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UNIX for Dummies Questions & Answers
Speeding up a Shell Script (find, grep and a for loop)
Post 302223668 by Dave Stockdale on Monday 11th of August 2008 04:36:02 AM
08-11-2008
Ok, thanks.
I've made these changes. It still takes a little while to complete, but this is due to the number of PDFs that aren't linked to more than anything else.
After the first time this is run for real, and all of the PDFs not linked to are archived, the process will be much quicker. I'm probably going to add it to a cron or something so that it runs once a week automatically, and I won't have to worry about unused files wasting disk space
Thanks for all your help!
I've made these changes. It still takes a little while to complete, but this is due to the number of PDFs that aren't linked to more than anything else.
After the first time this is run for real, and all of the PDFs not linked to are archived, the process will be much quicker. I'm probably going to add it to a cron or something so that it runs once a week automatically, and I won't have to worry about unused files wasting disk space
Thanks for all your help!
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cron
cron(8) System Manager's Manual cron(8) NAME
cron - The system clock daemon SYNOPSIS
/usr/sbin/cron DESCRIPTION
The cron daemon runs shell commands at specified dates and times. Commands that are to run according to a regular or periodic schedule are found within the crontab files. Commands that are to run once only are found within the at files. You submit crontab and at file entries by using the crontab and at commands. Because the cron process exits only when killed or when the system stops, only one cron daemon should exist on the system at any given time. Normally, you start the cron daemon from within a run command file. During process initialization and when cron detects a change, it examines the crontab and at files. This strategy reduces the overhead of checking for new or changed files at regularly scheduled intervals. The cron command creates a log of its activities. The cron daemon must be started from the system startup scripts because it must begin execution without a login user ID set. The cron daemon starts each job with the following process attributes stored with the job by the invoking process: Login user ID Effective and real user IDs Effective and real group IDs Supplementary groups It also establishes the following attributes from the authentication profile of the account associated with the login user ID of the invok- ing process: Audit control and disposition masks Kernel authorizations DIAGNOSTICS
The at and batch programs will refuse to accept jobs submitted from processes whose login user ID is different from the real user ID. FILES
Specifies the command path. Main cron directory Directory containing the crontab files. List of allowed users. List of denied users His- tory information for cron Queue description file for at, batch, and cron RELATED INFORMATION
Commands: at(1), crontab(1), rc0(8), rc2(8), rc3(8) Files: queuedefs(4) delim off cron(8)