03-23-2011
Quote:
Originally Posted by
sumoka
combining cat & Cut will cause spawning and will utilize more CPU threads which is fine for smaller files.
Not so much "fine" as "negligible".
Quote:
In case of bigger files as in my case, it is better to directly operate the Cut command on the file. This will result in optimum CPU utilization.
Correct. It's a bad habit in general -- test data tends to be small so the problem isn't apparent, only when you make it do real work will you run into trouble.
This User Gave Thanks to Corona688 For This Post:
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
how do you show just the used disk space. using the cut and df command?? or does anyone have any other suggestions on how to do it a better way? (3 Replies)
Discussion started by: rookie22
3 Replies
2. Shell Programming and Scripting
Hi,
I want to cut from a particular position to a particular position and retain the rest.
I tried this
cut -c31-51 file1.txt > file2.txt
But The characters from the position 31 to 51 were only present in file2.txt.
Is there a way to reverse this i.e to retain the rest except from... (1 Reply)
Discussion started by: ragavhere
1 Replies
3. Shell Programming and Scripting
Gurus,
I need help with the cut command :
I have a file with garbage charaters at the beginning of each record; but these characters are not of the same length;
First record has 3 garbage chars to be removed; rest have 2;
If the length was consistent across all the records, I could have... (3 Replies)
Discussion started by: tru_tell
3 Replies
4. Shell Programming and Scripting
Hi
Can anyone what I am doing wrong while using cut command.
for f in *.log
do
logfilename=$f
Log "Log file Name: $logfilename"
logfile1=`basename $logfilename .log`
flength=${#logfile1}
Log "file length $flength"
from_length=$(($flength - 15))
Log "from... (2 Replies)
Discussion started by: dgmm
2 Replies
5. UNIX for Dummies Questions & Answers
hay
i am trying to get JUST the PID from the ps command.
my command line is:
ps -ef | grep "mintty" | cut -d' ' -f2
but i get an empty line. i assume that the delimiter is not just one space character, but can't figure out what should i do in order to do that.
i know i can use awk or cut... (8 Replies)
Discussion started by: ran ber
8 Replies
6. Shell Programming and Scripting
hi,
i have a file
abc,"an,ab",cde,efg
abc,anab,cde,efg and need to cut the second field so the output should be abc,cde,efg and i have used cut -d',' -f1-1,3- but its giving me
abc,ab",cde,efg
abc,cde,efg (4 Replies)
Discussion started by: ATWC
4 Replies
7. UNIX for Beginners Questions & Answers
I'm a complete beginner in UNIX (and not a computer science student either), just undergoing a tutoring course. Trying to replicate the instructions on my own I directed output of the ls listing command (lists all files of my home directory ) to My_dir.tsv file (see the screenshot) to make use of... (9 Replies)
Discussion started by: scrutinizerix
9 Replies
8. Shell Programming and Scripting
VARIABLE="jhovan 5259 5241 0 20:11 ? 00:00:00 /proc/self/exe --type=gpu-process --channel=5182.0.1597089149 --supports-dual-gpus=false --gpu-driver-bug-workarounds=2,45,57 --disable-accelerated-video-decode --gpu-vendor-id=0x80ee --gpu-device-id=0xbeef --gpu-driver-vendor... (3 Replies)
Discussion started by: SkySmart
3 Replies
9. Shell Programming and Scripting
im currently running the following command to grab all arguments in front of a script, directly from the process table.
# cat /tmp/allmyprocs
ubuntu 9933 27793 0 03:29 pts/0 00:00:00 /bin/sh ./prying.sh
ubuntu 9941 9933 0 03:29 pts/0 00:00:00 sh
ubuntu 9952 9941 0 03:29... (1 Reply)
Discussion started by: SkySmart
1 Replies
LEARN ABOUT SUSE
page_util_quote
page_util_quote(n) Parser generator tools page_util_quote(n)
__________________________________________________________________________________________________________________________________________________
NAME
page_util_quote - page character quoting utilities
SYNOPSIS
package require page::util::quote ?0.1?
package require snit
::page::util::quote::unquote char
::page::util::quote::quote'tcl char
::page::util::quote::quote'tclstr char
::page::util::quote::quote'tclcom char
_________________________________________________________________
DESCRIPTION
This package provides a few utility commands to convert characters into various forms.
API
::page::util::quote::unquote char
A character, as stored in an abstract syntax tree by a PEG processor (See the packages grammar::peg::interpreter, grammar::me, and
their relations), i.e. in some quoted form, is converted into the equivalent Tcl character. The character is returned as the result
of the command.
::page::util::quote::quote'tcl char
This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser, will
regenerate the character in question and is 7bit ASCII. The string is returned as the result of this command.
::page::util::quote::quote'tclstr char
This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser and
will generate a human readable representation of the character in question. The string is returned as the result of this command.
The string does not use any unprintable characters. It may use backslash-quoting. High UTF characters are quoted to avoid problems
with the still prevalent ascii terminals. It is assumed that the string will be used in a double-quoted environment.
::page::util::quote::quote'tclcom char
This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser when
used within a Tcl comment. The string is returned as the result of this command.
BUGS, IDEAS, FEEDBACK
This document, will undoubtedly contain bugs and other problems. Please report such in the category page of the Tcllib SF Trackers
[http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have.
KEYWORDS
page, parser generator, quoting, text processing
COPYRIGHT
Copyright (c) 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net>
page 1.0 page_util_quote(n)