Last Change: 2018-09-07, 16:50
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rancid_par − parallel command processing
rancid_par [−dfiqx] [−c command] [−l logfile] [−n #] file [file...]
rancid_par takes a list of files to run a command on. The first line of each file begins with a colon (:) or a pound-sign (#). If a colon, the remainder of the line is a command to run for each of the subsequent lines. If a pound-sign, then each subsequent line is a (self-contained) command, unless the −c option was specified, in which case it operates as if the argument to −c had followed a colon on the first line.
In each of the cases where the lines of the file following the first are not commands (i.e.: colon or −c), instances of open-close braces ({}) in the command will be replaced by these values.
For example, a inputfile whose contents is:
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: echo {} |
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a |
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b |
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c |
run with rancid_par like so:
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%rancid_par −q inputfile |
will produce the following output (order will vary):
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b |
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a |
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c |
The command-line options are as follows:
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−c |
Command to be run on each of the arguments following the command-line options, where the first line of the input file(s) begins with a pound-sign (#). |
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−d |
Print debugging information on standard error (stderr). |
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−f |
No file or STDIN, just run a quantity of the command specified with −c. |
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−i |
Run commands interactively through (multiple) xterm(1) processes. |
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−l |
Prefix of logfile name, as in prefix.N where N is the rancid_par process number ([0..]). |
Default: par.log.<time>.[0..]
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−n |
Number of simultaneous processes. |
Default: 3
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−q |
Quiet mode. Do not log anything. −q is mutually exclusive with the −x and −l options and the option appearing last will take precedence. |
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−x |
View rancid_par logs in real-time via an xterm(1). |
par.log.T.N Log file; where T is the current time in seconds since the
epoch and N is the rancid_par process number ([0..]).