Manipulating text in first column only? [duplicate]
This question already has an answer here:
modify specific column with sed or awk
4 answers
Example Input:
foobar@example.com foo@example.com,bar@example.com
Example Output:
foobar@example.org foo@example.com,bar@example.com
So, in "normal" circumstances, it would obviously be easy to do something like:
sed 's/.com/.org/g'
But obviously in this case, I only want the suffix in the first column to be manipulated, I want the second column to be left untouched.
I don't mind what tool you propose to use. But I prefer it to available on a standard linux without needing further install (i.e. something like sed or awk or perl would be more preferable to bobsobscuretoolthatneedsinstalling).
text-processing awk sed perl
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
marked as duplicate by Jeff Schaller, RalfFriedl, Stephen Harris, jimmij, LukeM Dec 12 '18 at 6:03
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
This question already has an answer here:
modify specific column with sed or awk
4 answers
Example Input:
foobar@example.com foo@example.com,bar@example.com
Example Output:
foobar@example.org foo@example.com,bar@example.com
So, in "normal" circumstances, it would obviously be easy to do something like:
sed 's/.com/.org/g'
But obviously in this case, I only want the suffix in the first column to be manipulated, I want the second column to be left untouched.
I don't mind what tool you propose to use. But I prefer it to available on a standard linux without needing further install (i.e. something like sed or awk or perl would be more preferable to bobsobscuretoolthatneedsinstalling).
text-processing awk sed perl
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
marked as duplicate by Jeff Schaller, RalfFriedl, Stephen Harris, jimmij, LukeM Dec 12 '18 at 6:03
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
2
Why not just leave off the "g" at the end of thesedcommand? Then it will only replace the first occurrence...
– twalberg
Dec 11 '18 at 16:46
I’m a simple man. I see columns, I think “awk”.
– Konrad Rudolph
Dec 11 '18 at 17:45
@twalberg What if the first column has no.combut the second does?
– Nic Hartley
Dec 11 '18 at 18:22
@NicHartley Valid point in general, in which case I would use something like the acceptedawksolution. But, it doesn't match the supplied sample input, which may or may not mean anything...
– twalberg
Dec 11 '18 at 18:23
add a comment |
This question already has an answer here:
modify specific column with sed or awk
4 answers
Example Input:
foobar@example.com foo@example.com,bar@example.com
Example Output:
foobar@example.org foo@example.com,bar@example.com
So, in "normal" circumstances, it would obviously be easy to do something like:
sed 's/.com/.org/g'
But obviously in this case, I only want the suffix in the first column to be manipulated, I want the second column to be left untouched.
I don't mind what tool you propose to use. But I prefer it to available on a standard linux without needing further install (i.e. something like sed or awk or perl would be more preferable to bobsobscuretoolthatneedsinstalling).
text-processing awk sed perl
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
This question already has an answer here:
modify specific column with sed or awk
4 answers
Example Input:
foobar@example.com foo@example.com,bar@example.com
Example Output:
foobar@example.org foo@example.com,bar@example.com
So, in "normal" circumstances, it would obviously be easy to do something like:
sed 's/.com/.org/g'
But obviously in this case, I only want the suffix in the first column to be manipulated, I want the second column to be left untouched.
I don't mind what tool you propose to use. But I prefer it to available on a standard linux without needing further install (i.e. something like sed or awk or perl would be more preferable to bobsobscuretoolthatneedsinstalling).
This question already has an answer here:
modify specific column with sed or awk
4 answers
text-processing awk sed perl
text-processing awk sed perl
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
asked Dec 11 '18 at 9:25
Little CodeLittle Code
1928
1928
marked as duplicate by Jeff Schaller, RalfFriedl, Stephen Harris, jimmij, LukeM Dec 12 '18 at 6:03
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
marked as duplicate by Jeff Schaller, RalfFriedl, Stephen Harris, jimmij, LukeM Dec 12 '18 at 6:03
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
2
Why not just leave off the "g" at the end of thesedcommand? Then it will only replace the first occurrence...
– twalberg
Dec 11 '18 at 16:46
I’m a simple man. I see columns, I think “awk”.
– Konrad Rudolph
Dec 11 '18 at 17:45
@twalberg What if the first column has no.combut the second does?
– Nic Hartley
Dec 11 '18 at 18:22
@NicHartley Valid point in general, in which case I would use something like the acceptedawksolution. But, it doesn't match the supplied sample input, which may or may not mean anything...
– twalberg
Dec 11 '18 at 18:23
add a comment |
2
Why not just leave off the "g" at the end of thesedcommand? Then it will only replace the first occurrence...
– twalberg
Dec 11 '18 at 16:46
I’m a simple man. I see columns, I think “awk”.
– Konrad Rudolph
Dec 11 '18 at 17:45
@twalberg What if the first column has no.combut the second does?
– Nic Hartley
Dec 11 '18 at 18:22
@NicHartley Valid point in general, in which case I would use something like the acceptedawksolution. But, it doesn't match the supplied sample input, which may or may not mean anything...
– twalberg
Dec 11 '18 at 18:23
2
2
Why not just leave off the "g" at the end of the
sed command? Then it will only replace the first occurrence...– twalberg
Dec 11 '18 at 16:46
Why not just leave off the "g" at the end of the
sed command? Then it will only replace the first occurrence...– twalberg
Dec 11 '18 at 16:46
I’m a simple man. I see columns, I think “awk”.
– Konrad Rudolph
Dec 11 '18 at 17:45
I’m a simple man. I see columns, I think “awk”.
– Konrad Rudolph
Dec 11 '18 at 17:45
@twalberg What if the first column has no
.com but the second does?– Nic Hartley
Dec 11 '18 at 18:22
@twalberg What if the first column has no
.com but the second does?– Nic Hartley
Dec 11 '18 at 18:22
@NicHartley Valid point in general, in which case I would use something like the accepted
awk solution. But, it doesn't match the supplied sample input, which may or may not mean anything...– twalberg
Dec 11 '18 at 18:23
@NicHartley Valid point in general, in which case I would use something like the accepted
awk solution. But, it doesn't match the supplied sample input, which may or may not mean anything...– twalberg
Dec 11 '18 at 18:23
add a comment |
3 Answers
3
active
oldest
votes
$ awk '{ sub(".com$", ".org", $1); print }' <file
foobar@example.org foo@example.com,bar@example.com
This uses awk to substitute the text matched by .com$ with .org in the first whitespace-delimited field (only) of each line. The output will be space-delimited.
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
add a comment |
If you just want to replace the first occurrence of .com with .org, all you need is the default behavior of sed's s/// operator. Just don't use the g flag:
$ sed 's/.com/.org/' file
foobar@example.org foo@example.com,bar@example.com
If you really want to only make the change on the first comma-defined field, so that if the first .com appears elsewhere in the line, it will remain unchanged, you can do something like:
$ perl -pe 's/^(S+).com/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, safer in case com occurs as a substring (e.g. foo.common.net):
$ perl -pe 's/^(S+).comb/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Alternatively, in GNU sed:
$ sed -E 's/^(S+).comb/1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, portably (assuming the first field is defined by the first space and not a tab or other whitespace):
$ sed -E 's/^([^ ]).com /1.org /' file
foobar@example.org foo@example.com,bar@example.com
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
add a comment |
You can do it using sed, just use a regexp that can only match the first word of the line:
sed -r 's/^(S+).com(s+)/1.org2/'
In slo-mo, change:
- a sequence of one or more non-spaces from the beginning (
^(S+)) .com- a sequence of one or more non spaces (so that we can only match a final
.com)
into:
- the first sequence of non-spaces
.org- the sequence of spaces
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
Not using the/gdoesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the finals+insures that we aren't replacing.comin the middle of a node id such assome.commonname.com.
– xenoid
Dec 11 '18 at 10:47
Note that the use of PCRE requires GNUsed.
– Kusalananda
Dec 11 '18 at 12:04
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
add a comment |
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$ awk '{ sub(".com$", ".org", $1); print }' <file
foobar@example.org foo@example.com,bar@example.com
This uses awk to substitute the text matched by .com$ with .org in the first whitespace-delimited field (only) of each line. The output will be space-delimited.
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
add a comment |
$ awk '{ sub(".com$", ".org", $1); print }' <file
foobar@example.org foo@example.com,bar@example.com
This uses awk to substitute the text matched by .com$ with .org in the first whitespace-delimited field (only) of each line. The output will be space-delimited.
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
add a comment |
$ awk '{ sub(".com$", ".org", $1); print }' <file
foobar@example.org foo@example.com,bar@example.com
This uses awk to substitute the text matched by .com$ with .org in the first whitespace-delimited field (only) of each line. The output will be space-delimited.
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
$ awk '{ sub(".com$", ".org", $1); print }' <file
foobar@example.org foo@example.com,bar@example.com
This uses awk to substitute the text matched by .com$ with .org in the first whitespace-delimited field (only) of each line. The output will be space-delimited.
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
edited Dec 11 '18 at 9:34
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
answered Dec 11 '18 at 9:30
KusalanandaKusalananda
127k16240395
127k16240395
add a comment |
add a comment |
If you just want to replace the first occurrence of .com with .org, all you need is the default behavior of sed's s/// operator. Just don't use the g flag:
$ sed 's/.com/.org/' file
foobar@example.org foo@example.com,bar@example.com
If you really want to only make the change on the first comma-defined field, so that if the first .com appears elsewhere in the line, it will remain unchanged, you can do something like:
$ perl -pe 's/^(S+).com/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, safer in case com occurs as a substring (e.g. foo.common.net):
$ perl -pe 's/^(S+).comb/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Alternatively, in GNU sed:
$ sed -E 's/^(S+).comb/1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, portably (assuming the first field is defined by the first space and not a tab or other whitespace):
$ sed -E 's/^([^ ]).com /1.org /' file
foobar@example.org foo@example.com,bar@example.com
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
add a comment |
If you just want to replace the first occurrence of .com with .org, all you need is the default behavior of sed's s/// operator. Just don't use the g flag:
$ sed 's/.com/.org/' file
foobar@example.org foo@example.com,bar@example.com
If you really want to only make the change on the first comma-defined field, so that if the first .com appears elsewhere in the line, it will remain unchanged, you can do something like:
$ perl -pe 's/^(S+).com/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, safer in case com occurs as a substring (e.g. foo.common.net):
$ perl -pe 's/^(S+).comb/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Alternatively, in GNU sed:
$ sed -E 's/^(S+).comb/1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, portably (assuming the first field is defined by the first space and not a tab or other whitespace):
$ sed -E 's/^([^ ]).com /1.org /' file
foobar@example.org foo@example.com,bar@example.com
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
add a comment |
If you just want to replace the first occurrence of .com with .org, all you need is the default behavior of sed's s/// operator. Just don't use the g flag:
$ sed 's/.com/.org/' file
foobar@example.org foo@example.com,bar@example.com
If you really want to only make the change on the first comma-defined field, so that if the first .com appears elsewhere in the line, it will remain unchanged, you can do something like:
$ perl -pe 's/^(S+).com/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, safer in case com occurs as a substring (e.g. foo.common.net):
$ perl -pe 's/^(S+).comb/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Alternatively, in GNU sed:
$ sed -E 's/^(S+).comb/1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, portably (assuming the first field is defined by the first space and not a tab or other whitespace):
$ sed -E 's/^([^ ]).com /1.org /' file
foobar@example.org foo@example.com,bar@example.com
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
If you just want to replace the first occurrence of .com with .org, all you need is the default behavior of sed's s/// operator. Just don't use the g flag:
$ sed 's/.com/.org/' file
foobar@example.org foo@example.com,bar@example.com
If you really want to only make the change on the first comma-defined field, so that if the first .com appears elsewhere in the line, it will remain unchanged, you can do something like:
$ perl -pe 's/^(S+).com/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, safer in case com occurs as a substring (e.g. foo.common.net):
$ perl -pe 's/^(S+).comb/$1.org/' file
foobar@example.org foo@example.com,bar@example.com
Alternatively, in GNU sed:
$ sed -E 's/^(S+).comb/1.org/' file
foobar@example.org foo@example.com,bar@example.com
Or, portably (assuming the first field is defined by the first space and not a tab or other whitespace):
$ sed -E 's/^([^ ]).com /1.org /' file
foobar@example.org foo@example.com,bar@example.com
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
edited Dec 11 '18 at 12:29
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
answered Dec 11 '18 at 10:34
terdon♦terdon
130k32254432
130k32254432
add a comment |
add a comment |
You can do it using sed, just use a regexp that can only match the first word of the line:
sed -r 's/^(S+).com(s+)/1.org2/'
In slo-mo, change:
- a sequence of one or more non-spaces from the beginning (
^(S+)) .com- a sequence of one or more non spaces (so that we can only match a final
.com)
into:
- the first sequence of non-spaces
.org- the sequence of spaces
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
Not using the/gdoesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the finals+insures that we aren't replacing.comin the middle of a node id such assome.commonname.com.
– xenoid
Dec 11 '18 at 10:47
Note that the use of PCRE requires GNUsed.
– Kusalananda
Dec 11 '18 at 12:04
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
add a comment |
You can do it using sed, just use a regexp that can only match the first word of the line:
sed -r 's/^(S+).com(s+)/1.org2/'
In slo-mo, change:
- a sequence of one or more non-spaces from the beginning (
^(S+)) .com- a sequence of one or more non spaces (so that we can only match a final
.com)
into:
- the first sequence of non-spaces
.org- the sequence of spaces
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
Not using the/gdoesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the finals+insures that we aren't replacing.comin the middle of a node id such assome.commonname.com.
– xenoid
Dec 11 '18 at 10:47
Note that the use of PCRE requires GNUsed.
– Kusalananda
Dec 11 '18 at 12:04
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
add a comment |
You can do it using sed, just use a regexp that can only match the first word of the line:
sed -r 's/^(S+).com(s+)/1.org2/'
In slo-mo, change:
- a sequence of one or more non-spaces from the beginning (
^(S+)) .com- a sequence of one or more non spaces (so that we can only match a final
.com)
into:
- the first sequence of non-spaces
.org- the sequence of spaces
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
You can do it using sed, just use a regexp that can only match the first word of the line:
sed -r 's/^(S+).com(s+)/1.org2/'
In slo-mo, change:
- a sequence of one or more non-spaces from the beginning (
^(S+)) .com- a sequence of one or more non spaces (so that we can only match a final
.com)
into:
- the first sequence of non-spaces
.org- the sequence of spaces
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
edited Dec 11 '18 at 10:14
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
answered Dec 11 '18 at 9:59
xenoidxenoid
3,0271725
3,0271725
Not using the/gdoesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the finals+insures that we aren't replacing.comin the middle of a node id such assome.commonname.com.
– xenoid
Dec 11 '18 at 10:47
Note that the use of PCRE requires GNUsed.
– Kusalananda
Dec 11 '18 at 12:04
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
add a comment |
Not using the/gdoesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the finals+insures that we aren't replacing.comin the middle of a node id such assome.commonname.com.
– xenoid
Dec 11 '18 at 10:47
Note that the use of PCRE requires GNUsed.
– Kusalananda
Dec 11 '18 at 12:04
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
Not using the
/g doesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the final s+ insures that we aren't replacing .com in the middle of a node id such as some.commonname.com.– xenoid
Dec 11 '18 at 10:47
Not using the
/g doesn't prevent the substitution to occur in other items of the line if it doesn't happen on the first. And capturing the final s+ insures that we aren't replacing .com in the middle of a node id such as some.commonname.com.– xenoid
Dec 11 '18 at 10:47
Note that the use of PCRE requires GNU
sed.– Kusalananda
Dec 11 '18 at 12:04
Note that the use of PCRE requires GNU
sed.– Kusalananda
Dec 11 '18 at 12:04
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
OP asked for "standard Linux" :)
– xenoid
Dec 11 '18 at 12:54
add a comment |
2
Why not just leave off the "g" at the end of the
sedcommand? Then it will only replace the first occurrence...– twalberg
Dec 11 '18 at 16:46
I’m a simple man. I see columns, I think “awk”.
– Konrad Rudolph
Dec 11 '18 at 17:45
@twalberg What if the first column has no
.combut the second does?– Nic Hartley
Dec 11 '18 at 18:22
@NicHartley Valid point in general, in which case I would use something like the accepted
awksolution. But, it doesn't match the supplied sample input, which may or may not mean anything...– twalberg
Dec 11 '18 at 18:23