{"id":293,"date":"2022-01-11T15:50:34","date_gmt":"2022-01-11T15:50:34","guid":{"rendered":"https:\/\/www.jibsheet.net\/linux\/?p=293"},"modified":"2022-01-11T15:50:34","modified_gmt":"2022-01-11T15:50:34","slug":"bash-array-operations-short-table","status":"publish","type":"post","link":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/","title":{"rendered":"Bash array operations – short table."},"content":{"rendered":"

arr=() Create an empty array
\narr=(1 2 3) Initialize array
\n${arr[2]} Retrieve third element
\n${arr[@]} Retrieve all elements
\n${!arr[@]} Retrieve array indices
\n${#arr[@]} Calculate array size
\narr[0]=3 Overwrite 1st element
\narr+=(4) Append value(s)
\nstr=$(ls) Save ls output as a string
\narr=( $(ls) ) Save ls output as an array of files
\n${arr[@]:s:n} Retrieve n elements starting at index s<\/p>\n","protected":false},"excerpt":{"rendered":"

arr=() Create an empty array arr=(1 2 3) Initialize array ${arr[2]} Retrieve third element ${arr[@]} Retrieve all elements ${!arr[@]} Retrieve array indices ${#arr[@]} Calculate array size arr[0]=3 Overwrite 1st element arr+=(4) Append value(s) str=$(ls) Save ls output as a string arr=( $(ls) ) Save ls output as an array of files ${arr[@]:s:n} Retrieve n elements starting at index s<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[22,5,1],"tags":[],"yoast_head":"\nBash array operations - short table. - Jon Allen's Linux Stuff<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bash array operations - short table. - Jon Allen's Linux Stuff\" \/>\n<meta property=\"og:description\" content=\"arr=() Create an empty array arr=(1 2 3) Initialize array ${arr[2]} Retrieve third element ${arr[@]} Retrieve all elements ${!arr[@]} Retrieve array indices ${#arr[@]} Calculate array size arr[0]=3 Overwrite 1st element arr+=(4) Append value(s) str=$(ls) Save ls output as a string arr=( $(ls) ) Save ls output as an array of files ${arr[@]:s:n} Retrieve n elements starting at index s\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\" \/>\n<meta property=\"og:site_name\" content=\"Jon Allen's Linux Stuff\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-11T15:50:34+00:00\" \/>\n<meta name=\"author\" content=\"jonallen\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"jonallen\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\"},\"author\":{\"name\":\"jonallen\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993\"},\"headline\":\"Bash array operations – short table.\",\"datePublished\":\"2022-01-11T15:50:34+00:00\",\"dateModified\":\"2022-01-11T15:50:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\"},\"wordCount\":66,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993\"},\"articleSection\":[\"bash\",\"Linux\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\",\"url\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\",\"name\":\"Bash array operations - short table. - Jon Allen's Linux Stuff\",\"isPartOf\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#website\"},\"datePublished\":\"2022-01-11T15:50:34+00:00\",\"dateModified\":\"2022-01-11T15:50:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.jibsheet.net\/linux\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Bash array operations – short table.\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#website\",\"url\":\"https:\/\/www.jibsheet.net\/linux\/\",\"name\":\"Jon Allen's Linux Stuff\",\"description\":\"Howto's, Observations, and stuff\",\"publisher\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.jibsheet.net\/linux\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993\",\"name\":\"jonallen\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/7d7c061ce9db8f5e4710555585475882?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/7d7c061ce9db8f5e4710555585475882?s=96&d=mm&r=g\",\"caption\":\"jonallen\"},\"logo\":{\"@id\":\"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/image\/\"},\"sameAs\":[\"https:\/\/www.jibsheet.net\/linux\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Bash array operations - short table. - Jon Allen's Linux Stuff","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/","og_locale":"en_US","og_type":"article","og_title":"Bash array operations - short table. - Jon Allen's Linux Stuff","og_description":"arr=() Create an empty array arr=(1 2 3) Initialize array ${arr[2]} Retrieve third element ${arr[@]} Retrieve all elements ${!arr[@]} Retrieve array indices ${#arr[@]} Calculate array size arr[0]=3 Overwrite 1st element arr+=(4) Append value(s) str=$(ls) Save ls output as a string arr=( $(ls) ) Save ls output as an array of files ${arr[@]:s:n} Retrieve n elements starting at index s","og_url":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/","og_site_name":"Jon Allen's Linux Stuff","article_published_time":"2022-01-11T15:50:34+00:00","author":"jonallen","twitter_card":"summary_large_image","twitter_misc":{"Written by":"jonallen","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#article","isPartOf":{"@id":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/"},"author":{"name":"jonallen","@id":"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993"},"headline":"Bash array operations – short table.","datePublished":"2022-01-11T15:50:34+00:00","dateModified":"2022-01-11T15:50:34+00:00","mainEntityOfPage":{"@id":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/"},"wordCount":66,"commentCount":0,"publisher":{"@id":"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993"},"articleSection":["bash","Linux"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/","url":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/","name":"Bash array operations - short table. - Jon Allen's Linux Stuff","isPartOf":{"@id":"https:\/\/www.jibsheet.net\/linux\/#website"},"datePublished":"2022-01-11T15:50:34+00:00","dateModified":"2022-01-11T15:50:34+00:00","breadcrumb":{"@id":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.jibsheet.net\/linux\/index.php\/2022\/01\/11\/bash-array-operations-short-table\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.jibsheet.net\/linux\/"},{"@type":"ListItem","position":2,"name":"Bash array operations – short table."}]},{"@type":"WebSite","@id":"https:\/\/www.jibsheet.net\/linux\/#website","url":"https:\/\/www.jibsheet.net\/linux\/","name":"Jon Allen's Linux Stuff","description":"Howto's, Observations, and stuff","publisher":{"@id":"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.jibsheet.net\/linux\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/295a80d0b2aa929b648c4fdddee83993","name":"jonallen","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/7d7c061ce9db8f5e4710555585475882?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7d7c061ce9db8f5e4710555585475882?s=96&d=mm&r=g","caption":"jonallen"},"logo":{"@id":"https:\/\/www.jibsheet.net\/linux\/#\/schema\/person\/image\/"},"sameAs":["https:\/\/www.jibsheet.net\/linux"]}]}},"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/posts\/293"}],"collection":[{"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/comments?post=293"}],"version-history":[{"count":1,"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/posts\/293\/revisions"}],"predecessor-version":[{"id":294,"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/posts\/293\/revisions\/294"}],"wp:attachment":[{"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/media?parent=293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/categories?post=293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jibsheet.net\/linux\/index.php\/wp-json\/wp\/v2\/tags?post=293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}