Sponsored Content
Top Forums Shell Programming and Scripting Infinite "while" loop subshell loses current date variable Post 302944491 by Corona688 on Tuesday 19th of May 2015 03:59:33 PM
Old 05-19-2015
To execute a command, put it in $( ). You can embed this inside "" quotes like a variable.

i.e.

Code:
echo "$(date +%Y-%m-%d-%H-%M-%S) server down"

I recomend YYYY-MM-DD-HH-MM-SS dates at the beginning of log lines, because they sort and compare so nicely. You'll be able to check if a line is >= "2014-10-10-12-00-00" just with ordinary alphanumeric comparison, etc.
This User Gave Thanks to Corona688 For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

"find command" to find the files in the current directories but not in the "subdir"

Dear friends, please tell me how to find the files which are existing in the current directory, but it sholud not search in the sub directories.. it is like this, current directory contains file1, file2, file3, dir1, dir2 and dir1 conatins file4, file5 and dir2 contains file6,... (9 Replies)
Discussion started by: swamymns
9 Replies

2. UNIX for Advanced & Expert Users

add seconds to: date"|"time"|"HHMMSS

Hey all, I have a shell that invokes a AWK. In this AWK i want invoke a function that receives 3 parameters: date: 20080831 time: 235901 duration: 00023 that function receive this 3 parameters and sum to this value two more seconds: 2008083123590100025 Remember that in case that... (3 Replies)
Discussion started by: anaconga
3 Replies

3. Linux

"YPBINDPROC_DOMAIN: Domain not bound" in infinite loop

After configuring NIS client & server when I restart my system there is a message "YPBINDPROC_DOMAIN: Domain not bound" which falls in infinite loop, although I stopped ypbind service. Please help me in this regard as I have to install all from start. (1 Reply)
Discussion started by: yajneshilu
1 Replies

4. Shell Programming and Scripting

How to create a dir with name "current date".

I need to create a dir in my script with its name as current date in the server. how can i do that please help. (2 Replies)
Discussion started by: abhishek27
2 Replies

5. AIX

xx=`date +"%a %b %d"`;rsh xxx grep "^$XX" zzz ?

AIX 4.2 I am trying to do an rsh grep to search for date records inside server logs by doing this : xx=`date +"%a %b %d"` rsh xxx grep "^$XX" zzz gives : grep: 0652-033 Cannot open Jun. grep: 0652-033 Cannot open 11. But if I do : xx=`date +"%a %b %d"` grep "^$XX" zzz it works... (2 Replies)
Discussion started by: Browser_ice
2 Replies

6. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

7. Shell Programming and Scripting

"find . -printf" without prepended "." path? Getting path to current working directory?

If I enter (simplified): find . -printf "%p\n" then all files in the output are prepended by a "." like ./local/share/test23.log How can achieve that a.) the leading "./" is omitted and/or b.) the full path to the current directory is inserted (enclosed by brackets and a blank)... (1 Reply)
Discussion started by: pstein
1 Replies

8. Shell Programming and Scripting

How to increment date using "for loop" in format MMDDYY inside the shell script?

Need to increment the date from "currentdate + 90days" inside the for loop (i=1 to i=50) (5 Replies)
Discussion started by: aroragaurav.84
5 Replies

9. Shell Programming and Scripting

awk "date" and "system" command

Hello experts! I need your help please I have a file.txt of which I want to extract 3rd and 4th columns with date with the form e.g.: 2016-11-25 03:14:50and pass them to "date" command, but also append the 9th column in a file as well. So I want to execute date -d '2016-11-25 03:14:50' ... (2 Replies)
Discussion started by: phaethon
2 Replies

10. Shell Programming and Scripting

awk variable into shell command "date -d": possible...?

Hello, there! I am trying to pass an awk variable into a shell command in order to collect the result into an awk variable; in Bash it does work, as in: v='2'; date -d "now + $v weeks" But in awk it does not, as in: v="2" "date -d 'now + v weeks'" | getline newdate close ("date -d 'now... (3 Replies)
Discussion started by: fbird3
3 Replies
SORT(1) 							   User Commands							   SORT(1)

NAME
sort - sort lines of text files SYNOPSIS
sort [OPTION]... [FILE]... DESCRIPTION
Write sorted concatenation of all FILE(s) to standard output. Ordering options: Mandatory arguments to long options are mandatory for short options too. -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' -n, --numeric-sort compare according to string numerical value -r, --reverse reverse the result of comparisons Other options: -c, --check check whether input is sorted; do not sort -k, --key=POS1[,POS2] start a key at POS1, end it at POS 2 (origin 1) -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- to whitespace transition -T, --temporary-directory=DIR use DIR for temporaries, not $TMPDIR or /tmp multiple options specify multiple directories -u, --unique with -c: check for strict ordering otherwise: 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. 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 bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. 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 sort should give you access to the complete manual. sort (coreutils) 4.5.3 October 2002 SORT(1)
All times are GMT -4. The time now is 05:48 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy