07-26-2008
learning about pipes!
im trying to figure out how to do the following:
using pipes to combine grep and find commands to print all lines in files that start with the letter f in the current directory that contain the word "test" for example?
again using pipes to combine grep and find command, how can I print all the file names starting with f whose names also contain the word "test", again in the current directory?
combining grep and cat commands , i need the print the number of lines in "testa.txt" and "testb.txt" that contain the string hello.c
combining tail and grep commands, if the string "pipes" is in the last 5 lines of a test.txt file, then i want to print the lines it is in.
combing head, tail, grep commands, if the string "pipes" is in lines 10-14 of file test.txt, the print the lines it is in.
thanks for any help!
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LEARN ABOUT SUSE
pfsinmulti
pfsinmulti(1) General Commands Manual pfsinmulti(1)
NAME
pfsinmulti - read several streams of frames and write pfs streams to named pipes
SYNOPSIS
pfsinmulti pfsinmulti <file> [--frames f:s:t] [--skip-frames] [<file>...] -- command @1 @2 [@3 ...]
DESCRIPTION
Use this command to read several animation sequences and write them to pfsstreams. This command is useful with those pfs programs, which
take several pfs streams as arguments. For example, the following command can be used to combine two animations so that there are stitched
together:
pfsinmulti anim_a-%04d.hdr anim_b-%04d.hdr -- pfscat @1 @2
arguments @1 and @2 are replaced with named pipes for anim_a-%04d.hdr and anim_b-%04d.hdr frames respectively. command argument is obliga-
tory and it must be preceded with '--'. There should be as many @1, @2, .., @n arguments as there are animation sequences given as input.
Arguments --frames, --skip-frames and other options are handled the same way as in pfsin program. Also pfsinmulti recognizes the same file
formats as pfsin.
Technically, pfsinmulti creates a named pipe for each pfsstream, replaces @n arguments with the names of those pipes and deletes the pipes
when command finishes.
EXAMPLES
pfsinmulti image1.hdr image2.hdr -- cat @1 @2 | pfsview
Does the same as 'pfsv image1.hdr image2.hdr' but in much more sophisticated way.
SEE ALSO
pfsin(1)
BUGS
This command currently does not handle multiple frames given with a %d pattern in case of LDR formats: JPEG, PNG, PNM.
Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de>.
pfsinmulti(1)