There are several problems with doing this via ls. The first is that ls switches formats for old files add shows just the year. All we can do if a case like that is guess as to time. And if it is showing the time, you can just assume the year is the current year because files dated late last year will not have switched formats to show the year. And Solaris adds a problem in that it allows long user names and group names but if you them, the fields in ls overflow and run together.
Here is a script that does the best that can be done under the circumstances:
HI,
I have some files in my Linux machine that are very old and occupy a HUGe amount of space. I am trying to delete these files from the system so that it will be easy for me to add some files. I would like to know if this can done through a Perl or a shell script.
What i want to do is i... (6 Replies)
I am currently running the following Korn shell script which works fine:
#!/usr/bin/ksh
count=`db2 -x "select count(*) from schema.tablename"`
echo "count"
I would like to add a "where" clause to the 2nd line that would allow me to get a record count of all the records from schema.tablename... (9 Replies)
Hello - I have written the following basic shell script to count files, compare files and look for a particular strings in a file.
Problem 1: How do I define more than 1 file location?
#!/bin/bash
#this is a test script
FILES=$(ls /home/student/bin/dir1, home/student/bin/dir2)... (0 Replies)
i have two files with identical no of columns. 6th columns is date (MM/DD/YY format) and 7th columns is time (HH:MM:SS) format. I need to compare these two vaules and if the date & time is higher than fileA, save it on fileC; if the value is lower, then save it on fileD
CONDITIONS... (7 Replies)
In KSH, I am pasting 2 almost identical files together and each one has a date and time on each line. I need to determine if the first instance of the date/time is greater than the 2nd instance of the date/time. If the first instance is greater, I just need to echo that line.
I thought I would... (4 Replies)
Hi! I am trying to read a file and every line has a specific date as one of its fields.
I want to take that date and compare it to the date today plus 6 days.
while read line
do
date=substr($line, $datepos, 8) #date is expected to be YYYYMMDD
if ; then
...proceed commands
... (1 Reply)
Hi, What will be the best way to connect (ssh) to hundreds of nodes and grep log files parallely from shell. Using for loop seems to be sequential. Are there any shell built in construct which could be used to achieve this? Is the sub shell any good here? (1 Reply)
hi all,
How to compare two files whether they are same are not...? like i had my input files as 20141201_file.txt and 20141130_file2.txt
how to compare the above files based on date .. like todays file and yesterdays file...? (4 Replies)
I get the date that's inside a text file and assigned it to a variable. When I grep the date from the file, I get this,
Not After : Jul 28 14:09:57 2017 GMT
So I only crop out the date, with this command
echo $dateFile | cut -d ':' -f 2,4The result would be
Jul 28 14:57 2017 GMT
How do I... (3 Replies)
Hi Community!
Following on from this code in another thread:
#!/bin/bash
file_string=`/bin/cat date.txt | /usr/bin/awk '{print $5,$4,$7,$6,$8}'`
file_date=`/bin/date -d "$file_string"`
file_epoch=`/bin/date -d "$file_string" +%s`
now_epoch=`/bin/date +%s`
if
then
#let... (2 Replies)
Discussion started by: Greenage
2 Replies
LEARN ABOUT XFREE86
test
TEST(1) User Commands TEST(1)NAME
test - check file types and compare values
SYNOPSIS
test EXPRESSION
test
[ EXPRESSION ]
[ ]
[ OPTION
DESCRIPTION
Exit with the status determined by EXPRESSION.
--help display this help and exit
--version
output version information and exit
An omitted EXPRESSION defaults to false. Otherwise, EXPRESSION is true or false and sets exit status. It is one of:
( EXPRESSION )
EXPRESSION is true
! EXPRESSION
EXPRESSION is false
EXPRESSION1 -a EXPRESSION2
both EXPRESSION1 and EXPRESSION2 are true
EXPRESSION1 -o EXPRESSION2
either EXPRESSION1 or EXPRESSION2 is true
-n STRING
the length of STRING is nonzero
STRING equivalent to -n STRING
-z STRING
the length of STRING is zero
STRING1 = STRING2
the strings are equal
STRING1 != STRING2
the strings are not equal
INTEGER1 -eq INTEGER2
INTEGER1 is equal to INTEGER2
INTEGER1 -ge INTEGER2
INTEGER1 is greater than or equal to INTEGER2
INTEGER1 -gt INTEGER2
INTEGER1 is greater than INTEGER2
INTEGER1 -le INTEGER2
INTEGER1 is less than or equal to INTEGER2
INTEGER1 -lt INTEGER2
INTEGER1 is less than INTEGER2
INTEGER1 -ne INTEGER2
INTEGER1 is not equal to INTEGER2
FILE1 -ef FILE2
FILE1 and FILE2 have the same device and inode numbers
FILE1 -nt FILE2
FILE1 is newer (modification date) than FILE2
FILE1 -ot FILE2
FILE1 is older than FILE2
-b FILE
FILE exists and is block special
-c FILE
FILE exists and is character special
-d FILE
FILE exists and is a directory
-e FILE
FILE exists
-f FILE
FILE exists and is a regular file
-g FILE
FILE exists and is set-group-ID
-G FILE
FILE exists and is owned by the effective group ID
-h FILE
FILE exists and is a symbolic link (same as -L)
-k FILE
FILE exists and has its sticky bit set
-L FILE
FILE exists and is a symbolic link (same as -h)
-O FILE
FILE exists and is owned by the effective user ID
-p FILE
FILE exists and is a named pipe
-r FILE
FILE exists and read permission is granted
-s FILE
FILE exists and has a size greater than zero
-S FILE
FILE exists and is a socket
-t FD file descriptor FD is opened on a terminal
-u FILE
FILE exists and its set-user-ID bit is set
-w FILE
FILE exists and write permission is granted
-x FILE
FILE exists and execute (or search) permission is granted
Except for -h and -L, all FILE-related tests dereference symbolic links. Beware that parentheses need to be escaped (e.g., by backslashes)
for shells. INTEGER may also be -l STRING, which evaluates to the length of STRING.
NOTE: Binary -a and -o are inherently ambiguous. Use 'test EXPR1 && test EXPR2' or 'test EXPR1 || test EXPR2' instead.
NOTE: [ honors the --help and --version options, but test does not. test treats each of those as it treats any other nonempty STRING.
NOTE: your shell may have its own version of test and/or [, which usually supersedes the version described here. Please refer to your
shell's documentation for details about the options it supports.
AUTHOR
Written by Kevin Braunsdorf and Matthew Bradburn.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report [ translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 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
Full documentation at: <http://www.gnu.org/software/coreutils/[>
or available locally via: info '(coreutils) test invocation'
GNU coreutils 8.28 January 2018 TEST(1)