without using ls, just using echo so purely pattern matching
I can say echo */ <-- lists directories
but how would I match files? surely something like *!/ or * but neither work ?
it seems like there isn't much that I can put in but surely i should be able to put any ascii... (1 Reply)
Hi everyone,
I have a Linux OS in my PC (older version 9). Its default shell is bash. Whenever I try to run some Perl program it throws error ! eg, if I run this simple PERL program ,
#!/usr/bin/perl
printf "\lHello \n";
$var=3 ;
printf $var;
@list=(1,2,3);
printf "@list";... (6 Replies)
I have a script that is working:
#!/bin/bash
sftp user@domain.com <<EOF
cd somedir
mget *.csv
quit
EOF
but on a crontab I want to only pull newer files, so I want to do something like:
while read ls current dir local file != true do
mget that new file
but I'm not sure the syntax... (2 Replies)
completion-ignore-case option doesn't work in my version:
/home/user $ echo $BASH_VERSION
3.2.48(1)-release
/home/user $ ls -l *
-rw-r--r-- 1 user user 0 2009-10-18 00:09 somefile
-rw-r--r-- 1 user user 0 2009-10-18 00:09 Somefile
/home/user $ set completion-ignore-case on
But when I... (2 Replies)
I'm trying to write a bash script and call it "compile" such that running it allows me to compile multiple files with the options "-help," "-backup," and "-clean". I've got the code for the options written, i just can't figure out how to read the input string and then translate that into option... (5 Replies)
Hi,
I'm trying to write a script that checks gvfs to see if a mount exists so I can run it from network-manager's status hooks. I thought I'd pipe the output of gvfs-mount -l to grep for the particular mounts I care about. When I do this in a bash script:
cmnd="gvfs-mount -l | grep -i... (4 Replies)
flamingo:~ joliver$ sudo find / -nogroup
find: /dev/fd/4: No such file or directory
find: /home: No such file or directory
find: /Library: No such file or directory
find: /net: No such file or directory
find: /Network: No such file or directory
find: /private: No such file or directory
find:... (2 Replies)
Dear All,
I would like move some directories in another location.
Basically, my ls -lis
drwxr-xr-x 3 XXXXXXXXXXXXXXXXXXXX 4096 Feb 24 02:18 data.N701_N502.ABCDE
-rw-r--r-- 1 XXXXXXXXXXXXXXXXXXXX 185865797 Feb 23 11:27 data.N701_N502.ABCDE_file1
-rw-r--r-- 1 XXXXXXXXXXXXXXXXXXXX... (2 Replies)
Hi everyone,
I've an issue trying to soustracte two dates, e.g:
d1=$(date -d "Nov 18, 2017" +%s)
d2=$(date +%s) # Today we are 2017-11-16
echo "$(( (d1 - d2) / 86400 ))"
Output:
1
I don't understand why it doesn't work. for me, it should give "18 - 16 = 2".
Much appreciated... (1 Reply)
Bash version 4.4.20 / Ubuntu 16.0.4
Hello,
I tried to write a script that gathers some data and passes them to an executable.
The executed application answers with an error. The echo output in the script returns correct values.
If I copy/paste the last echo command, it get's executed... (2 Replies)
Discussion started by: sushi2k7
2 Replies
LEARN ABOUT REDHAT
ppmtopgm
ppmtopgm(1) General Commands Manual ppmtopgm(1)NAME
ppmtopgm - convert a portable pixmap into a portable graymap
SYNOPSIS
ppmtopgm [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original
image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b.
Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can
read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting
color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original
colors, not necessarily a way that looks like a black and white photograph.
QUOTE
Cold-hearted orb that rules the night
Removes the colors from our sight
Red is gray, and yellow white
But we decide which is right
And which is a quantization error.
SEE ALSO pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
10 April 2000 ppmtopgm(1)