Why do you feel creating a temp file is a constraint ?
even sort uses temp files
check out the option -T
I am curious if it is possible to do it without temp file, because I can set the data into a variable, but the only problem is the newlines not being stored as well. Is this a limitation with the 'set' command, or the 'echo' command. This a CS class project I have to complete. So in the end, I have to give read and execute permissions to my professor. If I give him r+x permissions and he runs the script from my personal folder, would it not be able to create a temp file, since he does not have write permissions in my folder?
Hi
I am using nohup command in script(say nohup ls- ltr > somefile 2>&1 & ). I dont want any kind of output to be displayed on screen. When i tried the above nohup it still gives me some out put on screen like
2991
Done >somefile 2>&1
Please you let me know what is... (3 Replies)
Hi,
When I run the following command in terminal it works. The string TEST is appended to a file silently.
echo TEST | tee -a file.txt &>/dev/null
However, when I paste this same line to a file, say shell1.sh, and use bourne shell .
I run this file in terminal, ./shell1.sh.
However I... (1 Reply)
I am using tar command to append daily database backups on tape. "tar --append " command help me to do this.
But tar --append command does not produce any output on stdout if it succeed.
I want the output for that appended command to a log file.
This log file should contain only the name of the... (0 Replies)
Hi All,
I want to display content on command promt and also write in file.
For that iI ahve to write two sentence
echo "XXXXXXX"
echo "XXXXXXXX" >> 1.txt
Is there any way to write in one echo statement (1 Reply)
I am trying to write a simple script which prints some output, but also saves the same in a logfile.
echo hello
echo hello >> logfile
Is there anyway i Can write single sentence of code and get the same result:
( i am using CSH ) (4 Replies)
Dear All,
./waf --run scratch/myfirst > log.out 2>&1
The above is a command line to redirect the output to a file called log.out.
what is the 2>&1 part for ?
Thank you (2 Replies)
Hello,
I'm new to Unix (working with OS X 10.8.5) and therefore at the beginning of my adventure. If I ask something stupid, then this is not intentional, but simple nescience. :rolleyes:
I have a problem with the redirection of text file content to echo. I was experimenting with redirection... (6 Replies)
Hi,
I have a peculiar issue w.r.t redirecting the command output to a file when using loop.
I am redirecting command output to same file in a series of if condition statements, but if one block of if condition statement writes the log to the file , the subsequent block of if condition... (7 Replies)
Discussion started by: ananan
7 Replies
LEARN ABOUT DEBIAN
sort
SORT(1) User Commands SORT(1)NAME
sort - sort lines of text files
SYNOPSIS
sort [OPTION]... [FILE]...
sort [OPTION]... --files0-from=F
DESCRIPTION
Write sorted concatenation of all FILE(s) to standard output.
Mandatory arguments to long options are mandatory for short options too. Ordering options:
-b, --ignore-leading-blanks
ignore leading blanks
-d, --dictionary-order
consider only blanks and alphanumeric characters
-f, --ignore-case
fold lower case to upper case characters
-g, --general-numeric-sort
compare according to general numerical value
-i, --ignore-nonprinting
consider only printable characters
-M, --month-sort
compare (unknown) < `JAN' < ... < `DEC'
-h, --human-numeric-sort
compare human readable numbers (e.g., 2K 1G)
-n, --numeric-sort
compare according to string numerical value
-R, --random-sort
sort by random hash of keys
--random-source=FILE
get random bytes from FILE
-r, --reverse
reverse the result of comparisons
--sort=WORD
sort according to WORD: general-numeric -g, human-numeric -h, month -M, numeric -n, random -R, version -V
-V, --version-sort
natural sort of (version) numbers within text
Other options:
--batch-size=NMERGE
merge at most NMERGE inputs at once; for more use temp files
-c, --check, --check=diagnose-first
check for sorted input; do not sort
-C, --check=quiet, --check=silent
like -c, but do not report first bad line
--compress-program=PROG
compress temporaries with PROG; decompress them with PROG -d
--debug
annotate the part of the line used to sort, and warn about questionable usage to stderr
--files0-from=F
read input from the files specified by NUL-terminated names in file F; If F is - then read names from standard input
-k, --key=POS1[,POS2]
start a key at POS1 (origin 1), end it at POS2 (default end of line). See POS syntax below
-m, --merge
merge already sorted files; do not sort
-o, --output=FILE
write result to FILE instead of standard output
-s, --stable
stabilize sort by disabling last-resort comparison
-S, --buffer-size=SIZE
use SIZE for main memory buffer
-t, --field-separator=SEP
use SEP instead of non-blank to blank transition
-T, --temporary-directory=DIR
use DIR for temporaries, not $TMPDIR or /tmp; multiple options specify multiple directories
--parallel=N
change the number of sorts run concurrently to N
-u, --unique
with -c, check for strict ordering; without -c, output only the first of an equal run
-z, --zero-terminated
end lines with 0 byte, not newline
--help display this help and exit
--version
output version information and exit
POS is F[.C][OPTS], where F is the field number and C the character position in the field; both are origin 1. If neither -t nor -b is in
effect, characters in a field are counted from the beginning of the preceding whitespace. OPTS is one or more single-letter ordering
options, which override global ordering options for that key. If no key is given, use the entire line as the key.
SIZE may be followed by the following multiplicative suffixes: % 1% of memory, b 1, K 1024 (default), and so on for M, G, T, P, E, Z, Y.
With no FILE, or when FILE is -, read standard input.
*** WARNING *** The locale specified by the environment affects sort order. Set LC_ALL=C to get the traditional sort order that uses
native byte values.
AUTHOR
Written by Mike Haertel and Paul Eggert.
REPORTING BUGS
Report sort bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report sort translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for sort is maintained as a Texinfo manual. If the info and sort programs are properly installed at your site, the
command
info coreutils 'sort invocation'
should give you access to the complete manual.
GNU coreutils 8.12.197-032bb September 2011 SORT(1)