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Top Forums UNIX for Dummies Questions & Answers How to check if an application has been installed on a unix/linux box? Post 302534056 by fpmurphy on Sunday 26th of June 2011 09:37:53 PM
Old 06-26-2011
Not as simple as you think. Many Linux distributions are moving away from BSD or SysV startup scripts towards systemd or something similar. Solaris 10 went to Service Manager.
 

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SYSTEMD-SYSV-GENERATOR(8)				      systemd-sysv-generator					 SYSTEMD-SYSV-GENERATOR(8)

NAME
systemd-sysv-generator - Unit generator for SysV init scripts SYNOPSIS
/lib/systemd/system-generators/systemd-sysv-generator DESCRIPTION
systemd-sysv-generator is a generator that creates wrapper .service units for SysV init[1] scripts in /etc/init.d/* at boot and when configuration of the system manager is reloaded. This will allow systemd(1) to support them similarly to native units. LSB headers[2] in SysV init scripts are interpreted, and the ordering specified in the header is turned into dependencies between the generated unit and other units. The LSB facilities "$remote_fs", "$network", "$named", "$portmap", "$time" are supported and will be turned into dependencies on specific native systemd targets. See systemd.special(5) for more details. SysV runlevels have corresponding systemd targets (runlevelX.target). The wrapper unit that is generated will be wanted by those targets which correspond to runlevels for which the script is enabled. systemd does not support SysV scripts as part of early boot, so all wrapper units are ordered after basic.target. systemd-sysv-generator implements systemd.generator(7). SEE ALSO
systemd(1), systemd.service(5), systemd.target(5) NOTES
1. SysV init https://savannah.nongnu.org/projects/sysvinit 2. LSB headers http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html systemd 237 SYSTEMD-SYSV-GENERATOR(8)
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