Maybe I did not explain clearly: what I mean "from right to left" is, for example :
Code:
string = "0123456789"
if we want to get "567", we can do by starting from "5", then counting from left to right three digits; we can also do by starting from "7", then counting from right to left three digits.
What is the more efficient way to do this (awk only and default FS) ?
$ echo "jefe@alm"|awk '{pos = index($0, "@");printf ("USER: %s\n",substr ($0,1,pos-1))}'
USER: jefe
Thx in advance (2 Replies)
Hi,
My input file is
41;2;xxxx;yyyyy....
41;2;xxxx;yyyyy....
41;2;xxxx;yyyyy....
..
..
I need to change the second field value from 2 to 1. i.e.,
41;1;xxxx;yyyyy....
41;1;xxxx;yyyyy....
41;1;xxxx;yyyyy....
..
..
Thanks in advance. (9 Replies)
Hi,
I have a long string like,
aabab|bcbcbcbbc|defgh|paswd123 dedededede|efef|ghijklmn|paswd234 ghghghghgh|ijijii|klllkkk|paswd345 lmlmlmmm|nononononn|opopopopp|paswd456
This string is devided into one space between substrings. This substrings are,
aabab|bcbcbcbbc|defgh|paswd123... (6 Replies)
why do inode indices starts from 1 unlike array indexes which starts from 0
its a question from "the design of unix operating system" of maurice j bach
id be glad if i get to know the answer quickly
:) (0 Replies)
brothers why inode index starts from 1 unlike array inex which starts from 0
its a question from the design of unix operating system of maurice j.bach
i need to know the answer urgently...someone help please (1 Reply)
Hi All,
I have a file (FileNames.txt) which contains the following data in it.
$ cat FileNames.txt
MYFILE17XXX208Sep191307.csv
MYFILE19XXX208Sep192124.csv
MYFILE20XXX208Sep192418.csv
MYFILE22XXX208Sep193234.csv
MYFILE21XXX208Sep193018.csv
MYFILE24XXX208Sep194053.csv... (5 Replies)
I would like to extract a digit from $0 starting 2,30 to 3,99 or 2.30 to 3.99
Can somebody fix this?
awk --re-interval '{if($0 ~ /{1}{2}/) {print FILENAME, substr($0,index($0,/{1}{2}/) , 4)}}'input
abcdefg sdlfkj 3,29 g. lasdfj
alsdfjasl 2.86 gr. slkjds sldkd
lskdjfsl sdfkj kdjlksj 3,34 g... (4 Replies)
I have a command like this:
listdb ID923 -l |gawk '{if (substr($0,37,1)==1 && NR == 3)print "YES" else if (substr ($0,37,1)==0 && NR == 3) print "NO"}'
This syntax doesn't work. But I was able to get this to work:
listdb ID923 -l |gawk '{if (substr($0,37,1)==1 && NR == 3)print "YES"}'
... (4 Replies)
awk '/^>/{id=$0;next}length>=7 { print id, "\n"$0}' Test.txt
Can I use substr to achieve the same task?
Thanks! (8 Replies)
Discussion started by: Xterra
8 Replies
LEARN ABOUT FREEBSD
mailq
MAILQ(1) General Commands Manual MAILQ(1)NAME
mailq - print the mail queue
SYNOPSIS
mailq [-Ac] [-q...] [-v]
DESCRIPTION
Mailq prints a summary of the mail messages queued for future delivery.
The first line printed for each message shows the internal identifier used on this host for the message with a possible status character,
the size of the message in bytes, the date and time the message was accepted into the queue, and the envelope sender of the message. The
second line shows the error message that caused this message to be retained in the queue; it will not be present if the message is being
processed for the first time. The status characters are either * to indicate the job is being processed; X to indicate that the load is
too high to process the job; and - to indicate that the job is too young to process. The following lines show message recipients, one per
line.
Mailq is identical to ``sendmail -bp''.
The relevant options are as follows:
-Ac Show the mail submission queue specified in /etc/mail/submit.cf instead of the MTA queue specified in /etc/mail/sendmail.cf.
-qL Show the "lost" items in the mail queue instead of the normal queue items.
-qQ Show the quarantined items in the mail queue instead of the normal queue items.
-q[!]I substr
Limit processed jobs to those containing substr as a substring of the queue id or not when ! is specified.
-q[!]Q substr
Limit processed jobs to quarantined jobs containing substr as a substring of the quarantine reason or not when ! is specified.
-q[!]R substr
Limit processed jobs to those containing substr as a substring of one of the recipients or not when ! is specified.
-q[!]S substr
Limit processed jobs to those containing substr as a substring of the sender or not when ! is specified.
-v Print verbose information. This adds the priority of the message and a single character indicator (``+'' or blank) indicating
whether a warning message has been sent on the first line of the message. Additionally, extra lines may be intermixed with the
recipients indicating the ``controlling user'' information; this shows who will own any programs that are executed on behalf of this
message and the name of the alias this command expanded from, if any. Moreover, status messages for each recipient are printed if
available.
Several sendmail.cf options influence the behavior of the mailq utility: The number of items printed per queue group is restricted by
MaxQueueRunSize if that value is set. The status character * is not printed for some values of QueueSortOrder, e.g., filename, random,
modification, and none, unless a -q option is used to limit the processed jobs.
The mailq utility exits 0 on success, and >0 if an error occurs.
SEE ALSO sendmail(8)HISTORY
The mailq command appeared in 4.0BSD.
$Date: 2013-11-22 20:51:55 $ MAILQ(1)