Skipping the first line of file
How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?
Input
#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06
Code:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}
awk
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
|
show 6 more comments
How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?
Input
#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06
Code:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}
awk
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
1
Simply put agetlinein theBEGINblock and it will skip the first line.
– mosvy
Feb 6 at 5:02
Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.
– Lukáš Altman
Feb 6 at 5:07
You will see that a lot of people writeNR != 1 {...}or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, writeFNR>1 && (...your condition...) { ... }
– mosvy
Feb 6 at 5:07
BEGIN { getline; CONVFMT="%0.17f" }
– mosvy
Feb 6 at 5:08
I got an empty file.
– Lukáš Altman
Feb 6 at 5:13
|
show 6 more comments
How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?
Input
#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06
Code:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}
awk
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?
Input
#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06
Code:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}
awk
awk
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
edited Feb 6 at 6:07
Lukáš Altman
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
asked Feb 6 at 4:55
Lukáš AltmanLukáš Altman
345
345
1
Simply put agetlinein theBEGINblock and it will skip the first line.
– mosvy
Feb 6 at 5:02
Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.
– Lukáš Altman
Feb 6 at 5:07
You will see that a lot of people writeNR != 1 {...}or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, writeFNR>1 && (...your condition...) { ... }
– mosvy
Feb 6 at 5:07
BEGIN { getline; CONVFMT="%0.17f" }
– mosvy
Feb 6 at 5:08
I got an empty file.
– Lukáš Altman
Feb 6 at 5:13
|
show 6 more comments
1
Simply put agetlinein theBEGINblock and it will skip the first line.
– mosvy
Feb 6 at 5:02
Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.
– Lukáš Altman
Feb 6 at 5:07
You will see that a lot of people writeNR != 1 {...}or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, writeFNR>1 && (...your condition...) { ... }
– mosvy
Feb 6 at 5:07
BEGIN { getline; CONVFMT="%0.17f" }
– mosvy
Feb 6 at 5:08
I got an empty file.
– Lukáš Altman
Feb 6 at 5:13
1
1
Simply put a
getline in the BEGIN block and it will skip the first line.– mosvy
Feb 6 at 5:02
Simply put a
getline in the BEGIN block and it will skip the first line.– mosvy
Feb 6 at 5:02
Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.
– Lukáš Altman
Feb 6 at 5:07
Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.
– Lukáš Altman
Feb 6 at 5:07
You will see that a lot of people write
NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }– mosvy
Feb 6 at 5:07
You will see that a lot of people write
NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }– mosvy
Feb 6 at 5:07
BEGIN { getline; CONVFMT="%0.17f" }– mosvy
Feb 6 at 5:08
BEGIN { getline; CONVFMT="%0.17f" }– mosvy
Feb 6 at 5:08
I got an empty file.
– Lukáš Altman
Feb 6 at 5:13
I got an empty file.
– Lukáš Altman
Feb 6 at 5:13
|
show 6 more comments
1 Answer
1
active
oldest
votes
You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FNR>1 {print t($1-1000),t($2)}
This works here as expected.
With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.
answered Feb 6 at 21:35
JürgenJürgen
192110
add a comment |
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1 Answer
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votes
You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FNR>1 {print t($1-1000),t($2)}
This works here as expected.
With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.
answered Feb 6 at 21:35
JürgenJürgen
192110
add a comment |
You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FNR>1 {print t($1-1000),t($2)}
This works here as expected.
With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.
answered Feb 6 at 21:35
JürgenJürgen
192110
add a comment |
You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FNR>1 {print t($1-1000),t($2)}
This works here as expected.
With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.
answered Feb 6 at 21:35
JürgenJürgen
192110
You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:
BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FNR>1 {print t($1-1000),t($2)}
This works here as expected.
With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.
answered Feb 6 at 21:35
JürgenJürgen
192110
edited Feb 6 at 21:49
answered Feb 6 at 21:35
JürgenJürgen
192110
answered Feb 6 at 21:35
JürgenJürgen
192110
answered Feb 6 at 21:35
JürgenJürgen
192110
192110
add a comment |
add a comment |
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1
Simply put a
getlinein theBEGINblock and it will skip the first line.– mosvy
Feb 6 at 5:02
Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.
– Lukáš Altman
Feb 6 at 5:07
You will see that a lot of people write
NR != 1 {...}or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, writeFNR>1 && (...your condition...) { ... }– mosvy
Feb 6 at 5:07
BEGIN { getline; CONVFMT="%0.17f" }– mosvy
Feb 6 at 5:08
I got an empty file.
– Lukáš Altman
Feb 6 at 5:13