I have a bunch of files which I need to transfer to another location... and some of these I need to skip.
For e.g. let us say the files are:
and I only want to move the first two.
I want to do something like:
which doesn't work due to bad syntax. Is there some way of doing this without involving grep and xargs? I would like to do it with a single command if possible...
Hi,
I have a script that at one point prints to a file as follows:
printf -- $2 > ~/.mydir/$1
The idea is to print to a hidden directory .mydir in my home directory. I've already sanitized the inputs and $1 is in the format path1/path2/filename and $2 is some user input.
When I run this... (2 Replies)
Hi ,
could anyone help me out with this problem.
sample.txt has this content :
u001- this is used for project1 ||
u002- this is used for p2|| not to be printed
u003- this is used
for project3 ||
u004- this is
used for p4 ||
u005- this is used for project5 ||
u006- this is used for p6... (9 Replies)
Say you have this numeric variable that can be set by the user but you never want it to leave a certain range when it gets printed. How could you use parameter expansion such that it will never expand outside of that boundary? Thanks
---------- Post updated at 11:09 PM ---------- Previous update... (3 Replies)
Hi,
I'm trying to figure out whether some files exist. Locations of those file are stored in a plain text file called temp.txt in this way:
All environment variables ($LIB_HOME and $ORACLE_HOME) have been set using export command.
Then I do:
while read line; do ] && echo "OK ==> $line" ||... (6 Replies)
Heyas
Recently i wanted to help someone with an awk script, but the end-script didnt work as expected.
He wanted, if HOME was empty, to get the HOME of the current USER from /etc/passwd.
At first i tried hardcoded with root:
awk -F: '/^root/ {print $6}' /etc/passwd
As that worked, i've... (4 Replies)
Hello.
I cannot write a command without using eval.
Any help is welcome
Note 1 : What does the function SOMETHING has no importance.
Note 2 : What does the command find has no importance.
It is an expansion variable problem : where to put or or or anythings else
What works (FILTRE_1... (8 Replies)
(Using Bash 4.4)
When I write something like dir="~/dox"
ls $dir then I get the message that the directory '~/docs' does not exist. I understand that the tilde is not expanded at the time of the above assignment because of the quotes. But why is it not expanded at the time when the ls command is... (2 Replies)
Hello All,
Could you please do help me here as I would like to perform parameter expansion in shell over a parameter expansion.
Let's say I have following variable.
path="/var/talend/nat/cdc"
Now to get only nat I could do following.
path1="${path%/*}"
path1="${path1##*/}"
Here... (8 Replies)
Discussion started by: RavinderSingh13
8 Replies
LEARN ABOUT FREEBSD
ppmquantall
ppmquantall(1) General Commands Manual ppmquantall(1)NAME
ppmquantall - run ppmquant on a bunch of files all at once, so they share a common colormap
SYNOPSIS
ppmquantall [-ext extension] ncolors ppmfile ...
DESCRIPTION
Takes a bunch of portable pixmap as input. Chooses ncolors colors to best represent all of the images, maps the existing colors to the new
ones, and overwrites the input files with the new quantized versions.
If you don't want to overwrite your input files, use the -ext option. The output files are then named the same as the input files, plus a
period and the extension text you specify.
Verbose explanation: Let's say you've got a dozen pixmaps that you want to display on the screen all at the same time. Your screen can
only display 256 different colors, but the pixmaps have a total of a thousand or so different colors. For a single pixmap you solve this
problem with ppmquant; this script solves it for multiple pixmaps. All it does is concatenate them together into one big pixmap, run
ppmquant on that, and then split it up into little pixmaps again.
(Note that another way to solve this problem is to pre-select a set of colors and then use ppmquant's -map option to separately quantize
each pixmap to that set.)
SEE ALSO ppmquant(1), ppm(5)AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
27 July 1990 ppmquantall(1)