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awk + how to capture the third field on both characters

Awk field separator bug?AWK : the ' ' as field separatorTwo files with a common field - is it possible to sort one based on the other?AWK Compare Column 1 from Two Files Print append column to third in outputawk + how to capture email address between characterscapture the second field and the last field from stringbash + how to capture the first/seconf/thired fieldHow to delete input field in AWK?how to print CSV from the third fieldUse awk on an Android command

0

from ps ax we get the following output

 ps ax
 PID TTY STAT TIME COMMAND
 1 ? Rs 611:56 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
 2 ? S 4:46 [kthreadd]
 3 ? R 3499:33 [ksoftirqd/0]
 5 ? S< 0:00 [kworker/0:0H]
 7 ? S 16:24 [migration/0]
 8 ? S 0:00 [rcu_bh]
 9 ? S 0:00 [rcuob/0]
 10 ? S 0:00 [rcuob/1]
 11 ? S 0:00 [rcuob/2]
 12 ? S 0:00 [rcuob/3]
 13 ? S 0:00 [rcuob/4]
 14 ? S 0:00 [rcuob/5]
 15 ? S 0:00 [rcuob/6]
 16 ? S 0:00 [rcuob/7]
 17 ? S 0:00 [rcuob/8]
 18 ? S 0:00 [rcuob/9]
 19 ? S 0:00 [rcuob/10]

so we want to capture the R on the third field for example

 ps ax | awk '$3 ~ /R/ print '
 139 ? R 1935:31 [rcuos/1]

now we want both , to capture R and D on the third field

in this case what should be the syntax in order to capture ether R or D on the third field ?

awk process ps

share|improve this question

edited yesterday

Jeff Schaller♦

43.9k1161141

asked yesterday

yaelyael

2,76432776

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  The regex /R|D/.
  
  – jordanm
  yesterday
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  or /[RD]/ as well.
  
  – glenn jackman
  yesterday
  

  
  
  
  

add a comment | 

0

from ps ax we get the following output

 ps ax
 PID TTY STAT TIME COMMAND
 1 ? Rs 611:56 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
 2 ? S 4:46 [kthreadd]
 3 ? R 3499:33 [ksoftirqd/0]
 5 ? S< 0:00 [kworker/0:0H]
 7 ? S 16:24 [migration/0]
 8 ? S 0:00 [rcu_bh]
 9 ? S 0:00 [rcuob/0]
 10 ? S 0:00 [rcuob/1]
 11 ? S 0:00 [rcuob/2]
 12 ? S 0:00 [rcuob/3]
 13 ? S 0:00 [rcuob/4]
 14 ? S 0:00 [rcuob/5]
 15 ? S 0:00 [rcuob/6]
 16 ? S 0:00 [rcuob/7]
 17 ? S 0:00 [rcuob/8]
 18 ? S 0:00 [rcuob/9]
 19 ? S 0:00 [rcuob/10]

so we want to capture the R on the third field for example

 ps ax | awk '$3 ~ /R/ print '
 139 ? R 1935:31 [rcuos/1]

now we want both , to capture R and D on the third field

in this case what should be the syntax in order to capture ether R or D on the third field ?

awk process ps

share|improve this question

edited yesterday

Jeff Schaller♦

43.9k1161141

asked yesterday

yaelyael

2,76432776

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  The regex /R|D/.
  
  – jordanm
  yesterday
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  or /[RD]/ as well.
  
  – glenn jackman
  yesterday
  

  
  
  
  

add a comment | 

from ps ax we get the following output

 ps ax
 PID TTY STAT TIME COMMAND
 1 ? Rs 611:56 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
 2 ? S 4:46 [kthreadd]
 3 ? R 3499:33 [ksoftirqd/0]
 5 ? S< 0:00 [kworker/0:0H]
 7 ? S 16:24 [migration/0]
 8 ? S 0:00 [rcu_bh]
 9 ? S 0:00 [rcuob/0]
 10 ? S 0:00 [rcuob/1]
 11 ? S 0:00 [rcuob/2]
 12 ? S 0:00 [rcuob/3]
 13 ? S 0:00 [rcuob/4]
 14 ? S 0:00 [rcuob/5]
 15 ? S 0:00 [rcuob/6]
 16 ? S 0:00 [rcuob/7]
 17 ? S 0:00 [rcuob/8]
 18 ? S 0:00 [rcuob/9]
 19 ? S 0:00 [rcuob/10]

so we want to capture the R on the third field for example

 ps ax | awk '$3 ~ /R/ print '
 139 ? R 1935:31 [rcuos/1]

now we want both , to capture R and D on the third field

in this case what should be the syntax in order to capture ether R or D on the third field ?

awk process ps

share|improve this question

edited yesterday

Jeff Schaller♦

43.9k1161141

asked yesterday

yaelyael

2,76432776

 ps ax
 PID TTY STAT TIME COMMAND
 1 ? Rs 611:56 /usr/lib/systemd/systemd --switched-root --system --deserialize 21
 2 ? S 4:46 [kthreadd]
 3 ? R 3499:33 [ksoftirqd/0]
 5 ? S< 0:00 [kworker/0:0H]
 7 ? S 16:24 [migration/0]
 8 ? S 0:00 [rcu_bh]
 9 ? S 0:00 [rcuob/0]
 10 ? S 0:00 [rcuob/1]
 11 ? S 0:00 [rcuob/2]
 12 ? S 0:00 [rcuob/3]
 13 ? S 0:00 [rcuob/4]
 14 ? S 0:00 [rcuob/5]
 15 ? S 0:00 [rcuob/6]
 16 ? S 0:00 [rcuob/7]
 17 ? S 0:00 [rcuob/8]
 18 ? S 0:00 [rcuob/9]
 19 ? S 0:00 [rcuob/10]

 ps ax | awk '$3 ~ /R/ print '
 139 ? R 1935:31 [rcuos/1]

share|improve this question

edited yesterday

Jeff Schaller♦

43.9k1161141

asked yesterday

yaelyael

2,76432776

share|improve this question

edited yesterday

Jeff Schaller♦

43.9k1161141

asked yesterday

yaelyael

2,76432776

edited yesterday

Jeff Schaller♦

43.9k1161141

edited yesterday

Jeff Schaller♦

43.9k1161141

asked yesterday

yaelyael

2,76432776

asked yesterday

yaelyael

2,76432776

1 Answer
1

active

oldest

votes

6

either

ps -ax | awk '$3 ~ /R|D/ '

or

ps -ax | awk '$3 == "R" || $3 == "D" '

note that implicit action is print

---

you can use o option in ps to change or select field you need

ps -a -o stat,pid,args | awk '$1 ~ /[DR]/ $1="" ; print '

share|improve this answer

edited yesterday

answered yesterday

ArchemarArchemar

20.4k93973

add a comment | 

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6

either

ps -ax | awk '$3 ~ /R|D/ '

or

ps -ax | awk '$3 == "R" || $3 == "D" '

note that implicit action is print

---

you can use o option in ps to change or select field you need

ps -a -o stat,pid,args | awk '$1 ~ /[DR]/ $1="" ; print '

share|improve this answer

edited yesterday

answered yesterday

ArchemarArchemar

20.4k93973

add a comment | 

6

either

ps -ax | awk '$3 ~ /R|D/ '

or

ps -ax | awk '$3 == "R" || $3 == "D" '

note that implicit action is print

---

you can use o option in ps to change or select field you need

ps -a -o stat,pid,args | awk '$1 ~ /[DR]/ $1="" ; print '

share|improve this answer

edited yesterday

answered yesterday

ArchemarArchemar

20.4k93973

add a comment | 

either

ps -ax | awk '$3 ~ /R|D/ '

or

ps -ax | awk '$3 == "R" || $3 == "D" '

note that implicit action is print

---

you can use o option in ps to change or select field you need

ps -a -o stat,pid,args | awk '$1 ~ /[DR]/ $1="" ; print '

share|improve this answer

edited yesterday

answered yesterday

ArchemarArchemar

20.4k93973

ps -ax | awk '$3 ~ /R|D/ '

ps -ax | awk '$3 == "R" || $3 == "D" '

ps -a -o stat,pid,args | awk '$1 ~ /[DR]/ $1="" ; print '

share|improve this answer

edited yesterday

answered yesterday

ArchemarArchemar

20.4k93973

answered yesterday

ArchemarArchemar

20.4k93973

answered yesterday

ArchemarArchemar

20.4k93973