{"id":1476,"date":"2025-01-12T09:49:00","date_gmt":"2025-01-12T00:49:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=1476"},"modified":"2026-06-01T21:09:28","modified_gmt":"2026-06-01T12:09:28","slug":"linux%e5%9f%ba%e7%a4%8e-l5%ef%bc%9a%e3%83%91%e3%82%a4%e3%83%97%e3%83%bb%e3%83%aa%e3%83%80%e3%82%a4%e3%83%ac%e3%82%af%e3%83%88%e3%83%bb%e6%a4%9c%e7%b4%a2","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=1476","title":{"rendered":"5\uff1a\u30d1\u30a4\u30d7\u30fb\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u30fb\u691c\u7d22"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u307e\u3067\u306f\u300c\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u308b\u300d\u300c\u6a29\u9650\u3092\u5909\u3048\u308b\u300d\u306a\u3069\u3001\u30b3\u30de\u30f3\u30c9\u30921\u3064\u305a\u3064\u5358\u72ec\u3067\u4f7f\u3063\u3066\u304d\u307e\u3057\u305f\u3002Linux\u306e\u672c\u5f53\u306e\u5f37\u3055\u306f\u3001<strong>\u30b3\u30de\u30f3\u30c9\u540c\u58eb\u3092\u3064\u306a\u3050<\/strong>\u3053\u3068\u3067\u767a\u63ee\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3042\u308b\u30b3\u30de\u30f3\u30c9\u306e\u7d50\u679c\u3092\u5225\u306e\u30b3\u30de\u30f3\u30c9\u3078\u6e21\u3057\u305f\u308a\u3001\u753b\u9762\u306b\u51fa\u308b\u7d50\u679c\u3092\u30d5\u30a1\u30a4\u30eb\u3078\u4fdd\u5b58\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3067\u3001\u5c0f\u3055\u306a\u30b3\u30de\u30f3\u30c9\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u5f37\u529b\u306a\u51e6\u7406\u3092\u4f5c\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u56de\u3067\u306f\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\uff08<code>&gt;<\/code>\u3001<code>&gt;&gt;<\/code>\uff09\u3001\u30d1\u30a4\u30d7\uff08<code>|<\/code>\uff09\u3001\u6587\u5b57\u5217\u691c\u7d22\u3092\u884c\u3046 <code>grep<\/code>\u3001\u30d5\u30a1\u30a4\u30eb\u691c\u7d22\u3092\u884c\u3046 <code>find<\/code>\u3001\u4ef6\u6570\u3092\u6570\u3048\u308b <code>wc<\/code> \u3092\u5b66\u3073\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u30ea\u30c0\u30a4\u30ec\u30af\u30c8\uff1a\u51fa\u529b\u5148\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u5207\u308a\u66ff\u3048\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u884c\u7d50\u679c\u306f\u901a\u5e38\u3001\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u51fa\u529b\u5148\u3092\u30d5\u30a1\u30a4\u30eb\u3078\u5909\u66f4\u3059\u308b\u4ed5\u7d44\u307f\u304c<strong>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&gt;\uff1a\u30d5\u30a1\u30a4\u30eb\u3078\u4e0a\u66f8\u304d\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>&gt;<\/code> \u306f\u51fa\u529b\u7d50\u679c\u3092\u30d5\u30a1\u30a4\u30eb\u3078\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3059\u3067\u306b\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306f\u3001\u4e2d\u8eab\u3092\u6d88\u3057\u3066\u4e0a\u66f8\u304d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ echo \"1\u884c\u76ee\u3067\u3059\" &gt; log.txt\n$ cat log.txt\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u884c\u76ee\u3067\u3059\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u5ea6 <code>&gt;<\/code> \u3092\u4f7f\u3046\u3068\u4e0a\u66f8\u304d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ echo \"\u3042\u3068\u304b\u3089\u66f8\u3044\u305f\u884c\" &gt; log.txt\n$ cat log.txt\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u3042\u3068\u304b\u3089\u66f8\u3044\u305f\u884c\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u521d\u306e\u5185\u5bb9\u306f\u6d88\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&gt;&gt;\uff1a\u30d5\u30a1\u30a4\u30eb\u3078\u8ffd\u8a18\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>&gt;&gt;<\/code> \u306f\u65e2\u5b58\u5185\u5bb9\u3092\u6b8b\u3057\u305f\u307e\u307e\u672b\u5c3e\u3078\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ echo \"1\u884c\u76ee\u3067\u3059\" &gt; log.txt\n$ echo \"2\u884c\u76ee\u3092\u8ffd\u8a18\" &gt;&gt; log.txt\n$ echo \"3\u884c\u76ee\u3082\u8ffd\u8a18\" &gt;&gt; log.txt\n$ cat log.txt\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\u884c\u76ee\u3067\u3059\n2\u884c\u76ee\u3092\u8ffd\u8a18\n3\u884c\u76ee\u3082\u8ffd\u8a18\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u8a18\u53f7<\/th><th>\u52d5\u4f5c<\/th><th>\u65e2\u5b58\u30c7\u30fc\u30bf<\/th><\/tr><\/thead><tbody><tr><td><code>&gt;<\/code><\/td><td>\u4e0a\u66f8\u304d<\/td><td>\u6d88\u3048\u308b<\/td><\/tr><tr><td><code>&gt;&gt;<\/code><\/td><td>\u8ffd\u8a18<\/td><td>\u6b8b\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u6ce8\u610f\uff1a<\/strong><code>&gt;<\/code> \u306f\u78ba\u8a8d\u306a\u3057\u3067\u4e0a\u66f8\u304d\u3057\u307e\u3059\u3002\u8ffd\u8a18\u3057\u305f\u3044\u5834\u5408\u306f\u5fc5\u305a <code>&gt;&gt;<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u30d1\u30a4\u30d7 |\uff1a\u30b3\u30de\u30f3\u30c9\u3092\u3064\u306a\u3050<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30a4\u30d7\uff08<code>|<\/code>\uff09\u306f\u3001\u5de6\u5074\u30b3\u30de\u30f3\u30c9\u306e\u51fa\u529b\u3092\u53f3\u5074\u30b3\u30de\u30f3\u30c9\u306e\u5165\u529b\u3068\u3057\u3066\u6e21\u3059\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5de6\u306e\u30b3\u30de\u30f3\u30c9 | \u53f3\u306e\u30b3\u30de\u30f3\u30c9\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001<code>ls -l<\/code> \u306e\u7d50\u679c\u3092 <code>less<\/code> \u306b\u6e21\u3057\u3066\u8aad\u307f\u3084\u3059\u304f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ ls -l | less\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><code>ls -l<\/code> \u306e\u7d50\u679c\u304c <code>less<\/code> \u306b\u6e21\u3055\u308c\u3001\u30da\u30fc\u30b8\u5358\u4f4d\u3067\u95b2\u89a7\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30a4\u30d7\u306f\u8907\u6570\u9023\u7d50\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"562\" src=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_20-1024x562.png\" alt=\"\" class=\"wp-image-1508\" srcset=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_20-1024x562.png 1024w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_20-300x165.png 300w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_20-768x421.png 768w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_20-1536x843.png 1536w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_20.png 1693w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. grep\uff1a\u6587\u5b57\u5217\u691c\u7d22<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>grep<\/code> \u306f\u6307\u5b9a\u3057\u305f\u6587\u5b57\u5217\u3092\u542b\u3080\u884c\u3060\u3051\u3092\u62bd\u51fa\u3059\u308b\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3068\u3057\u3066\u6b21\u306e\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2026-05-29 10:00:01 INFO  GET \/index.html 200\n2026-05-29 10:00:05 INFO  GET \/about.html 200\n2026-05-29 10:01:12 ERROR GET \/missing.html 404\n2026-05-29 10:02:30 INFO  POST \/login 200\n2026-05-29 10:03:44 error GET \/old.html 404\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u691c\u7d22<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep \"ERROR\" access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2026-05-29 10:01:12 ERROR GET \/missing.html 404\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">-i\uff1a\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u3092\u7121\u8996\u3059\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep -i \"error\" access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2026-05-29 10:01:12 ERROR GET \/missing.html 404\n2026-05-29 10:03:44 error GET \/old.html 404\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">-n\uff1a\u884c\u756a\u53f7\u3092\u8868\u793a\u3059\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep -n \"INFO\" access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1:2026-05-29 10:00:01 INFO  GET \/index.html 200\n2:2026-05-29 10:00:05 INFO  GET \/about.html 200\n4:2026-05-29 10:02:30 INFO  POST \/login 200\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">-r\uff1a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5168\u4f53\u3092\u691c\u7d22\u3059\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep -rn \"TODO\" .\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.\/notes\/memo.txt:3:TODO \u8a2d\u5b9a\u3092\u898b\u76f4\u3059\n.\/src\/main.txt:10:TODO \u30a8\u30e9\u30fc\u51e6\u7406\u3092\u8ffd\u52a0\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30aa\u30d7\u30b7\u30e7\u30f3<\/th><th>\u610f\u5473<\/th><\/tr><\/thead><tbody><tr><td><code>-i<\/code><\/td><td>\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u3092\u533a\u5225\u3057\u306a\u3044<\/td><\/tr><tr><td><code>-n<\/code><\/td><td>\u884c\u756a\u53f7\u8868\u793a<\/td><\/tr><tr><td><code>-r<\/code><\/td><td>\u518d\u5e30\u691c\u7d22<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_37-1024x512.png\" alt=\"\" class=\"wp-image-1509\" srcset=\"https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_37-1024x512.png 1024w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_37-300x150.png 300w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_37-768x384.png 768w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_37-1536x768.png 1536w, https:\/\/ccna-curriculum.tech-village.co.jp\/wp-content\/uploads\/2026\/01\/ChatGPT-Image-2026\u5e745\u670831\u65e5-10_22_37.png 1774w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. find\uff1a\u30d5\u30a1\u30a4\u30eb\u3092\u63a2\u3059<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>find<\/code> \u306f\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u691c\u7d22\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">-name\uff1a\u540d\u524d\u3067\u691c\u7d22\u3059\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ find . -name \"*.txt\"\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.\/memo.txt\n.\/notes\/todo.txt\n.\/notes\/archive\/old.txt\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">-type f\uff1a\u30d5\u30a1\u30a4\u30eb\u3060\u3051\u306b\u9650\u5b9a\u3059\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ find . -type f -name \"*.txt\"\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.\/memo.txt\n.\/notes\/todo.txt\n.\/notes\/archive\/old.txt\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6761\u4ef6<\/th><th>\u610f\u5473<\/th><\/tr><\/thead><tbody><tr><td><code>-name \"*.txt\"<\/code><\/td><td>.txt\u30d5\u30a1\u30a4\u30eb\u3092\u691c\u7d22<\/td><\/tr><tr><td><code>-type f<\/code><\/td><td>\u30d5\u30a1\u30a4\u30eb\u306e\u307f\u5bfe\u8c61<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. wc\uff1a\u4ef6\u6570\u3084\u884c\u6570\u3092\u6570\u3048\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>wc<\/code> \u306f\u884c\u6570\u3084\u5358\u8a9e\u6570\u3092\u6570\u3048\u308b\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">-l\uff1a\u884c\u6570\u3092\u6570\u3048\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ wc -l access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>5 access.log\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">grep \u3068\u7d44\u307f\u5408\u308f\u305b\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">ERROR\u884c\u306e\u4ef6\u6570\u3092\u6570\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep \"ERROR\" access.log | wc -l\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">grep -c\uff1a\u4ef6\u6570\u3060\u3051\u3092\u8868\u793a\u3059\u308b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep -c \"ERROR\" access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b3\u30de\u30f3\u30c9<\/th><th>\u7d50\u679c<\/th><\/tr><\/thead><tbody><tr><td><code>grep \"ERROR\" access.log<\/code><\/td><td>\u8a72\u5f53\u884c\u3092\u8868\u793a<\/td><\/tr><tr><td><code>grep \"ERROR\" access.log | wc -l<\/code><\/td><td>\u4ef6\u6570\u3092\u8868\u793a<\/td><\/tr><tr><td><code>grep -c \"ERROR\" access.log<\/code><\/td><td>\u4ef6\u6570\u3092\u8868\u793a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6f14\u7fd2<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ab2\u984c\uff1aERROR\u30ed\u30b0\u3092\u691c\u7d22\u3057\u3066\u4ef6\u6570\u3092\u6570\u3048\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ cd ~\n$ echo \"2026-05-29 10:00:01 INFO  GET \/index.html 200\" &gt; access.log\n$ echo \"2026-05-29 10:00:05 INFO  GET \/about.html 200\" &gt;&gt; access.log\n$ echo \"2026-05-29 10:01:12 ERROR GET \/missing.html 404\" &gt;&gt; access.log\n$ echo \"2026-05-29 10:02:30 INFO  POST \/login 200\" &gt;&gt; access.log\n$ echo \"2026-05-29 10:03:44 ERROR GET \/old.html 500\" &gt;&gt; access.log\n$ echo \"2026-05-29 10:04:10 ERROR POST \/pay 500\" &gt;&gt; access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ cat access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u884c\u6570\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ wc -l access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>6 access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">ERROR\u884c\u3060\u3051\u62bd\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep \"ERROR\" access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2026-05-29 10:01:12 ERROR GET \/missing.html 404\n2026-05-29 10:03:44 ERROR GET \/old.html 500\n2026-05-29 10:04:10 ERROR POST \/pay 500\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ef6\u6570\u3092\u6570\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep \"ERROR\" access.log | wc -l\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>3\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>$ grep -c \"ERROR\" access.log\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u3055\u308c\u308b\u51fa\u529b\uff08\u4f8b\uff09\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>3\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2\u306e\u78ba\u8a8d\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2610 <code>&gt;<\/code> \u3068 <code>&gt;&gt;<\/code> \u3092\u4f7f\u3044\u5206\u3051\u3089\u308c\u308b<\/li>\n\n\n\n<li>\u2610 <code>|<\/code> \u3067\u30b3\u30de\u30f3\u30c9\u3092\u9023\u7d50\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u2610 <code>grep<\/code> \u3067\u76ee\u7684\u306e\u884c\u3092\u691c\u7d22\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u2610 <code>wc -l<\/code> \u3068 <code>grep -c<\/code> \u3067\u4ef6\u6570\u3092\u78ba\u8a8d\u3067\u304d\u308b<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b \u3053\u3053\u307e\u3067\u306f\u300c\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u308b\u300d\u300c\u6a29\u9650\u3092\u5909\u3048\u308b\u300d\u306a\u3069\u3001\u30b3\u30de\u30f3\u30c9\u30921\u3064\u305a\u3064\u5358\u72ec\u3067\u4f7f\u3063\u3066\u304d\u307e\u3057\u305f\u3002Linux\u306e\u672c\u5f53\u306e\u5f37\u3055\u306f\u3001\u30b3\u30de\u30f3\u30c9\u540c\u58eb\u3092\u3064\u306a\u3050\u3053\u3068\u3067\u767a\u63ee\u3055\u308c\u307e\u3059\u3002 \u3042\u308b\u30b3\u30de\u30f3\u30c9\u306e\u7d50\u679c\u3092\u5225\u306e\u30b3\u30de\u30f3\u30c9\u3078\u6e21\u3057\u305f\u308a\u3001\u753b\u9762\u306b\u51fa [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-1476","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/1476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1476"}],"version-history":[{"count":3,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/1476\/revisions"}],"predecessor-version":[{"id":1510,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=\/wp\/v2\/posts\/1476\/revisions\/1510"}],"wp:attachment":[{"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ccna-curriculum.tech-village.co.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}