u662f\u5426\u662f\u201c123123\u201d\u76f8\u540c
\nif [ \"$file1\" = \"123123\" ]; then
\n echo \"$file1 equal $file2\"
\nelse
\n echo \"$file1 not equal $file2\"
\nfi<\/p>","protected":false},"excerpt":{"rendered":"

\u8f6c\u81ea\uff1ahttps:\/\/www.cnblogs.com\/weijiangbao\/p\/7862278.html<\/a> \u5b9e […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t