On RedHat, using this command (top ten cpu users):
top -n 1 -b -c|head -17|tail -11
I would only need the PID, USER, %CPU, %MEM, TIME+, & COMMAND columns
Ideally, I would like tabs between the first columns then the COMMAND column printing normally with space delimiters.
So, something similar to:
top -n 1 -b -c|head -17|tail -11|awk '{print $1"\t"$2"\t"$9"\t"$10"\t"$11"\t"} {for (i=12;i<=NF;i++) printf("%s ",$i)} {print ""}'
However, a newline occurs between the two print statements.
EXAMPLE OUTPUT:
PID USER %CPU %MEM TIME+ COMMAND
15968 root 17.8 0.0 0:00.11 /usr/local/bin/pmun -p -h vm21fc root
15962 igsg093 16.2 0.1 0:00.16 top -n 1 -b -c
15966 idig056 6.5 0.1 0:00.04 /usr/bin/perl -w /scripts/script.pl arg
15969 root 6.5 0.1 0:00.04 pmasterd -ars
1 root 0.0 0.0 0:03.37 init [3]
2 root 0.0 0.0 3:38.62 [migration/0]
3 root 0.0 0.0 0:29.41 [ksoftirqd/0]
4 root 0.0 0.0 0:00.00 [watchdog/0]
5 root 0.0 0.0 0:03.70 [events/0]
6 root 0.0 0.0 0:00.00 [khelper]
Any assistance would be appreciated. Thanks!
.
BONUS help: If possible to cut the output of characters of the second print statement (for COMMAND) to a certain length, that may be helpful too.
You can make use of the OFS (Output Field Separator) variable so that print handles the tabs for you:
top -n 1 -b -c| awk -vOFS="\t" 'NR>6 && NR<18 {s=""; for (i=12;i<=NF;++i) s=s FS $i; print $1,$2,$9,$10,$11,s}'
Comma separated arguments are printed with the OFS in between them.
If you would like to limit the length of s, you could take a substr of s in the print statement:
print $1,...,substr(s,0,N)
Where N is the maximum length of the the command.