{"id":6638,"date":"2022-02-26T18:34:15","date_gmt":"2022-02-26T13:04:15","guid":{"rendered":"https:\/\/pheonixsolutions.com\/blog\/?p=6638"},"modified":"2022-02-26T18:34:19","modified_gmt":"2022-02-26T13:04:19","slug":"invalid-header-var-log-rkhunter-log","status":"publish","type":"post","link":"https:\/\/pheonixsolutions.com\/blog\/invalid-header-var-log-rkhunter-log\/","title":{"rendered":"Invalid header: \/var\/log\/rkhunter.log"},"content":{"rendered":"\n<p>I got the above error when I am executing the bash script with mail command.<br><\/p>\n\n\n\n<p>In the scripts you use -a in the mail commands to attach the logfile. This does not function and results in an error that an invalid header is being added to the mail.<\/p>\n\n\n\n<p>Looking in the documentation for the mail command, -a is used for adding headers, while -A is used for attaching files.<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">  -a, --append=HEADER: VALUE append given header to the message being sent\n  -A, --attach=FILE          attach FILE<\/pre>\n\n\n\n<p>I was using &#8220;mail -s &#8220;REPORT &#8211; $HOSTNAME&#8221; -a $TMP_FILE abc@gmail.com and got the above error. Replaced -a with -A and executed the script. It has worked. <br><br>Also remember that it depends on the mail software which you are using. It likely depends on implementation, as these are different packages. If the script uses Heirloom-mailx, so\u00a0<strong>-a<\/strong>\u00a0is correct from that point of view. If you use some other software, just modify the script appropriately.<br><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I got the above error when I am executing the bash script with mail command. In the scripts you use -a in the mail commands to attach the logfile. This does not function and results in an error that an invalid header is being added to the mail. Looking in&hellip; <a href=\"https:\/\/pheonixsolutions.com\/blog\/invalid-header-var-log-rkhunter-log\/\" class=\"more-link read-more\" rel=\"bookmark\">Continue Reading <span class=\"screen-reader-text\">Invalid header: \/var\/log\/rkhunter.log<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[225,241,223,282],"tags":[939,938,937,936,935],"class_list":{"0":"post-6638","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-linux","7":"category-mail-servers","8":"category-shell-script","9":"category-ubuntu","10":"tag-invalid-header","11":"tag-invalid-header-while-executing-the-shell-script","12":"tag-mail-command-in-sell-script","13":"tag-mail-related","14":"tag-shell-script","15":"h-entry","17":"h-as-article"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pheonix Solutions - We Empower Your Business Growth<\/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:\/\/pheonixsolutions.com\/blog\/invalid-header-var-log-rkhunter-log\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pheonix Solutions - We Empower Your Business Growth\" \/>\n<meta property=\"og:description\" content=\"I got the above error when I am executing the bash script with mail command. 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