How to feed awk input from both pipe and file?
up vote
2
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I was wondering how do I get awk to take a string from the pipe output and a file?
I've basically have a chain of commands that eventually will spit out a string. I want to check this string against a csv file (columns separated by commas). Then, I want to find the first row in the file that contains the string in the 7th column of the csv file and print out the contents of the 5th column of that line. Also, I don't know linux command line utilities/awk too well, so feel free to suggest completely different methods. :)
CSV file contents look like this:
col1,col2,col3,col4,col5,etc...
col1,col2,col3,col4,col5,etc...
etc...
My general line of thought:
(rest of commands that will give a string) | awk -F ',' 'if($5 == string){print $7;exit}' filename.txt
Can this be done? If so, how do I tell awk to compare against that string?
I've found some stuff about using a - symbol with ARGV before the filename, but couldn't get it working.
linux awk
edited Oct 15 '15 at 0:43
Barmar
415k34239340
asked Oct 15 '15 at 0:19
XeroAura
185
add a comment |
up vote
2
down vote
favorite
I was wondering how do I get awk to take a string from the pipe output and a file?
I've basically have a chain of commands that eventually will spit out a string. I want to check this string against a csv file (columns separated by commas). Then, I want to find the first row in the file that contains the string in the 7th column of the csv file and print out the contents of the 5th column of that line. Also, I don't know linux command line utilities/awk too well, so feel free to suggest completely different methods. :)
CSV file contents look like this:
col1,col2,col3,col4,col5,etc...
col1,col2,col3,col4,col5,etc...
etc...
My general line of thought:
(rest of commands that will give a string) | awk -F ',' 'if($5 == string){print $7;exit}' filename.txt
Can this be done? If so, how do I tell awk to compare against that string?
I've found some stuff about using a - symbol with ARGV before the filename, but couldn't get it working.
linux awk
edited Oct 15 '15 at 0:43
Barmar
415k34239340
asked Oct 15 '15 at 0:19
XeroAura
185
1
Don't use a pipe. Store the searched string in a variable.
– Karoly Horvath
Oct 15 '15 at 0:26
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I was wondering how do I get awk to take a string from the pipe output and a file?
I've basically have a chain of commands that eventually will spit out a string. I want to check this string against a csv file (columns separated by commas). Then, I want to find the first row in the file that contains the string in the 7th column of the csv file and print out the contents of the 5th column of that line. Also, I don't know linux command line utilities/awk too well, so feel free to suggest completely different methods. :)
CSV file contents look like this:
col1,col2,col3,col4,col5,etc...
col1,col2,col3,col4,col5,etc...
etc...
My general line of thought:
(rest of commands that will give a string) | awk -F ',' 'if($5 == string){print $7;exit}' filename.txt
Can this be done? If so, how do I tell awk to compare against that string?
I've found some stuff about using a - symbol with ARGV before the filename, but couldn't get it working.
linux awk
edited Oct 15 '15 at 0:43
Barmar
415k34239340
asked Oct 15 '15 at 0:19
XeroAura
185
I was wondering how do I get awk to take a string from the pipe output and a file?
I've basically have a chain of commands that eventually will spit out a string. I want to check this string against a csv file (columns separated by commas). Then, I want to find the first row in the file that contains the string in the 7th column of the csv file and print out the contents of the 5th column of that line. Also, I don't know linux command line utilities/awk too well, so feel free to suggest completely different methods. :)
CSV file contents look like this:
col1,col2,col3,col4,col5,etc...
col1,col2,col3,col4,col5,etc...
etc...
My general line of thought:
(rest of commands that will give a string) | awk -F ',' 'if($5 == string){print $7;exit}' filename.txt
Can this be done? If so, how do I tell awk to compare against that string?
I've found some stuff about using a - symbol with ARGV before the filename, but couldn't get it working.
linux awk
linux awk
edited Oct 15 '15 at 0:43
Barmar
415k34239340
asked Oct 15 '15 at 0:19
XeroAura
185
edited Oct 15 '15 at 0:43
Barmar
415k34239340
asked Oct 15 '15 at 0:19
XeroAura
185
edited Oct 15 '15 at 0:43
Barmar
415k34239340
edited Oct 15 '15 at 0:43
Barmar
415k34239340
edited Oct 15 '15 at 0:43
Barmar
415k34239340
415k34239340
asked Oct 15 '15 at 0:19
XeroAura
185
asked Oct 15 '15 at 0:19
XeroAura
185
asked Oct 15 '15 at 0:19
XeroAura
185
185
1
Don't use a pipe. Store the searched string in a variable.
– Karoly Horvath
Oct 15 '15 at 0:26
add a comment |
1
Don't use a pipe. Store the searched string in a variable.
– Karoly Horvath
Oct 15 '15 at 0:26
1
1
Don't use a pipe. Store the searched string in a variable.
– Karoly Horvath
Oct 15 '15 at 0:26
Don't use a pipe. Store the searched string in a variable.
– Karoly Horvath
Oct 15 '15 at 0:26
add a comment |
1 Answer
1
active
oldest
votes
up vote
7
down vote
accepted
As Karoly suggests,
str=$( rest of commands that will give a string )
awk -v s="$str" -F, '$7==s {print $5; exit}' file
If you want to feed awk with a pipe:
cmds | awk -F, 'NR==FNR {str=$0; next}; $7==str {print $5}' - file
I think the first option is more readable.
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
I welcomed your second answer as you sometimes want to docmd | awk '...' file -
– kvantour
Jun 7 at 14:20
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
7
down vote
accepted
As Karoly suggests,
str=$( rest of commands that will give a string )
awk -v s="$str" -F, '$7==s {print $5; exit}' file
If you want to feed awk with a pipe:
cmds | awk -F, 'NR==FNR {str=$0; next}; $7==str {print $5}' - file
I think the first option is more readable.
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
I welcomed your second answer as you sometimes want to docmd | awk '...' file -
– kvantour
Jun 7 at 14:20
add a comment |
up vote
7
down vote
accepted
As Karoly suggests,
str=$( rest of commands that will give a string )
awk -v s="$str" -F, '$7==s {print $5; exit}' file
If you want to feed awk with a pipe:
cmds | awk -F, 'NR==FNR {str=$0; next}; $7==str {print $5}' - file
I think the first option is more readable.
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
I welcomed your second answer as you sometimes want to docmd | awk '...' file -
– kvantour
Jun 7 at 14:20
add a comment |
up vote
7
down vote
accepted
up vote
7
down vote
accepted
As Karoly suggests,
str=$( rest of commands that will give a string )
awk -v s="$str" -F, '$7==s {print $5; exit}' file
If you want to feed awk with a pipe:
cmds | awk -F, 'NR==FNR {str=$0; next}; $7==str {print $5}' - file
I think the first option is more readable.
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
As Karoly suggests,
str=$( rest of commands that will give a string )
awk -v s="$str" -F, '$7==s {print $5; exit}' file
If you want to feed awk with a pipe:
cmds | awk -F, 'NR==FNR {str=$0; next}; $7==str {print $5}' - file
I think the first option is more readable.
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
answered Oct 15 '15 at 0:42
glenn jackman
165k26140234
165k26140234
I welcomed your second answer as you sometimes want to docmd | awk '...' file -
– kvantour
Jun 7 at 14:20
add a comment |
I welcomed your second answer as you sometimes want to docmd | awk '...' file -
– kvantour
Jun 7 at 14:20
I welcomed your second answer as you sometimes want to do
cmd | awk '...' file -– kvantour
Jun 7 at 14:20
I welcomed your second answer as you sometimes want to do
cmd | awk '...' file -– kvantour
Jun 7 at 14:20
add a comment |
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1
Don't use a pipe. Store the searched string in a variable.
– Karoly Horvath
Oct 15 '15 at 0:26