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Linux / Unix Command: touch
Command Library

NAME

touch - change file timestamps

SYNOPSIS

touch [OPTION]... FILE...

DESCRIPTION

Update the access and modification times of each FILE to the current time.

Mandatory arguments to long options are mandatory for short options too.

-a
change only the access time
-B, --backward=SECONDS
Modify the time by going back SECONDS seconds. For example, touch -r foo -B 5 bar will make the file bar 5 seconds older than file foo.
-c, --no-create
do not create any files
-d, --date=STRING
parse STRING and use it instead of current time
-F, --forward=SECONDS
Modify the time by going forward SECONDS seconds. For example, touch -r foo -F 5 bar will make the file bar 5 seconds newer than file foo.
-f
(ignored)
-m
change only the modification time
-r, --reference=FILE
use this file's times instead of current time
-t STAMP
use [[CC]YY]MMDDhhmm[.ss] instead of current time
--time=WORD
set time given by WORD: access atime use (same as -a) modify mtime (same as -m)
--help
display this help and exit
--version
output version information and exit

Note that the -d and -t options accept different time-date formats.

SEE ALSO

The full documentation for touch is maintained as a Texinfo manual. If the info and touch programs are properly installed at your site, the command
info touch

should give you access to the complete manual.


Important: Use the man command (% man) to see how a command is used on your particular computer.

>> Linux/Unix Command Library

>> Shell Command Library

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