I grepped for a string from a directory of very large files. This took quite a long time (not a problem). When I grepped for a different string from the same files immediately after, the output was MUCH quicker.
My question is, does anybody know why the second grep was so much quicker than the... (1 Reply)
Hello,
I have a Supermicro server with a P4SCI mother board running Debian Sarge 3.1. This is the "dmidecode" output related to RAM info:
RAM speed information is incomplete.. "Current Speed: Unknown", is there anyway/soft to get the speed of installed RAM modules? thanks!!
Regards :)... (0 Replies)
I am doing "ps -f" to see my process.
but I get lines that one of it represents the ps command itself.
I want to grep it out using -v flag, but than I get another process that belongs to the GREP itself :
I would like to exclude
# ps -f
UID PID PPID C STIME TTY TIME CMD... (2 Replies)
Hello
Ive written 2 programs in shell and I need to compare their speed (Compile) against one another.
what methods could I go about doing this?
Is there a feature in shell do accommodate this? (2 Replies)
i want to search in the current directory all the files that contain one word for example "hello"
i want to achieve it with the grep command but not with the grep * (2 Replies)
I analysed disk performance with blktrace and get some data:
read:
8,3 4 2141 2.882115217 3342 Q R 195732187 + 32
8,3 4 2142 2.882116411 3342 G R 195732187 + 32
8,3 4 2144 2.882117647 3342 I R 195732187 + 32
8,3 4 2145 ... (1 Reply)
hi
i'm greping the files with sepefic keyword, where the file is of too big. Assume there are 10 days log file each of more than 200mb. i've to grep all those files with a specific keywords.
for example,
1. i'll grep for error message
2. after the i'll do one more grep for keyword... (4 Replies)
Hi,
I have to grep string from 20 - 30 files each carries 200 - 300 MB size and append to the
file. How to speed the
grepping time.
cat catalina.out_2012_01_01 | grep "xxxxx" >> backup.txt
PLZ, Suggest me,
Regards,
Nanthagopal A (5 Replies)
Hi,
file1.txt
AAA
BBB
CCC
DDD
file2.txt
abc|AAA|AAAabcbcs|fnwufnq
bca|nwruqf|AAA|fwfwwefwef
fmimwe|BBB|fnqwufw|wufbqw
wcdbi|CCC|wefnwin|wfwwf
DDD|wabvfav|wqef|fwbwqfwfe
i need the count of rows of file1.txt present in the file2.txt
required output:
AAA 2 (10 Replies)
Hello,
I am running below command as root user
#nodetool cfstats tests | grep "Memtable switch count"
Memtable switch count: 12
Where as when I try to run same command as another user it gives different result.
#su -l zabbix -s /bin/bash -c "nodetool cfstats tests | grep "Memtable switch... (10 Replies)
Discussion started by: Pushpraj
10 Replies
LEARN ABOUT V7
find
FIND(1) General Commands Manual FIND(1)NAME
find - find files
SYNOPSIS
find pathname-list expression
DESCRIPTION
Find recursively descends the directory hierarchy for each pathname in the pathname-list (i.e., one or more pathnames) seeking files that
match a boolean expression written in the primaries given below. In the descriptions, the argument n is used as a decimal integer where +n
means more than n, -n means less than n and n means exactly n.
-name filename
True if the filename argument matches the current file name. Normal Shell argument syntax may be used if escaped (watch out for
`[', `?' and `*').
-perm onum
True if the file permission flags exactly match the octal number onum (see chmod(1)). If onum is prefixed by a minus sign, more
flag bits (017777, see stat(2)) become significant and the flags are compared: (flags&onum)==onum.
-type c True if the type of the file is c, where c is b, c, d or f for block special file, character special file, directory or plain
file.
-links n True if the file has n links.
-user uname
True if the file belongs to the user uname (login name or numeric user ID).
-group gname
True if the file belongs to group gname (group name or numeric group ID).
-size n True if the file is n blocks long (512 bytes per block).
-inum n True if the file has inode number n.
-atime n True if the file has been accessed in n days.
-mtime n True if the file has been modified in n days.
-exec command
True if the executed command returns a zero value as exit status. The end of the command must be punctuated by an escaped semi-
colon. A command argument `{}' is replaced by the current pathname.
-ok command
Like -exec except that the generated command is written on the standard output, then the standard input is read and the command
executed only upon response y.
-print Always true; causes the current pathname to be printed.
-newer file
True if the current file has been modified more recently than the argument file.
The primaries may be combined using the following operators (in order of decreasing precedence):
1) A parenthesized group of primaries and operators (parentheses are special to the Shell and must be escaped).
2) The negation of a primary (`!' is the unary not operator).
3) Concatenation of primaries (the and operation is implied by the juxtaposition of two primaries).
4) Alternation of primaries (`-o' is the or operator).
EXAMPLE
To remove all files named `a.out' or `*.o' that have not been accessed for a week:
find / ( -name a.out -o -name '*.o' ) -atime +7 -exec rm {} ;
FILES
/etc/passwd
/etc/group
SEE ALSO sh(1), test(1), filsys(5)BUGS
The syntax is painful.
FIND(1)