Hi,
I have a 5 gig file, no record terminators, field terminators are newline. The record length is 768 and I would like to check that every 768th byte is a newline and print out the byte position if it isn't. I would like to do this going either forward or backwards with one command if... (3 Replies)
Hi,
I am passing date string of format 'YYYYMMDD' to a ksh script.
Will I be able to get next valid date from the passed in string.
Example I pass '20100228' to the shell script, Is there a reverse date command to get '20100301' .i.e to convert '20100228' to date and get next date.... (5 Replies)
File contian below data...
20111101
20111102
20111131
I am new to unix and per scirpt...
First two records are valid and last record is invalid,how to get the valid records...
Please help me unix or perl script.
:wall:
Thanks,
Murali (5 Replies)
Hi All,
I am trying to convert the date of all files under a directory in seconds,
PFB script
a=`ls -lrt | wc -l`
echo $a
for ((i=1;i<=$a;i++))
do
A=`ls -lrt | awk '{print $6,$7,$8}' | head -$i | tail -1`
echo ${A}
date -d '${A}' +%s
donebut I am getting error
date: invalid date... (1 Reply)
Hi All,
I am a newbie...I would like to have a function which ll check if a file contains valid strings before "=" operator. Just to give you my requirement:
assume my file has content:
hello= gsdgsd sfdsg sgdsg sgdgdg
world= gggg hhhh iiiii
xxxx= pppp ppppp pppp
my... (5 Replies)
My question is how would i loop a read command to keep asking the user for input and eventually print the no. of valid invalid inputs after a specified control input typed i.e. (-3). (1 Reply)
Hi, I have a function to calculate "yesterday" in format YYYYMMDD:
desa_ev9 # date +"%Y%m%d" --date "-1 day 20180701"
20180630
desa_ev9 # date +"%Y%m%d" --date "-1 day 20180720"
20180719
desa_ev9 # date +"%Y%m%d" --date "-1 day 20190101"
20181231
desa_ev9 # date +"%Y%m%d" --date "-1... (2 Replies)
i try to set linux date & time in specific format but it keep giving me error
Example :
date "+%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01"
or
date +"%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01"
keep giving me this error :
date: invalid date ‘19-01-2017 00:05:01'
Please use CODE tags... (7 Replies)
Hello.
I can use any particular (stupid or not) format when using bash date command.
Example :
~> date --date "now" '+%Y-%m-%d %H!%M!%S'
2019-06-03 12!55!33or
~> date --date "now" '+%Y£%m£%d %H¤%M¤%S'
2019£06£03 12¤57¤36
or
~> date --date "now" '+%Y-%m-%d %H-%M-%S'
2019-06-03 12-58-51
... (4 Replies)
Discussion started by: jcdole
4 Replies
LEARN ABOUT PLAN9
ctime
CTIME(2) System Calls Manual CTIME(2)NAME
ctime, localtime, gmtime, asctime, timezone - convert date and time to ASCII
SYNOPSIS
#include <u.h>
#include <libc.h>
char* ctime(long clock)
Tm* localtime(long clock)
Tm* gmtime(long clock)
char* asctime(Tm *tm)
/env/timezone
DESCRIPTION
Ctime converts a time clock such as returned by time(2) into ASCII (sic) and returns a pointer to a 30-byte string in the following form.
All the fields have constant width.
Wed Aug 5 01:07:47 EST 1973
Localtime and gmtime return pointers to structures containing the broken-down time. Localtime corrects for the time zone and possible day-
light savings time; gmtime converts directly to GMT. Asctime converts a broken-down time to ASCII and returns a pointer to a 30-byte
string.
typedef
struct {
int sec; /* seconds (range 0..59) */
int min; /* minutes (0..59) */
int hour; /* hours (0..23) */
int mday; /* day of the month (1..31) */
int mon; /* month of the year (0..11) */
int year; /* year A.D. - 1900 */
int wday; /* day of week (0..6, Sunday = 0) */
int yday; /* day of year (0..365) */
char zone[4]; /* time zone name */
} Tm;
When local time is first requested, the program consults the timezone environment variable to determine the time zone and converts accord-
ingly. (This variable is set at system boot time by init(8).) The timezone variable contains the normal time zone name and its difference
from GMT in seconds followed by an alternate (daylight) time zone name and its difference followed by a newline. The remainder is a list
of pairs of times (seconds past the start of 1970, in the first time zone) when the alternate time zone applies. For example:
EST -18000 EDT -14400
9943200 25664400 41392800 57718800 ...
Greenwich Mean Time is represented by
GMT 0
SOURCE
/sys/src/libc/9sys
SEE ALSO date(1), time(2), init(8)BUGS
The return values point to static data whose content is overwritten by each call.
Daylight Savings Time is ``normal'' in the Southern hemisphere.
These routines are not equipped to handle non-ASCII text, and are provincial anyway.
CTIME(2)