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I want to print the CPU's name, followed by the MHz (min, current and max, in that order).
The best I could get so far is 4 lines of output in their original order (name, current MHz, max MHz, min MHz):
Code tried
lscpu | sed -n -e "s/Model name: *//p" -e "s/CPU min MHz: *//p" -e "s/CPU MHz: *//p" -e "s/CPU max MHz: *//p"
Output
AMD EPYC 7443 24-Core Processor
1786.548
4035.6440
1500.0000
Expected Output
AMD EPYC 7443 24-Core Processor # 1500.0000 < 1786.548 < 4035.6440 MHz
Just literally read the lines and output what you want to output.
.... | { read first; read second; read third; read fourth; echo "$first # $fourth < $second < $third MHz"; }
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Why does Unix give the result 0 when I execute the following command?
echo "7%2" | bc -l
And give result 1 when I execute the following command?
echo "7%2" | bc
why does Unix gives result 0 when I execute the command: echo "7%2" | bc -l
From the bc manual:
If bc is invoked with the -l option, a math library is preloaded and the default scale is set to 20.
And
expr % expr
The result of the expression is the "remainder" and it
is computed in the following way. To compute a%b,
first a/b is
computed to scale digits. That result is used to compute a-(a/b)*b
to the scale of the maximum of scale+scale(b) and scale(a). If
scale is set to zero and both expressions are integers this
expression is the integer remainder function.
So:
a=7 b=2
a/b = 7 / 2 = 3.50000000000000000000000000000000000000000000000000
7%2 = a-(a/b)*b =
= 7 - (7/2)*2 =
= 7 - (3.50000000000000000000000000000000000000000000000000) * 2 =
= 7 - 7 =
= 0
and gives result 1 when I execute the command: echo "7%2" | bc
From the bc manual:
scale defines how some operations use digits after the decimal point. The default value of scale is 0.
In that case:
a=7 b=2
a/b = 7 / 2 = 3 # scale is 0, rounds down
a%b = a-(a/b)*b =
= 7 - (7/2)*2 =
= 7 - 3 * 2 =
= 7 - 6 =
= 1
Because the 7/2 is computed with different scale, the resulting expression differs.
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I have a huge csv file, demo.csv (few GBs in size) which has 3 columns like the following:
$ cat demo.csv
call_start_time,called_no,calling_no
43284.85326,1111111111,2222222222
43284.83192,3333333333,1111111111
43284.83205,2222222222,1111111111
43284.81304,4444444444,3333333333
I am trying to find the rows which has repeated values in either column 2 or 3 (whatever the order). For example, this should be the output for the data shown above:
call_start_time,called_no,calling_no
43284.85326,1111111111,2222222222
43284.83205,2222222222,1111111111
I tried to use csvkit:
csvsql --query "select called_no, calling_no, call_start_time, count(1) from file123 group by called_no,calling_no having count(1)>1" file123.csv > new.csv
With awk you can build an associative array a with records as values and keys k build with the fields $2 and $3 sorted and joined with a pipe.
awk -F, 'NR==1; { k=($3<$2) ? $3"|"$2 : $2"|"$3; if (a[k]) { if (a[k]!="#") {print a[k];a[k]="#"} print} else a[k]=$0}' file
If the current record has a key that already exists, the stored record is printed (only if it is the first time) and the current record is printed too.
$ awk '
NR==1 { print; next }
{ key = ($2>$3 ? $2 FS $3 : $3 FS $2) }
seen[key]++ { print orig[key] $0; delete orig[key]; next }
{ orig[key] = $0 ORS }
' file
call_start_time called_no calling_no
43284.85326 1111111111 2222222222
43284.83205 2222222222 1111111111
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When i issue the command /usr/bin/time script.sh it can vary in time because of the load of course (sometimes could be 10 secs and sometime could be 2 minutes), problem is that i need notification if time execution is higher than 30 sec (could also include minutes..) and warning if is 20-30 seconds.
What is the best way to catch all time values for requested tresholds:
/usr/bin/time ./script.sh | awk'/real/ {print $2}'
30.0
/usr/bin/time ./script.sh | awk'/real/ {print $2}'
1:24.2
/usr/bin/time ./script.sh | awk'/real/ {print $2}'
3.1
Given the following warning thresholds:
Critical: 30 seconds or longer
Warning: 20 seconds to 30 seconds
OK: less than 20 seconds
And based on the output of /usr/bin/time on your machine, which seems to use a format of hh:mm:ss.d with optional hours and minutes places:
my $time = `/usr/bin/time ./vladtest.sh | awk '/real/ {print $2}'`
my $status;
if ($time =~ /^[01]?\d\./) { # time is 0-9 seconds or 10-19 seconds
$status = "OK";
}
elsif ($time =~ /^(2\d|30)\./) { # time is 20-30 seconds
$status = "WARNING";
}
else { # any other time is critical
$status = "CRITICAL";
}
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These are 2 samples:
Size: 15x6.5
Size: 15x7
I need a regex command to capture the digits before "x" and another regex command to capture digits after.
I want to obtain something like this:
Size: 15x6.5 --> 1) 15 2) 6.5
Size: 15x7 --> 1) 15 2) 7
Use regular expression: (\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)
You didn't specified the regular expression engine you are using.
Python
>>> import re
>>> matched = re.search(r'(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)', 'Size: 15x6.5')
>>> matched.groups()
('15', '6.5')
>>> matched = re.search(r'(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)', 'Size: 15x7')
>>> matched.groups()
('15', '7')
Ruby
>> 'Size: 15x6.5'.scan(/(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)/)
=> [["15", "6.5"]]
>> 'Size: 15x7'.scan(/(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)/)
=> [["15", "7"]]
Javascript
> 'Size: 15x6.5'.match(/(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)/)
["15x6.5", "15", "6.5"]
> 'Size: 15x7'.match(/(\d+(?:\.\d+)?)x(\d+(?:\.\d+)?)/)
["15x7", "15", "7"]
UPDATE
Use (\d+(?:\.\d+)?)(?=x) and (?<=x)(\d+(?:\.\d+)?)
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A bash script request(or fish script).
I have a bunch of files like:
SDF1211B-03 - name - lastname.info
SDF1213B-04 - names - lastnames.info
SDF1211B-05 - name & name - lastname & lastname.info
but I want to change all of them to:
name - lastname.info
names - lastnames.info
name & name - lastname & lastname.info
I would do this with a for loop and the ${X#Y} shell pattern:
for f in SDF?????-??' - '* ; do
mv "$f" "${f#SDF?????-?? - }"
done
You could do this:
for x in SDF*.info; do
mv "$x" "$(echo $x | cut -c14-)"
done