Need to print file contents from line number A to line-number B
eg:
Code:
# cat -n a
1 aaaaaaaaaaaaa
2 bbbbbbbbbbbbb
3 ccccccccccccc
4 ddddddddddddd
5 eeeeeeeeeeeee
6 ffffffffffffff
7 gggggggggggg
## Need to print contents from linenum 3-6 only it may be big file of 20MB
## I know to tail from line number
# tail -n+3 a --> But ther's no option for to line number ..
Hi all,
I need to know what command/s I can use to print lines from a file. I cannot do pattern matching, so grepping for a string is not possible. I'd like to say "print line 3" etc. Any ideas? Ta. (2 Replies)
I have a file where each line is a stream of text as follows,
table1, select * from table1
table2, select * from table2
How do i loop through the file line by line? I have tried doing the following
for line in `cat file.txt`
do
echo $line
done
and ...
cat file.txt|while read line... (2 Replies)
Hi friends
I need to get what ever line number i want
Supplier.profile
-----------------
SFTP/INVTRAN
SFTP/INVSNAP
GATEWAY/INVTRAN
GATEWAY/INVSNAP
----------------
exec 0<$Supplier.profile
while read LINE
do
echo $LINE (1 Reply)
I need to print ist and last line of a file
My file having
abc
def
dfg
jkl
bnm
outout will be
abc
bnm
---------- Post updated at 11:24 PM ---------- Previous update was at 11:16 PM ----------
pls help me out. Can any one do this. (5 Replies)
I have a list of words, one word per line, LIST1.TXT that I want to check for in another file, PARAGRAPHS.TXT. If the line from LIST1.TXT is NOT in PARAGRAPHS.TXT I want to print it to screen. The keyword here is NOT. If the word from LIST1.TXT is NOT in the file PARAGRAPHS.TXT, then I want to... (7 Replies)
I have a .csv file which is seperated with (;)
inputfile
---------
ZZZZ;AAAA;BBB;CCCC;DDD;EEE;
YYYY;BBBB;CCC;DDDD;EEE;FFF;
...
...
reading file line by line till end of file.
while reading each line output format should be .
i need to print only specific columns let say 5th... (2 Replies)
Hi Experts,
I am very new to scripting and have a prb since few days and it is urgent to solve so much appreciated if u help me.
i have 2 files
file1.txt
9647810043118
9647810043126
9647810043155
9647810043161
9647810043166
9647810043185
9647810043200
9647810043203
9647810043250... (22 Replies)
example of problem:
when I echo "$e" >> /home/cogiz/file.txt
result prints to file as:AA
BB
CC
I need it to save to file as this:AA BB CC
I know it's probably something really simple but any help would be greatly appreciated.
Thank You.
Cogiz (7 Replies)
Hi All,
i want to write a shell script read below file line by line and want to exclude the lines which contains empty value for MOUNTPOINT field.
i am using centos 7 Operating system.
want to read below file.
# cat /tmp/d5
NAME="/dev/sda" TYPE="disk" SIZE="60G" OWNER="root"... (4 Replies)
Discussion started by: balu1234
4 Replies
LEARN ABOUT DEBIAN
logtop
LOGTOP(1) General Commands Manual LOGTOP(1)NAME
logtop - Realtime log line rate analyser
SYNOPSIS
logtop [OPTIONS]
DESCRIPTION
logtop is a System Administrator tool analyzing line rate on stdin.
It reads on stdin and print a constantly updated result
displaying, in columns:
Line number, count, frequency, and the actual line.
$ tail -f FILE | logtop
is the friendly version of:
$ watch 'tail FILE | sort | uniq -c | sort -gr'
OPTIONS -s, --size=K
Only keep K lines in memory, instead of 10000.
-q, --quiet
Do not display a live view of the data, only display a top at exit.
-l, --line-by-line=K
Print result line by line, in a machine friendly format, K is the number of result to print per line.
Line by line format is : [%d %f %s ]*
%d : Number of occurences
%f : Frequency of apparition
%s : String (Control chars replaced by dots.
-i, --interval=K
Interval between graphical updates, in seconds. Defaults to 1.
-h, --help
Show summary of options.
-v, --version
Show version of program.
EXAMPLES
Here are some logtop usage examples.
tail -f cache.log | grep -o "HIT|MISS" | logtop
Realtime hit / miss ratio on some caching software log file.
tail -f access.log | cut -d' ' -f1 | logtop -s 10000
Realtime most querying IPs on your server, as long as log lines in access.log starts with the client IP.
tail -f access.log | cut -d' ' -f7 | logtop -s 10000
Realtime most requested web pages in a NCSA like log file.
cat auth.log | grep -v "CRON" | grep -o ": .*" | logtop -q -s 100000
Display a one-shot simple analyse of your auth.log.
SEE ALSO watch(1)AUTHOR
logtop was written by Julien Palard.
This manual page was written by Julien Palard <julien@palard.fr>, for the Debian project (and may be used by others).
April 16, 2011 LOGTOP(1)