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Full Discussion: alias
Top Forums UNIX for Dummies Questions & Answers alias Post 302414693 by Scott on Tuesday 20th of April 2010 06:21:23 PM
Old 04-20-2010
Quote:
Originally Posted by verdepollo
You can also export aliases in KSH and use them in a subshell by adding the -x flag, as long as your script does not call again the interpreter (the hashbang).

Code:
alias -x ll="ls -l"

Whether that works or not is dependent also on the implementation of fork and exec.

For example on Solaris:
Code:
$ alias -x lsal='ls -al'

$ cat myLS
lsal

$ ./myLS
total 106
drwxr-xr-x  40 root     root        1024 Apr 14 20:08 ..
-rw-r--r--   1 root     root          30 Apr 21 00:08 ogl_select306
-r--r--r--   1 root     root          11 Apr 21 00:08 .X0-lock
drwxrwxrwt   2 root     root         176 Apr 21 00:08 .X11-unix
drwxrwxr-x   2 root     root         176 Apr 21 00:08 .X11-pipe
drwxr-xr-x   2 noaccess noaccess     177 Apr 21 00:08 hsperfdata_noaccess
-rw-r--r--   1 root     root         296 Apr 21 00:10 breg_business_logic_20100421121008806.log
drwxrwxr-x   2 root     root         177 Apr 21 00:10 .ICE-unix
drwxrwxrwt   3 root     root         182 Apr 21 00:10 OraTemp
-rw-r--r--   1 root     root         262 Apr 21 00:10 rootswup.trc
drwxr-xr-x   2 root     root         178 Apr 21 00:10 hsperfdata_root
drwxrwxrwx   2 root     root         184 Apr 21 00:10 .removable
drwxrwxrwt   9 root     sys          956 Apr 21 00:11 .
-rwx------   1 root     root           7 Apr 21 00:14 myLS

BSD:
Code:
$ alias -x lsal='ls -al' 

$ ./myLS
./myLS: line 1: lsal: not found

 

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LEARN ABOUT POSIX

systemd-volatile-root.service

SYSTEMD-VOLATILE-ROOT.SERVICE(8)			   systemd-volatile-root.service			  SYSTEMD-VOLATILE-ROOT.SERVICE(8)

NAME

       systemd-volatile-root.service, systemd-volatile-root - Make the root file system volatile

SYNOPSIS

       systemd-volatile-root.service

       /lib/systemd/systemd-volatile-root

DESCRIPTION

       systemd-volatile-root.service is a service that replaces the root directory with a volatile memory file system ("tmpfs"), mounting the
       original (non-volatile) /usr inside it read-only. This way, vendor data from /usr is available as usual, but all configuration data in
       /etc, all state data in /var and all other resources stored directly under the root directory are reset on boot and lost at shutdown,
       enabling fully stateless systems.

       This service is only enabled if full volatile mode is selected, for example by specifying "systemd.volatile=yes" on the kernel command
       line. This service runs only in the initial RAM disk ("initrd"), before the system transitions to the host's root directory. Note that this
       service is not used if "systemd.volatile=state" is used, as in that mode the root directory is non-volatile.

SEE ALSO

       systemd(1), systemd-fstab-generator(8), kernel-command-line(7)

systemd 237													  SYSTEMD-VOLATILE-ROOT.SERVICE(8)
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