07-13-2007
sort / cut question
Hi All,
I have a small problem, hope you can help me out here.
I have a file that contains the same format of lines in 99% of the cases.
906516 XYZ.NNN V 0000 20070711164648 userID1 userID2 hostname 20070711164641
There are unfortunately several lines with these format:
906516 XYZ V 0000 20070711164647 userID1 userID2 hostname 20070711164641
The difference is in the 2nd coloumn. Sometimes its length is 3 , sometimes 7 digits long. Thus the number of delimiters between 2nd and 3rd column are also varied. Imagine the two lines as "V" in coloumn 3 would be in the same line...
My scenario is:
cut out the 1st(the number) and 5th (timestamp) coloumn and sort the result in reverse order using the timestamp column as key.
My command is:
cat filename |cut -f 1,15 -d " " |sort -r -k 2,2
Obviously this cannot work properly because sometimes the 5th column does not start at the 15th " " delimiter due the above mentioned reasons.
Could you guys let me know a solution I can carry out this scenario? I checked man for cut but could not find an option of using sophisticated delimiters, etc...
Thanks a lot!
BearCheese
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LEARN ABOUT XFREE86
printf
PRINTF(1) User Commands PRINTF(1)
NAME
printf - format and print data
SYNOPSIS
printf FORMAT [ARGUMENT]...
printf OPTION
DESCRIPTION
Print ARGUMENT(s) according to FORMAT, or execute according to OPTION:
--help display this help and exit
--version
output version information and exit
FORMAT controls the output as in C printf. Interpreted sequences are:
" double quote
\ backslash
a alert (BEL)
backspace
c produce no further output
e escape
f form feed
new line
carriage return
horizontal tab
v vertical tab
NNN byte with octal value NNN (1 to 3 digits)
xHH byte with hexadecimal value HH (1 to 2 digits)
uHHHH Unicode (ISO/IEC 10646) character with hex value HHHH (4 digits)
UHHHHHHHH
Unicode character with hex value HHHHHHHH (8 digits)
%% a single %
%b ARGUMENT as a string with '' escapes interpreted, except that octal escapes are of the form or NNN
%q ARGUMENT is printed in a format that can be reused as shell input, escaping non-printable characters with the proposed POSIX $''
syntax.
and all C format specifications ending with one of diouxXfeEgGcs, with ARGUMENTs converted to proper type first. Variable widths are han-
dled.
NOTE: your shell may have its own version of printf, which usually supersedes the version described here. Please refer to your shell's
documentation for details about the options it supports.
AUTHOR
Written by David MacKenzie.
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SEE ALSO
printf(3)
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or available locally via: info '(coreutils) printf invocation'
GNU coreutils 8.28 January 2018 PRINTF(1)