Hello All,
I just wanted to know what are the different ways of using commands in combination.
The most common one which i know is using pipes.
Also grouping is also done like ( ls; date) where output of both the commands is displayed.
Are there any other ways of combining various... (2 Replies)
Hi,
I have this following script below. Its searching a log file for 2 string and if found then write the strings to success.txt and If not found write strings to failed.txt . if one found and not other...then write found to success.txt and not found to failed.txt.
I want to optimize this... (3 Replies)
I want to show a output like this
Lee Ballancore
PID TTY TIME CMD
31799 pts/3 00:00:00 vim
31866 pts/3 00:00:00 vim
2495 pts/7 00:00:00 vim
8368 pts/0 00:00:00 vim
9544 pts/2 00:00:00 ps
Alistairr Rutherford
PID TTY TIME CMD
8368 pts/0 00:00:00 vim
9544 pts/2 00:00:00 ps
... (3 Replies)
can we optimize this command ?
sed 's#AAAA##g' /study/i.txt | sed '1,2d' | tr -d '\n\' > /study/i1.txt;
as here i am using two files ...its overhead..can we optimise to use only 1 file
sed 's#AAAA##g' /study/i.txt | sed '1,2d' | tr -d '\n\' > /study/i.txt;
keeping them same but it... (9 Replies)
Hi,
I am cutting data from a fixed length test file and then writing out a new record using the echo command, the problem I have is how to stop multiple spaces from being written to the output file as a single space.
Example:
cat filea | while read line
do
field1=`echo $line | cut -c1-2`
... (6 Replies)
Hi,
I have to assign a value for a varaiable based on a Input. I have written the below code:
if
then
nf=65
elif
then
nf=46
elif
then
nf=164
elif
then
nf=545
elif
then
nf=56
elif
then (3 Replies)
Hi guys,
I feel a bit comfortable now doing bash scripting but I am worried that the way I do it is not optimized and I can do much better as to how I code.
e.g.
I have a whole line in a file from which I want to extract some values.
Right now what I am doing is :
STATE=`cat... (5 Replies)
Hi All,
I have written a new script to check for DB space and size of dump log file before it can be imported into a Oracle DB.
I'm relatively new to shell scripting.
Please help me optimize this script further. (0 Replies)
Hi All,
I have 2 pipe delimited files viz., file_old and file_new. I'm trying to compare these 2 files, and extract all the different rows between them into a new_file.
comm -3 < sort file_old < sort file_new > new_file
I am getting the below error:
-ksh: sort: cannot open
But if I do... (7 Replies)
Two numerical lines, found by either header line, need to be added
and the total placed in a new-header section. Also the total should
should be rounded or cut to a two decimal anynumber.XX format
with the AB string added on the end.
For example: The numerical lines from headers 2 and 3 are... (3 Replies)