Some simple questions from a simple man.
If i wanted to count the number of files contained within a directory, say /tmp would ls -l /tmp ¦ wc -l suffice and will it be accurate?
second one: How would i check the number of files with a certain string in the filename, in the same directory.
... (2 Replies)
I need to count the number of files which have a search string, but counting the file only once
if search string is found.
eg: File1: Please note that there are 2 occurances of "aaa"
aaa
bbb
ccc
aaa
File2: Please note that there are 3 occurances of "aaa"
aaa
bbb
ccc... (1 Reply)
Hi all,
I am having problems counting commas (,) from a variable in shell scripting..
the variable contains similiar to: ID@NAME@DESCRIPTION,ID@NAME@DESCRIPTION, .....
It can go on and on..
So i need to count the number of sets i.e.( ID@NAME@DESCRIPTION is one set) and process the... (4 Replies)
Hi All,
I have written a script on this but it does not do the requisite job. My requirement is this:
1. I have two kinds of files each with different extensions. One set of files are *.dat (6000 unique DAT files all in one directory) and another set *.dic files (6000 unique DIC files in... (1 Reply)
I am trying to display the output of ls and also print the number of characters in EVERY file name. This is what I have so far:
#!/bin/sh
for x in `ls`; do
echo The number of characters in x | wc -m
done
Any help appreciated (1 Reply)
So I have a loop that stated if a directory exists or not. If it does it prints the number of files within that directory. I use this code...
result=`(ls -l . | egrep -c '^-')`
However, no matter which directory I input, it outputs the number "2"
What is wrong here? (4 Replies)
num=10
sed -n '$num p' test.txt
sed -n '10 p' test.txt works
however i am putting the sed command in a loop and the line number is not static
Can someone please help me how to achive this. (1 Reply)
Hi All,
I have a file test.txt.
Content of test.txt :
1 vinay se
2 kumar sse
4 kishore tl
I am extracting the content of file with below command.
awk '$2 ~ "vinay" {print $0}' test.txt
Now instead of hardcoding $2 is there any way pass $2 as variable and compare with a... (7 Replies)
I am trying read all the files from list into a variable line using bash. After there are read into the variable they are passed to a delete call. The files appear to be read line (as I can see them with the echo) by line into the variable, but the delete call is not removing them and I do not... (1 Reply)
I need to figure out how many times a location (columns 1 and 2) is present within a group of files. I figured using a combination of 'while read' and 'grep' I could count the number of instances but its not working for me.
cat file.txt | while read line
do
grep $line *08-new.txt | wc -l... (6 Replies)
Discussion started by: ncwxpanther
6 Replies
LEARN ABOUT LINUX
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)