05-10-2015
Wrong subforum... Please watch out where to post your problems!
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Sorry if this has been posted before, I searched but not sure what I really want to do.
I have a file with records that show who has logged into my application:
2003-03-14:I:root: Log_mesg: registered servername:userid. (more after this)
I want to pull out the userid, date and time into... (2 Replies)
Discussion started by: MizzGail
2 Replies
2. Shell Programming and Scripting
Hi all,
I have a flatfile
I would like to get ext = 7950 , how do I do that ?
if ($1 == "CTI-ProgramStart") {
ext = substr($9,index($9,"Extension")+11,4);
But why it is not working ???? Please help .
Thanks (1 Reply)
Discussion started by: sabercats
1 Replies
3. UNIX for Dummies Questions & Answers
i have a variable 200612
the last two digits of this variable should be between 1 and 12, it should not be greater than 12 or less than 1 (for ex: 00 or 13,14,15 is not accepted)
how do i check for this conditions in a unix shell script.
thanks
Ram (3 Replies)
Discussion started by: ramky79
3 Replies
4. Shell Programming and Scripting
Hi
I have multiple files that name begins bidb_yyyymm. (yyyymm = current year month of file creation).
What I want to do is look at the files and where yyyymm is older than 1 month I want to remove the file from the server.
I was looking at looping through the files and getting the yyyymm... (2 Replies)
Discussion started by: colesga
2 Replies
5. UNIX for Dummies Questions & Answers
I have a variable '$test' that has the following string value:
$test = 123|456|789|0123
How would I select just the first element ('123') using awk.
Note: '|' is the delimiter, and the length of each field can vary.
Thanks,
- CB (3 Replies)
Discussion started by: ChicagoBlues
3 Replies
6. Shell Programming and Scripting
I have the following to find lines matching "COMPLETE" and extract parts of it using substr.
sed -n "/COMPLETE/p" 1.txt | awk 'BEGIN { FS = "\" } {printf"%s %s:%s \n", substr($3,17,3),substr($6,4,1), substr($7,4,1)}' | sort | uniq > temp.txt
Worked fine until the numbers in 2nd & 3rd substr... (5 Replies)
Discussion started by: zpn
5 Replies
7. Shell Programming and Scripting
HI I am using awk and substr function to list out the directory names in the present working directory .
I am using below code
ls -l | awk '{ if ((substr($1,1,1)) -eq d) {print $9 }}'
But the problem is i am getting all the files and directories listed where as the requirement i wrote... (7 Replies)
Discussion started by: prabhu_kumar
7 Replies
8. Shell Programming and Scripting
Hi to all,
I'm here again, cause I need your help to solve another issue for me.
I have some files that have this name format: date_filename.csv
In my shell I must rename each file removing the date so that the file name is filename.csv
To do this I use this command:
fnames=`ls ${fname}|... (2 Replies)
Discussion started by: leobdj
2 Replies
9. Shell Programming and Scripting
Hello life savers!!
Is there any way to use substr in awk command for returning one part of a string from declared start and stop point?
I mean I know we have this:
substr(string, start, length)
Do we have anything like possible to use in awk ? :
substr(string, start, stop)
... (9 Replies)
Discussion started by: @man
9 Replies
10. Shell Programming and Scripting
Hello All;
I have an input file 'abc.txt' with below text:
512345977,213458,100021
512345978,213454,100031
512345979,213452,100051
512345980,213455,100061
512345981,213456,100071
512345982,213456,100091
512345983,213457,100041
512345984,213451,100011
I need to paste the first field... (10 Replies)
Discussion started by: mystition
10 Replies
WATCH(1) Linux User's Manual WATCH(1)
NAME
watch - execute a program periodically, showing output fullscreen
SYNOPSIS
watch [-dhvt] [-n <seconds>] [--differences[=cumulative]] [--help] [--interval=<seconds>] [--no-title] [--version] <command>
DESCRIPTION
watch runs command repeatedly, displaying its output (the first screenfull). This allows you to watch the program output change over time.
By default, the program is run every 2 seconds; use -n or --interval to specify a different interval.
The -d or --differences flag will highlight the differences between successive updates. The --cumulative option makes highlighting
"sticky", presenting a running display of all positions that have ever changed. The -t or --no-title option turns off the header showing
the interval, command, and current time at the top of the display, as well as the following blank line.
watch will run until interrupted.
NOTE
Note that command is given to "sh -c" which means that you may need to use extra quoting to get the desired effect.
Note that POSIX option processing is used (i.e., option processing stops at the first non-option argument). This means that flags after
command don't get interpreted by watch itself.
EXAMPLES
To watch for mail, you might do
watch -n 60 from
To watch the contents of a directory change, you could use
watch -d ls -l
If you're only interested in files owned by user joe, you might use
watch -d 'ls -l | fgrep joe'
To see the effects of quoting, try these out
watch echo $$
watch echo '$$'
watch echo "'"'$$'"'"
You can watch for your administrator to install the latest kernel with
watch uname -r
(Just kidding.)
BUGS
Upon terminal resize, the screen will not be correctly repainted until the next scheduled update. All --differences highlighting is lost
on that update as well.
Non-printing characters are stripped from program output. Use "cat -v" as part of the command pipeline if you want to see them.
AUTHORS
The original watch was written by Tony Rems <rembo@unisoft.com> in 1991, with mods and corrections by Francois Pinard. It was reworked and
new features added by Mike Coleman <mkc@acm.org> in 1999.
1999 Apr 3 WATCH(1)