WebNov 19, 2012 · 4 Answers. Sorted by: 3. The easiest way is to convert the date to a unix time_t value (i.e. seconds since the beginning of the epoch, or '1-1-1970 00:00:00'), and then substract 30 days * 86400 seconds per day from that number. e.g. the following example uses set -x so that you can see the value of the D variable as it changes. WebJul 13, 2024 · It is an upgrade of the earlier Bourne shell that was first introduced in Version 7 Unix. Learning bash shell scripting will allow you to understand other shell scripts much faster. So, try these simple examples yourself to gain the first-hand experience. 1. Hello World. Programmers often learn new languages via learning the hello world program.
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Web$ date --date='84 days ago' Wed Jan 20 13:56:33 IST 2024 8. To display the date 2 months ago. $ date --date='2 months ago' Fri Jun 5 15:55:13 IST 2024 9. To print the date of the … WebSep 8, 2009 · In bash (>=4.2) it is preferable to use printf's built-in date formatter (part of bash) rather than the external date (usually GNU date). As such: # put current date as yyyy-mm-dd in $date # -1 -> explicit current date, bash >=4.3 defaults to current time … how do i find a number
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WebA shell script is a computer program designed to be run by the Unix/Linux shell which could be one of the following: The Bourne Shell The C Shell The Korn Shell The GNU … WebFeb 28, 2024 · Getting the current date and time in a Bash script is a common task that can be accomplished using the date command. By default, the date command returns … WebMar 21, 2024 · date command is used to display the system date and time. date command is also used to set date and time of the system.By default the date command displays the date in the time zone on which unix/linux operating system is configured.You must be the super-user (root) to change the date and time. how do i find a network