Sponsored Content
Top Forums Shell Programming and Scripting Can process substitution be used as an input file to another program? Post 302328150 by bj0 on Tuesday 23rd of June 2009 01:52:11 PM
Old 06-23-2009
While not as simple as I had hoped, it certainly does work.

I also found that using the Zsh shell, you can force process substitution to automatically use a temporary file instead of a pipe with =().

So:
Code:
command --config =( cat configfile )

works, but not in Bash.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

File path with space as external input to the program

Hello I am getting error when the file (Folder or Application) path having space is given as external input to the shell program. It works fine for the files which has no spaces in the file name Thans, (5 Replies)
Discussion started by: keshav.murthy@r
5 Replies

2. Shell Programming and Scripting

How to run this program with only one input file at a time

i have a program ABC, which runs every two minutes and takes the input according to the a value called "pointer" files need to be processed by ABC are input0001 input0002 input0003 input0004 input0005 current value of pointer is 0001, now program runs and takes all the files from... (2 Replies)
Discussion started by: Prat007
2 Replies

3. Shell Programming and Scripting

Process substitution

Just playing around with process substitution. Hoping maybe someone can give me some help on what I'm doing wrong. When this script is run, "Null message body; hope that's ok" is returned and the script hangs. I can't seem to work out what I'm doing wrong. Here is the script: #!/bin/bash... (3 Replies)
Discussion started by: mandelbrot333
3 Replies

4. Shell Programming and Scripting

How to read the input from a file in background process?

Hi I have a script to run some other scripts automatically. But while running the script it should take the input value from a text file instead of taking from the keyboard. Please find last two lines of the script below. Here ans should be taken from a text file ineerly without displaying this... (1 Reply)
Discussion started by: shirdi
1 Replies

5. Shell Programming and Scripting

How to make AWK process an input file many many times?

By "many many times" I mean the times the input file is to be processed is unknown beforehand, it will be known when awk finishes processing the input file for the first time. So my question is: how to start over again from the first record of the input file when AWK finishes processing the... (7 Replies)
Discussion started by: kevintse
7 Replies

6. UNIX for Advanced & Expert Users

Help with command substitution in C program

Hi, I want to know if there's a cleaner way for assigning output of a unix command to a variable in C program . Example : I execute dirname fname and want the output to be assigned to a variable dname . Is it possible . I knew u can redirect the output to a file and then reread assigning... (5 Replies)
Discussion started by: royalbull
5 Replies

7. Shell Programming and Scripting

Help to write a script or program to automatic execute and link input file data

Output file template format <input_file_name>a</input_file_name> <total_length_size>b</total_length_size> <log_10_length_size>c</log_10_length_size> Input_file_1 (eg. sample.txt) SDFSDGDGSFGRTREREYWW Parameter: a is equal to the input file name b is equal to the total length of... (2 Replies)
Discussion started by: perl_beginner
2 Replies

8. UNIX for Dummies Questions & Answers

Process Substitution Question?

Hello to all. I'm new to this forum, so please go easy on me. =) I am working on a script to send two e-mail attachments in a single e-mail, and am running into a little bit of an issue when using process substitution. I am using the following: cat <(uuencode $1 <(basename $1)) <(uuencode... (5 Replies)
Discussion started by: rommager
5 Replies

9. Shell Programming and Scripting

How to give a text file as input while running a program?

Hi Friends, I am running a program /path/to/program -i 1 100 -o /path/to/output/op_1_100.txt In the above command, I have to try various number of combinations at the -i parameter and the output file name varies with each combination. Now, I have my -i parameter text file, which is like... (4 Replies)
Discussion started by: jacobs.smith
4 Replies

10. Shell Programming and Scripting

Problem with process substitution

i have tried process substitution, but run in some problems. this works: samtools view -h $SAMdir/$b.bam | htseq-count -m union -s no -q -t exon -i gene_id - $gtf > $b.count & but this not: htseq-count -m union -s no -q -t exon -i gene_id <(samtools view -h $SAMdir/$b.bam) $gtf >... (7 Replies)
Discussion started by: dietmar13
7 Replies
FC-PATTERN(1)															     FC-PATTERN(1)

NAME
fc-pattern - parse and show pattern SYNOPSIS
fc-pattern [ -cdVh ] [ --config ] [ --default ] [ -f format | --format format ] [ --version ] [ --help ] [ pattern [ element ... ] ] DESCRIPTION
fc-pattern parses pattern (empty pattern by default) and shows the parsed result. If --config is given, config substitution is performed on the pattern before being displayed. If --default is given, default substitution is performed on the pattern before being displayed. If any elements are specified, only those are printed. OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. -c --config Perform config substitution on pattern. -d --default Perform default substitution on pattern. -f --format format Format output according to the format specifier format. -V --version Show version of the program and exit. -h --help Show summary of options. pattern Parses and displays pattern (uses empty pattern by default). element If set, the element property is displayed for parsed pattern. SEE ALSO
FcNameParse(3) FcConfigSubstitute(3) FcDefaultSubstitute(3) FcPatternPrint(3) FcPatternFormat(3) fc-cat(1) fc-cache(1) fc-list(1) fc- match(1) fc-query(1) fc-scan(1) The fontconfig user's guide, in HTML format: /usr/share/doc/fontconfig/fontconfig-user.html. AUTHOR
This manual page was updated by Behdad Esfahbod <behdad@behdad.org>. 16 April 2012 FC-PATTERN(1)
All times are GMT -4. The time now is 04:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy