{"id":3737,"date":"2021-11-19T16:11:32","date_gmt":"2021-11-19T09:41:32","guid":{"rendered":"https:\/\/iatmm.com\/?p=3737"},"modified":"2021-12-16T18:31:17","modified_gmt":"2021-12-16T12:01:17","slug":"2-1-command-line-basics-variables-2","status":"publish","type":"post","link":"https:\/\/iat.edu.mm\/2-1-command-line-basics-variables-2\/","title":{"rendered":"2.1 Command Line Basics: Variables (2)"},"content":{"rendered":"\n

Working with Global Variables<\/span><\/strong><\/p>\n\n\n\n

            Shell \u1011\u1032\u1019\u103e\u102c \u1021\u101e\u1005\u103a\u1011\u1015\u103a\u1001\u1031\u102b\u103a\u101c\u102d\u102f\u1000\u103a\u1010\u1032\u1037 Subprocesses <\/span><\/em>\u1010\u103d\u1031\u1019\u103e\u102c\u1015\u102b Variable \u1000\u102d\u102f \u1006\u1000\u103a\u101c\u1000\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101c\u102d\u102f\u1015\u102b\u1000 Local \u1019\u103e Environment Variable \u1021\u1016\u103c\u1005\u103a export Command<\/span><\/em> \u101e\u102f\u1036\u1038\u1015\u103c\u102e\u1038 \u1015\u103c\u1031\u102c\u1004\u103a\u1038\u101c\u102d\u102f\u1037\u101b\u1015\u102b\u1010\u101a\u103a\u104b Variable Name \u1000\u102d\u102f Export \u101c\u102f\u1015\u103a\u101c\u102d\u102f\u1000\u103a\u1010\u102c\u1014\u103e\u1004\u1037\u103a Shell Environment \u1019\u103e\u102c \u1011\u100a\u1037\u103a\u101c\u102d\u102f\u1000\u103a\u1010\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

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Note: Export \u101c\u102f\u1015\u103a\u1010\u1032\u1037\u1021\u1001\u102b $ Sign \u1019\u101e\u102f\u1036\u1038\u1018\u1032 Variable Name \u1000\u102d\u102f\u1015\u1032 \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101b\u1015\u102b\u1019\u101a\u103a\u104b<\/code><\/em><\/p>\n\n\n\n

            Export \u101c\u102f\u1015\u103a\u1010\u1032\u1037\u1021\u1001\u102b \u1015\u102d\u102f\u1019\u102d\u102f\u101c\u103d\u101a\u103a\u1000\u1030\u1010\u1032\u1037\u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1000\u1010\u1031\u102c\u1037 Variable Value \u1000\u102d\u102f\u1015\u102b Argument \u1021\u1016\u103c\u1005\u103a \u1010\u1015\u102b\u1010\u100a\u103a\u1038 \u1011\u100a\u1037\u103a\u1015\u1031\u1038\u101c\u102d\u102f\u1000\u103a\u1010\u102c\u1015\u102b\u1015\u1032\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            Exported Variable \u1000\u102d\u102f Subprocesses \u1010\u103d\u1031\u1019\u103e\u102c\u1015\u102b \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101c\u102d\u102f\u1037\u101b\u1010\u102c\u1000\u102d\u102f \u1000\u103c\u100a\u1037\u103a\u1000\u103c\u1015\u102b\u1005\u102d\u102f\u1037\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            Environment Variables \u1010\u103d\u1031\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u1010\u1032\u1037 \u1014\u1031\u102c\u1000\u103a\u1010\u1005\u103a\u1014\u100a\u103a\u1038\u1000\u1010\u1031\u102c\u1037 Commands \u1010\u103d\u1031\u101b\u1032\u1037 \u101b\u103e\u1031\u1037\u1019\u103e\u102c\u1011\u102c\u1038\u1010\u102c\u1015\u102b\u1015\u1032\u104b Timezone \u1019\u103e\u1010\u103a\u1011\u102c\u1038\u1015\u1031\u1038\u1019\u101a\u1037\u103a TZ \u1006\u102d\u102f\u1010\u1032\u1037 Environment Variable \u101c\u1031\u1038\u101e\u102f\u1036\u1038\u1015\u103c\u102e\u1038 \u1005\u1019\u103a\u1038\u1000\u103c\u100a\u1037\u103a\u1015\u102b\u1019\u101a\u103a\u104b \u1012\u102e Variable \u101c\u1031\u1038\u1000\u102d\u102f \u1018\u101a\u103a Timezone \u101b\u1032\u1037 \u1021\u1001\u103b\u102d\u1014\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u1031\u1038\u101b\u1019\u101c\u1032\u1006\u102d\u102f\u1010\u102c\u101e\u102d\u1014\u102d\u102f\u1004\u103a\u1016\u102d\u102f\u1037 date Command<\/span><\/em> \u1019\u103e \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1019\u103e\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
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            Environment Variables \u1010\u103d\u1031\u1021\u102c\u1038\u101c\u102f\u1036\u1038\u1000\u102d\u102f env Command \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u103c\u102e\u1038 \u1000\u103c\u100a\u1037\u103a\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b<\/p>\n\n\n\n

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The PATH Variable<\/span><\/strong><\/p>\n\n\n\n

            PATH Variable \u101f\u102c Linux System \u1010\u1005\u103a\u1001\u102f\u1019\u103e\u102c \u1021\u1013\u102d\u1000\u1021\u1000\u103b\u1006\u102f\u1036\u1038\u101e\u1031\u102c Environment Variables \u1010\u103d\u1031\u1011\u1032\u1000 \u1010\u1005\u103a\u1001\u102f\u1015\u102b\u1015\u1032\u104b Linux Shell \u1019\u103e\u102c Commands \u1010\u103d\u1031 \u1021\u1016\u103c\u1005\u103a Run (or) Execute \u101c\u102f\u1015\u103a\u1001\u103d\u1004\u1037\u103a\u101b\u103e\u102d\u1010\u1032\u1037 \u1016\u102d\u102f\u1004\u103a\u1010\u103d\u1031\u1015\u102b\u101d\u1004\u103a\u1010\u1032\u1037 Path \u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u104a Directory Information<\/span><\/em> \u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1000\u102d\u102f Colon ( : )<\/span><\/em> \u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1001\u103c\u102c\u1038\u1015\u103c\u102e\u1038 Directories List \u1021\u1016\u103c\u1005\u103a \u101e\u102d\u1019\u103a\u1038\u1011\u102c\u1038\u1015\u1031\u1038\u1010\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            Directory \u1021\u101e\u1005\u103a\u1010\u1005\u103a\u1001\u102f \u1011\u1015\u103a\u1010\u102d\u102f\u1038\u101c\u102d\u102f\u101c\u103b\u1004\u103a Colon Sign ( : ) \u101c\u1031\u1038\u1011\u100a\u1037\u103a\u1015\u103c\u102e\u1038 \u1010\u102d\u102f\u1038\u101c\u102d\u102f\u1000\u103a\u101b\u102f\u1036\u1015\u102b\u1015\u1032\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            \u1025\u1015\u1019\u102c\u101c\u1031\u1038\u1010\u1005\u103a\u1001\u102f\u1000\u103c\u100a\u1037\u103a\u1015\u102b\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            \u1012\u102e\u1025\u1015\u1019\u102c\u1019\u103e\u102c PATH Variable \u1011\u1032\u1000\u102d\u102f \u1011\u1015\u103a\u1011\u100a\u1037\u103a\u101c\u102d\u102f\u1000\u103a\u1010\u1032\u1037 Directory \u1021\u101e\u1005\u103a\u101c\u1031\u1038\u1010\u1005\u103a\u1001\u102f \u1011\u1015\u103a\u1010\u102d\u102f\u1038\u101c\u102c\u1010\u102c\u1000\u102d\u102f \u1010\u103d\u1031\u1037\u101b\u1019\u103e\u102c\u1015\u102b\u104b PATH Variable \u1011\u1032\u1019\u103e\u102c \u101b\u103e\u102d\u1014\u103e\u1004\u1037\u103a\u1014\u1031\u1015\u103c\u102e\u1038\u1010\u1032\u1037 Directory List \u1019\u1015\u103b\u1031\u102c\u1000\u103a\u101e\u103d\u102c\u1038\u1018\u1032 \u1000\u103b\u1014\u103a\u1014\u1031\u1005\u1031\u1016\u102d\u102f\u1037 Colon Sign ( : ) \u101e\u102f\u1036\u1038\u1015\u103c\u102e\u1038 \u1011\u1015\u103a\u1010\u102d\u102f\u1038\u1016\u102d\u102f\u1037\u1010\u1031\u102c\u1037 \u101e\u1010\u102d\u1011\u102c\u1038\u1016\u102d\u102f\u1037\u101c\u102d\u102f\u1015\u102b\u1010\u101a\u103a\u104b Variables \u1010\u103d\u1031\u101e\u102f\u1036\u1038\u1015\u103c\u102e\u1038\u1010\u1031\u102c\u1037\u101c\u100a\u103a\u1038 \u1011\u1015\u103a\u1010\u102d\u102f\u1038\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            PATH Variable \u101f\u102c Command Line \u1019\u103e\u102c Commands \u1010\u103d\u1031\u1021\u101c\u102f\u1015\u103a\u101c\u102f\u1015\u103a\u1014\u102d\u102f\u1004\u103a\u1016\u102d\u102f\u1037 \u1021\u1013\u102d\u1000\u1000\u103b\u1010\u102c\u1019\u102d\u102f\u1037 \u101e\u1010\u102d\u1015\u103c\u102f\u1000\u102d\u102f\u1004\u103a\u1010\u103d\u101a\u103a\u1016\u102d\u102f\u1037\u1010\u1031\u102c\u1037 \u101c\u102d\u102f\u1021\u1015\u103a\u1015\u102b\u1010\u101a\u103a\u104b \u1014\u1031\u102c\u1000\u103a\u1011\u1015\u103a \u1025\u1015\u1019\u102c\u101c\u1031\u1038 \u1000\u103c\u100a\u1037\u103a\u1000\u103c\u1015\u102b\u1005\u102d\u102f\u1037\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            Shell \u101f\u102c Command \u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1018\u101a\u103a\u1014\u1031\u101b\u102c\u1019\u103e \u1001\u1031\u102b\u103a\u101e\u102f\u1036\u1038\u101c\u1032\u1006\u102d\u102f\u1010\u102c \u1021\u1016\u103c\u1031\u101b\u103e\u102c\u1016\u102d\u102f\u1037 which Command<\/em> <\/span>\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b Command Name \u1000\u102d\u102f Argument \u1021\u1016\u103c\u1005\u103a\u1011\u100a\u1037\u103a\u1015\u1031\u1038\u101c\u102d\u102f\u1000\u103a\u1019\u103e\u102c\u1015\u102b\u104b \u1025\u1015\u1019\u102c nano Command<\/span><\/em> \u101c\u1031\u1038 \u1018\u101a\u103a\u1014\u1031\u101b\u102c\u1019\u103e\u102c \u101e\u102d\u1019\u103a\u1038\u1011\u102c\u1038\u101c\u1032\u1006\u102d\u102f\u1010\u102c \u101b\u103e\u102c\u1000\u103c\u100a\u1037\u103a\u1000\u103c\u1015\u102b\u1005\u102d\u102f\u1037\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            nano Command (\u101e\u102d\u102f\u1037) Run \u1014\u102d\u102f\u1004\u103a\u1010\u1032\u1037 Executable Nano File \u101c\u1031\u1038\u101f\u102c \/usr\/bin Directory \u1011\u1032\u1019\u103e\u102c \u101b\u103e\u102d\u1014\u1031\u1010\u102c\u1000\u102d\u102f \u1010\u103d\u1031\u1037\u101b\u1019\u103e\u102c\u1015\u102b\u104b \u1021\u1032\u1037\u1012\u102e Directory Path \u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u101c\u1031\u1038\u1000\u102d\u102f PATH Variable \u1011\u1032\u1019\u103e \u1016\u101a\u103a\u101b\u103e\u102c\u1038\u1015\u103c\u102e\u1038 nano Command \u101c\u1031\u1038 \u1021\u101c\u102f\u1015\u103a\u101c\u102f\u1015\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u1038\u101c\u102c\u1038\u1006\u102d\u102f\u1010\u102c \u1005\u1005\u103a\u1000\u103c\u100a\u1037\u103a\u1000\u103c\u1015\u102b\u1005\u102d\u102f\u1037\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            nano Command \u101c\u1031\u1038 \u1001\u1031\u102b\u103a\u1000\u103c\u100a\u1037\u103a\u1015\u102b\u1019\u101a\u103a\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

            Command \u1000\u102d\u102f \u101b\u103e\u102c\u1019\u1010\u103d\u1031\u1037\u1010\u1031\u102c\u1037\u1018\u1032 Run (or) Execute \u1019\u101c\u102f\u1015\u103a\u1014\u102d\u102f\u1004\u103a\u1010\u1031\u102c\u1037\u1010\u102c\u1000\u102d\u102f \u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b Command \u1010\u103d\u1031\u101b\u103e\u102d\u1010\u1010\u103a\u1010\u1032\u1037 \u1019\u100a\u103a\u101e\u100a\u1037\u103a\u1014\u1031\u101b\u102c\u1019\u103e\u102c\u1019\u103e \u101b\u103e\u102c\u1019\u1010\u103d\u1031\u1037\u1010\u102c\u1019\u102d\u102f\u1037 nano \u1006\u102d\u102f\u1010\u102c \u1019\u101b\u103e\u102d\u1015\u102b\u1018\u1030\u1038 nano \u1006\u102d\u102f\u1010\u1032\u1037 \u1016\u102d\u102f\u1004\u103a\u1019\u1010\u103d\u1031\u1037\u1015\u102b\u1018\u1030\u1038\u101c\u102d\u102f\u1037 Error Message<\/span><\/em> \u1015\u103c\u1010\u102c\u1000\u102d\u102f \u1010\u103d\u1031\u1037\u101b\u1019\u103e\u102c\u1015\u102b\u104b<\/p>\n\n\n\n

            \u1016\u101a\u103a\u101b\u103e\u102c\u1038\u1001\u1032\u1037\u1010\u1032\u1037 Directory \u1015\u103c\u1014\u103a\u1011\u100a\u1037\u103a\u1015\u103c\u102e\u1038 \u1015\u103c\u1014\u103a\u1001\u1031\u102b\u103a\u1000\u103c\u100a\u1037\u103a\u1010\u1032\u1037\u1021\u1001\u102b nano Command \u101c\u1031\u1038 \u1021\u101c\u102f\u1015\u103a\u1015\u103c\u1014\u103a\u101c\u102f\u1015\u103a\u1014\u102d\u102f\u1004\u103a\u1010\u102c\u1000\u102d\u102f \u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u1010\u101a\u103a\u104b<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

TIP: PATH Variable \u1011\u1032\u1019\u103e\u102c\u1015\u102b\u1010\u1032\u1037 Directory Path \u101c\u1019\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1010\u103d\u1031\u1019\u103e\u102c \u1016\u1031\u102c\u103a\u1015\u103c\u1011\u102c\u1038\u1010\u1032\u1037 Elements Order \u1021\u1005\u102e\u1021\u1005\u1025\u103a\u1021\u1010\u102d\u102f\u1004\u103a\u1038\u1015\u1032 \u1026\u1038\u1005\u102c\u1038\u1015\u1031\u1038\u1015\u103c\u102e\u1038 Command \u1010\u103d\u1031\u1000\u102d\u102f \u101b\u103e\u102c\u101e\u103d\u102c\u1038\u1015\u102b\u1010\u101a\u103a\u104b<\/code><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Working with Global Variables             Shell \u1011\u1032\u1019\u103e\u102c \u1021\u101e\u1005\u103a\u1011\u1015\u103a\u1001\u1031\u102b\u103a\u101c\u102d\u102f\u1000\u103a\u1010\u1032\u1037 Subprocesses \u1010\u103d\u1031\u1019\u103e\u102c\u1015\u102b Variable \u1000\u102d\u102f \u1006\u1000\u103a\u101c\u1000\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101c\u102d\u102f\u1015\u102b\u1000 Local \u1019\u103e Environment Variable \u1021\u1016\u103c\u1005\u103a export Command […]<\/p>\n","protected":false},"author":1,"featured_media":4027,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64,18,65],"tags":[],"class_list":["post-3737","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-iat-courses","category-knowledge-sharing","category-linux"],"_links":{"self":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts\/3737","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/comments?post=3737"}],"version-history":[{"count":4,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts\/3737\/revisions"}],"predecessor-version":[{"id":4028,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/posts\/3737\/revisions\/4028"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/media\/4027"}],"wp:attachment":[{"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/media?parent=3737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/categories?post=3737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iat.edu.mm\/api\/wp\/v2\/tags?post=3737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}