The following command works as expected...
tail /var/log/mysqld.log | grep `date '+%y%m%d' --date='1 day ago'`
But this does not...
tail /var/log/mysqld.log | grep (`date '+%y%m%d' --date='1 day ago'` | `date '+%y%m%d'`)
I want to return the lines having yesterday OR today.
tail /var/log/mysqld.log | grep -e `date '+%y%m%d' --date='1 day ago'` -e `date '+%y%m%d'`
Related
I am having trouble with command output formatting.
In terminal this works nicely:
df | grep sda1 | head -c33 | tail -c7 | tr -d " "
In genmon, I get only numbers such as "1145944":
SDAFREE=$(df | grep sda1 | head -c33 | tail -c7 | tr -d " ")
echo="$SDAFREE"
How do I print that command's output through genmon to xfce panel correctly (same as in terminal)?
Thank you.
I have the same issue with every command with a pipe. As a workaround I put the command in a executable script and run the script in genmon.
BTW:
if you want just one value of a table, you can use awk instead of head, tail and tr:
df | awk '/sda1/ {print $4}'
I'm running this command on OS X to pull the logic board ID:
ioreg -l | grep board-id
which gives me this output:
| "board-id" = <"Mac-FC02E91DDD3FA6A4">
The only part I'm interested in is the "Mac-FC02E91DDD3FA6A4". Is there a way to filter the results from grep to only show me this part? OR is there a second step I could do to clean up the grep results?
Using awk you can do this
ioreg -l | awk -F\" '/board-id/ {print $4}
Mac-FC02E91DDD3FA6A4
This search for board-id, divide output by " and then print part 4
ioreg -l | grep "board-id" | cut -d \" -f 4
one way still with grep, try this line:
ioreg -l|grep -Po 'board-id".*<"\K[^"]*'
I have a file name clfile.me that looks like this;
44433430,"FALSE"
33095934,"TRUE"
41549968,"TRUE"
37945528,"FALSE"
18284764,"FALSE"
15007934,"FALSE"
The number is AIX PID. I have a command that will match the PIDs to a running process.
while read p; do
ps -ef | grep $p | grep 'myproram' | grep -v grep | awk "{ print \$2 }" >> clout.me
done < clfile.me
THe above works but only shows me the PID that matched from the grep command. I want to be able to see the matching PID and the TRUE or FALSE value from the original file. I guess I am asking how I filter the original file by PIDs that match my grep command.
Any thoughts?
Thanks
Chris
Took me a while, but I have it!
cat /dev/null > clout.me
while read p; do
x=$(awk '{ print $1 }')
ps -ef | grep x | grep 'myprogram' | grep -v grep | awk "{ print \$2 }" >> clout.me
done < clfile.me
awk 'FNR==NR{A[$1]=1;next} A[$1]' clout.me clfile.me
zgrep -i XXX XXX | grep -o "RID=[0-9|A-Z]*" |
uniq | cut -d "=" -f2 |
xargs -0 -I string echo "RequestID="string
My output is
RequestID=121212112
8127127128
8129129812
But my requirement is to have the request ID prefixed before all the output.
Any help is appreciated
I had a similar task and this worked for me. It might be what you are looking for:
zgrep -i XXX XXX | grep -o "RID=[0-9|A-Z]*" |
uniq | cut -d "=" -f2 |
xargs -I {} echo "RequestID="{}
Try -n option of xargs.
-n max-args
Use at most max-args arguments per command line. Fewer than max-args arguments will be used if the size (see the -s option)
is exceeded,
unless the -x option is given, in which case xargs will exit.
Example:
$ echo -e '1\n2' | xargs echo 'str ='
str = 1 2
$ echo -e '1\n2' | xargs -n 1 echo 'str ='
str = 1
str = 2
I'm trying to get the below command working but no o/p is getting printed:
tail -f mylog.log | grep --line-buffered -Eo '<S:Envelope .+Envelope>' | xmllint --format --recover -
However, if I grep the same pattern from a file, and pipe it to xmllint, it works:
grep --line-buffered -Eo '<S:Envelope .+Envelope>' tmp.xml | xmllint --format --recover -
What am I missing in the first command?
Can you try this (untested):
tail -f mylog.log | grep -Eo '<S:Envelope .+Envelope>' | while read line; do
echo $line | xmllint --format --recover -
done
(that is under the hypothesis that xmllint does not find EOF and as such is still waiting for input)
Try something like this -
grep --line-buffered -Eo '<S:Envelope .+Envelope>' <(tail -f mylog.log) &1> xmllint --format --recover -