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Full Discussion: find , grep
Top Forums UNIX for Dummies Questions & Answers find , grep Post 302163602 by james94538 on Friday 1st of February 2008 03:43:25 PM
Old 02-01-2008
find , grep

HI
what is the difference between find and grep

if I want to find all the files from different directories which contain "ORA" error, and the line number in each file which has ORA error
should I use pipeline ?
thanks

James
 

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pid(n)                                                         Tcl Built-In Commands                                                        pid(n)

__________________________________________________________________________________________________________________________________________________

NAME
pid - Retrieve process identifiers SYNOPSIS
pid ?fileId? _________________________________________________________________ DESCRIPTION
If the fileId argument is given then it should normally refer to a process pipeline created with the open command. In this case the pid command will return a list whose elements are the process identifiers of all the processes in the pipeline, in order. The list will be empty if fileId refers to an open file that is not a process pipeline. If no fileId argument is given then pid returns the process identi- fier of the current process. All process identifiers are returned as decimal strings. EXAMPLE
Print process information about the processes in a pipeline using the SysV ps program before reading the output of that pipeline: set pipeline [open "| zcat somefile.gz | grep foobar | sort -u"] # Print process information exec ps -fp [pid $pipeline] >@stdout # Print a separator and then the output of the pipeline puts [string repeat - 70] puts [read $pipeline] close $pipeline SEE ALSO
exec(n), open(n) KEYWORDS
file, pipeline, process identifier Tcl 7.0 pid(n)
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