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csp_helper(1) USER COMMANDS csp_helper(1)


csp_helper - A collection of caspar helper scripts


csp_install dir (directory) file (file)

csp_mkdircp dir (directory) file (file)

csp_scp_keep_mode h ([user@]host) dir (directory) file (file)

csp_sucp h ([user@]host) dir (directory) file (file)


The scripts csp_install, csp_mkdircp, csp_scp_keep_mode and csp_sucp are helpers for caspar(7). These scripts typically are not invoked directly, but via a Makefile which uses caspar. See the notes on csp_PUSH in caspar(7) for information on how to link csp_install, csp_scp_keep_mode and csp_sucp to caspar.


csp_install creates the required directory (if needed) and installs the file, preserving timestamps. It uses install(1).

install EXAMPLES

csp_INSTALL_OPTIONS='--owner=www-data --group=www-data' \
csp_INSTALL_MODE=ugo=r \
csp_install /srv/www index.html

csp_INSTALL_MODE=u=rwx,go= csp_install /usr/local/sbin mkpasswd


csp_install honors csp_INSTALL_OPTIONS and csp_INSTALL_MODE (default is u=rw,go=r).


csp_mkdircp calls mkdir(1) and cp(1). csp_mkdircp is used like csp_CP. use csp_mkdircp if you frequently have to bootstrap installation on a fresh system, on which needed directories don't exist yet. csp_mkdircp makes sure the target directory exists before calling cp(1), by calling mkdir -p first.

scp_keep_mode DESCRIPTION

csp_scp_keep_mode uses ssh to copy a file to a remote host, keeping its file permission mode. The trick used is a combination of mktemp(1) and mv(1). Useful if you'd like to be sure a file gets installed e.g. group writable, without fiddling with permission bits on the remote host.

scp_keep_mode EXAMPLE

chmod g+w rc
csp_scp_keep_mode root@gandalf /etc/uruk rc

scp_keep_mode ENVIRONMENT

csp_scp_keep_mode honors csp_SSH ("ssh" by default).


csp_sucp calls tar(1) from within sudo(1) from within ssh(1). This allows one to copy files to accounts on hosts one can only reach by calling sudo on the ssh-reachable remote host.

Typically, one wants to install a root-owned file, but one does not want to allow access to the root-account directly from ssh. Typically sudo is used as an extra line of defense.

NB: if your sudo prompts for a password, be sure to have line

Defaults !tty_tickets

in your sudoers file: we first call sudo -v, than we call sudo to write the data. Since we use ssh to get to the host, we'll use a different tty for both sudo calls.


Some examples:

csp_sucp rms@bilbo /etc fstab

csp_sucp monty-python commit/ trailer.txt


Joost van Baal-Ilić


caspar(7) The caspar homepage is at .

7 сеп 2022 csp_helper 20220907