{"id":13221,"date":"2019-04-01T08:18:56","date_gmt":"2019-04-01T08:18:56","guid":{"rendered":"http:\/\/www.appservgrid.com\/paw92\/?p=13221"},"modified":"2019-04-01T08:18:56","modified_gmt":"2019-04-01T08:18:56","slug":"set-date-and-time-for-each-command-you-execute-in-bash-history","status":"publish","type":"post","link":"https:\/\/www.appservgrid.com\/paw92\/index.php\/2019\/04\/01\/set-date-and-time-for-each-command-you-execute-in-bash-history\/","title":{"rendered":"Set Date and Time for Each Command You Execute in Bash History"},"content":{"rendered":"

By default, all commands executed by\u00a0Bash<\/strong>\u00a0on the command line are stored in history buffer or recorded in a file called\u00a0~\/.bash_history<\/strong>. This means that a system administrator can view a list of commands executed by users on the system or a user can view his\/her command history using the\u00a0history command<\/a>\u00a0like so.<\/p>\n

$ history\r\n<\/pre>\n
\n
\"Linux<\/a><\/p>\n
Linux History Command<\/p>\n<\/div>\n
From the output of the\u00a0history command<\/a>\u00a0above, the\u00a0date<\/strong>\u00a0and\u00a0time<\/strong>\u00a0when a command was executed is not shown. This is the default setting on most if not all Linux distributions.<\/p>\n
In this article, we will explain how you can configure time stamp information when each command in the Bash history was executed to be displayed.<\/p>\n
The\u00a0date<\/strong>\u00a0and\u00a0time<\/strong>\u00a0associated with each history entry can be written to the history file, marked with the history comment character by setting the\u00a0HISTTIMEFORMAT<\/strong>\u00a0variable.<\/p>\n
There are two possible ways of doing this: one does it temporarily while the other makes it permanent.<\/p>\n
To set\u00a0HISTTIMEFORMAT<\/strong>\u00a0variable temporarily, export it as below on the command line:<\/p>\n
$ export HISTTIMEFORMAT='%F %T'\r\n<\/pre>\n
In the export command above, the time stamp format:<\/p>\n
    \n
  1. %F<\/code>\u00a0\u2013 expands to full date same, as\u00a0%Y-%m-%d<\/strong>\u00a0(year-month-date).<\/li>\n
  2. %T<\/code>\u00a0\u2013 expands to time; same as\u00a0%H:%M:%S<\/strong>\u00a0(hour:minute:seconds).<\/li>\n<\/ol>\n
    Read through the\u00a0date command<\/a>\u00a0man page for additional usage information:<\/p>\n
    $ man date\r\n<\/pre>\n
    Then check your command history as follows:<\/p>\n
    $ history \r\n<\/pre>\n
    \n
    \"Display<\/a><\/p>\n
    Display Linux Command History with Date and Time<\/p>\n<\/div>\n
    However, if you want to configure this variable permanently, open the file\u00a0~\/.bashrc<\/code>\u00a0with your favorite editor:<\/p>\n
    $ vi ~\/.bashrc\r\n<\/pre>\n
    And add the line below in it (you mark it with a comment as your own configuration):<\/p>\n
    #my config\r\nexport HISTTIMEFORMAT='%F %T'\r\n<\/pre>\n
    Save the file and exit, afterwards, run the command below to effect the changes made to the file:<\/p>\n
    $ source ~\/.bashrc\r\n<\/pre>\n
    That\u2019s all! Do share with us any interesting history command tips and tricks or your thoughts about this guide via the comment section below.<\/p>\n
    Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
    By default, all commands executed by\u00a0Bash\u00a0on the command line are stored in history buffer or recorded in a file called\u00a0~\/.bash_history. This means that a system administrator can view a list of commands executed by users on the system or a user can view his\/her command history using the\u00a0history command\u00a0like so. $ history Linux History Command … <\/p>\n
    Continue reading “Set Date and Time for Each Command You Execute in Bash History”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13221","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts\/13221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/comments?post=13221"}],"version-history":[{"count":1,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts\/13221\/revisions"}],"predecessor-version":[{"id":13222,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/posts\/13221\/revisions\/13222"}],"wp:attachment":[{"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/media?parent=13221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/categories?post=13221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appservgrid.com\/paw92\/index.php\/wp-json\/wp\/v2\/tags?post=13221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}