I am trying to join to files with dramatically different sizes (file 1: 1 column - 9000 rows, file 2: 13 cols, 26 million rows). I can't seem to get join to work. I have check to ensure that there are matches and have tried subsamples that work. The -a filenum flag lists all the rows, so join is... (4 Replies)
Hi,
I am trying to write a script that will use ls on a directory and list the files one at a time and their size. If the size is 0 i want it to ask me if I want to delete it (yes or no). If I say yes, I want it to delete but it won't know what the file name is just from running from the script.... (2 Replies)
Hi ,,
i have the below file...
D 2342135
B 214236
C argjlksd
V lskjrghaklsr
C slkrgj
B sdg4tsd
E aslkgjlkasg
i want to sort the lines into different files based on the starting letter of the line. so that i have different files for lines starting with a letter.
thanks (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Which files in /usr/bin whose names begin with “p” are python scripts? Store the numbered results in... (3 Replies)
Hi guys, I hope you can enlight me with a script I'm doing for Solaris 10.
Script goes like this:
#!/usr/bin/bash
fechahoy=`perl /export/home/info/John/fechamod.pl`
fechayer=`perl /export/home/info/John/fecha.pl`
echo $fechahoy
echo $fechayer
DAT1=`ssh ivt@blahblah ls -la... (1 Reply)
Hi,
I have lets say 10 files , I need to process them one by one.
So I need a command to get one file name at a time to process it into a variable
Example
Files
P1111.dat
P3344.dat
S344.dat
...
v_file_name = 'p111.dat' .. I will rename it to something after processing
... (1 Reply)
Need assistance in getting File size for the List of files using perl script . I have writtern 2 codes. One of them gives me the list of files and 2nd one give me the size for only 1 file.
I dont know how to club both of them to get the list of files with its size .
#!/usr/bin/perl -w... (11 Replies)
Good afternoon all,
I want to ask how to change some letter in my file with other letter in spesific line
eg.
data.txt
1
1
1
0
0
0
0
for example i want to change the 4th line with character 1.
How could I do it by SED or AWK.
I have tried to run this code but actually did not... (3 Replies)
Hi.
I'm trying to sort a list of items in a file alphabetically but starting from the letter 'X'. For instance if I had the following file;
test.txt
Z
A
T
W
Y
B
S
X
I would like the output to look like;
X
Y (8 Replies)
Discussion started by: mmab
8 Replies
LEARN ABOUT DEBIAN
sum
sum(3tcl) Cyclic Redundancy Checks sum(3tcl)__________________________________________________________________________________________________________________________________________________NAME
sum - Calculate a sum(1) compatible checksum
SYNOPSIS
package require Tcl 8.2
package require sum ?1.1.0?
::crc::sum ?-bsd | -sysv? ?-format fmt? ?-chunksize size? [ -filename file | -channel chan | string ]
_________________________________________________________________DESCRIPTION
This package provides a Tcl-only implementation of the sum(1) command which calculates a 16 bit checksum value from the input data. The
BSD sum algorithm is used by default but the SysV algorithm is also available.
COMMANDS
::crc::sum ?-bsd | -sysv? ?-format fmt? ?-chunksize size? [ -filename file | -channel chan | string ]
The command takes string data or a file name or a channel and returns a checksum value calculated using the sum(1) algorithm. The
result is formatted using the format(3tcl) specifier provided or as an unsigned integer (%u) by default.
OPTIONS -sysv The SysV algorithm is fairly naive. The byte values are summed and any overflow is discarded. The lowest 16 bits are returned as the
checksum. Input with the same content but different ordering will give the same result.
-bsd This algorithm is similar to the SysV version but includes a bit rotation step which provides a dependency on the order of the data
values.
-filename name
Return a checksum for the file contents instead of for parameter data.
-channel chan
Return a checksum for the contents of the specified channel. The channel must be open for reading and should be configured for
binary translation. The channel will no be closed on completion.
-chunksize size
Set the block size used when reading data from either files or channels. This value defaults to 4096.
-format string
Return the checksum using an alternative format template.
EXAMPLES
% crc::sum "Hello, World!"
37287
% crc::sum -format 0x%X "Hello, World!"
0x91A7
% crc::sum -file sum.tcl
13392
AUTHORS
Pat Thoyts
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category crc of
the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
SEE ALSO cksum(3tcl), crc32(3tcl), sum(1)KEYWORDS
checksum, cksum, crc, crc32, cyclic redundancy check, data integrity, security, sum
CATEGORY
Hashes, checksums, and encryption
COPYRIGHT
Copyright (c) 2002, Pat Thoyts <patthoyts@users.sourceforge.net>
crc 1.1.0 sum(3tcl)