![]() ![]() ![]() Before this moment millions of applications will need to either adopt a new convention for time stamps or be migrated to 64-bit systems which will buy the time stamp a "bit" more time. On this date the Unix Time Stamp will cease to work due to a 32-bit overflow. This is very useful to computer systems for tracking and sorting dated information in dynamic and distributed applications both online and client side. It should also be pointed out (thanks to the comments from visitors to this site) that this point in time technically does not change no matter where you are located on the globe. Therefore, the unix time stamp is merely the number of seconds between a particular date and the Unix Epoch. This count starts at the Unix Epoch on January 1st, 1970 at UTC. Usually we can use these three times to sort files or folders, as Linux ls sort.The unix time stamp is a way to track time as a running total of seconds. (See below.) If the output is to a terminal, a total sum for all the file sizes is output on a line before the long listing. l (The lowercase letter ``ell''.) List in long format. mtime: modify time, which shows the last time when the content of. The ls and stat commands do not modify the access time of the file. atime: access time, which shows the last time the content in the file was accessed. First, let’s look at the meaning of the three time attributes of linux. c Use time when file status was last changed for sorting (-t) or long printing (-l). Use the linux stat command or the linux ls command. Linux chattr command can also change the ctime. assume the file is -rwxr-xr-x (755) then Code: chmod 755 filename you have to own the file to do this will set ctime to now. You simply specify the filename as a command line parameter, no oother options are needed. The file creation date (ctime) is not really the creation date in unix, it is the last time the inode data and some other metadata was modified. u Use time of last access, instead of last modification of the file for sorting (-t) or long printing (-l). The default behavior of touch command is to change all three timestamps associated with a file to the current system time. rwxr-xr-x 1 ylspirit staff 12 Jun 11 22:27 file rwxr-xr-x 1 ylspirit staff 12 Jun 11 22:22 file rwxr-xr-x 1 ylspirit staff 12 Jun 11 22:24 file x Display information in a more verbose way as known from some Linux distributions. This format is passed directly to strftime(3). t timefmt Display timestamps using the specified format. s Display information in ``shell output'', suitable for initializing variables. That is, for all the fields in the stat structure, display the raw, numerical value (for example, times in seconds since the epoch, etc.). md5sum /etc/mtab > ' (date +'YmdIMp'). When run as readlink, error messages are automatically suppressed. If you want to use the current datetime as a filename, you can use date and command substitution. q Suppress failure messages if calls to stat(2) or lstat(2) fail. n Do not force a newline to appear at the end of each piece of output. The information reported by stat will refer to the target of file, if file is a symbolic link, and not to file itself. Code: chmod 755 filename you have to own the file to do this. assume the file is -rwxr-xr-x (755) then. You can also use the timedatectl command to change the date and time. The file creation date (ctime) is not really the creation date in unix, it is the last time the inode data and some other metadata was modified. The output will show the new date and time that has been set. Replace YYYY-MM-DD HH:MM:SS with the actual date and time you want to set. You can change the modification time of a file using -m option. ![]() See the FORMATS section for a description of valid formats. Type sudo date -s YYYY-MM-DD HH:MM:SS and press Enter to change the date and time. f format Display information using the specified format. Hi, As i know, we can change the time stamp of a file by touch command, i did change in a file and it is looking as given ls -l abcd -rw-r-r- 1 batsoqa sicusers 0 abcd actually i want to see the output like this -rw-r-r- 1 batsoqa sicusers. F As in ls(1), display a slash (`/') immediately after each pathname that is a directory, an asterisk (`*') after each that is exe-cutable, an at sign after each symbolic link, a percent sign (`%') after each whiteout, an equal sign (`=') after each socket, and a vertical bar (`|') after each that is a FIFO. ![]()
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