Hi,
I need to generate a listing of files that have been changed since x day. the listing is to be sorted by date.
I managed to get the 1st requirement using the find command :
find . -mtime -100 -type f -ls
but I don't know how to sort the ls listing by date. :(
The challenge comes... (4 Replies)
Hello everyone. I am new to these forums and also new to Unix. And by saying "new to Unix" I mean I have never used it and 10 minutes ago was asked to start learning. So here I am.
I was wondering if anyone could help me find out how long it would take to write code in Unix that will do the... (1 Reply)
Hi, there are some servers here at work which issue a Safeword challenge after I login. Can anyone tell me exactly how the challenge/response system works? In particular, how are the valid keys decided? (2 Replies)
Here's a challenge for you wizards...
I have a file formatted as follows;
$
What I need to output is;
87654321 Bobby One
12345678 Bobby One
09876543 Bobby One
1107338 Bobby! Two
Any Ideas how I can do this? I've tried sed but I'm not sure if perl might be a better way to... (2 Replies)
Here's a regex substitution operation that has stumped me with sed:
How do you convert lines like this:
first.key ?{x.y.z}
second.key ?{xa.ys.zz.s}
third.key ?{xa.k}
to:
first.key ?{x_y_z}
second.key ?{xa_ys_zz_s}
third.key ?{xa_k}
So i'm basically converting all the... (11 Replies)
Hi everybody, I'm new to these forums and this is my first post. A couple days ago I was trying to find a simple script that would return an individual's local weather conditions using I.P. based geolocation. After many failed search attempts, I began my quest to create this for myself. I have to... (0 Replies)
Ok then i Have a challenge for you :
Give me PS1 so that it always display the least 2 levels of directory
(except if i am above of course)
I want it this way :
so if i go to
/
/home/
/home/user
/home/user/whatever
/home/user/whatever1/whatever2
my PS1 should respectively... (12 Replies)
I've been given a directory full of subdirectories full of logfiles of the same name:
/logfiles/day1/file1/blockednodes.csv
day1-14
file1-48
The above is the actual directory structure for 14 days worth of a logfile that is generated every 30 minutes. It's been done this way to preserve the... (15 Replies)
I have a log with entries like:
out/target/product/imx53_smd/obj/STATIC_LIBRARIES/libwebcore_intermediates/Source/WebCore/bindings/V8HTMLVideoElement.cpp
: target thumb C++: libwebcore <=... (8 Replies)
I have searched through google, and this forum to try and find the answer, but alas, nothing quite hits the whole answer.
I am trying to read the last line (or lines) of some log files. I do this often.
The files are named sequentially, using the date as part of the file name, and appending... (18 Replies)
Discussion started by: BatterBits
18 Replies
LEARN ABOUT PLAN9
grep
GREP(1) General Commands Manual GREP(1)NAME
grep - search a file for a pattern
SYNOPSIS
grep [ option ... ] pattern [ file ... ]
DESCRIPTION
Grep searches the input files (standard input default) for lines (with newlines excluded) that match the pattern, a regular expression as
defined in regexp(6). Normally, each line matching the pattern is `selected', and each selected line is copied to the standard output.
The options are
-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all letters in the pattern and input before interpre-
tation. Matched lines are printed in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
Output lines are tagged by file name when there is more than one input file. (To force this tagging, include /dev/null as a file name
argument.)
Care should be taken when using the shell metacharacters $*[^|()= and newline in pattern; it is safest to enclose the entire expression in
single quotes '...'.
SOURCE
/sys/src/cmd/grep.c
SEE ALSO ed(1), awk(1), sed(1), sam(1), regexp(6)DIAGNOSTICS
Exit status is null if any lines are selected, or non-null when no lines are selected or an error occurs.
GREP(1)