Merge every two lines after processing each of them with external shell command
I have a file of the following structure:
#1552342335
ls
#1552342359
date
#1552342380
cat .bash_history
i.e. timestamp followed by a text line. I want to process every timestamp line using shell's date (something like date -d ${1/#/@} '+%F %T'), merge it with the next line and wrap with table tags, i.e. the output would be the following:
<tr> <td>2019-03-11 18:12:15</td> <td><pre>ls</pre></td> </tr>
<tr> <td>2019-03-11 18:12:39</td> <td><pre>date</pre></td> </tr>
<tr> <td>2019-03-11 18:13:00</td> <td><pre>cat .bash_history</pre></td> </tr>
I understand it would be something like awk 'NR % 2 {print | " <something here>" } !(NR % 2) {p=$0}' input_file - but I can't find the way to implement all the necessary transformations in one command.
text-processing awk
edited 5 mins ago
Prvt_Yadv
2,64731027
asked 45 mins ago
Vasily AVasily A
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have a file of the following structure:
#1552342335
ls
#1552342359
date
#1552342380
cat .bash_history
i.e. timestamp followed by a text line. I want to process every timestamp line using shell's date (something like date -d ${1/#/@} '+%F %T'), merge it with the next line and wrap with table tags, i.e. the output would be the following:
<tr> <td>2019-03-11 18:12:15</td> <td><pre>ls</pre></td> </tr>
<tr> <td>2019-03-11 18:12:39</td> <td><pre>date</pre></td> </tr>
<tr> <td>2019-03-11 18:13:00</td> <td><pre>cat .bash_history</pre></td> </tr>
I understand it would be something like awk 'NR % 2 {print | " <something here>" } !(NR % 2) {p=$0}' input_file - but I can't find the way to implement all the necessary transformations in one command.
text-processing awk
edited 5 mins ago
Prvt_Yadv
2,64731027
asked 45 mins ago
Vasily AVasily A
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have a file of the following structure:
#1552342335
ls
#1552342359
date
#1552342380
cat .bash_history
i.e. timestamp followed by a text line. I want to process every timestamp line using shell's date (something like date -d ${1/#/@} '+%F %T'), merge it with the next line and wrap with table tags, i.e. the output would be the following:
<tr> <td>2019-03-11 18:12:15</td> <td><pre>ls</pre></td> </tr>
<tr> <td>2019-03-11 18:12:39</td> <td><pre>date</pre></td> </tr>
<tr> <td>2019-03-11 18:13:00</td> <td><pre>cat .bash_history</pre></td> </tr>
I understand it would be something like awk 'NR % 2 {print | " <something here>" } !(NR % 2) {p=$0}' input_file - but I can't find the way to implement all the necessary transformations in one command.
text-processing awk
edited 5 mins ago
Prvt_Yadv
2,64731027
asked 45 mins ago
Vasily AVasily A
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a file of the following structure:
#1552342335
ls
#1552342359
date
#1552342380
cat .bash_history
i.e. timestamp followed by a text line. I want to process every timestamp line using shell's date (something like date -d ${1/#/@} '+%F %T'), merge it with the next line and wrap with table tags, i.e. the output would be the following:
<tr> <td>2019-03-11 18:12:15</td> <td><pre>ls</pre></td> </tr>
<tr> <td>2019-03-11 18:12:39</td> <td><pre>date</pre></td> </tr>
<tr> <td>2019-03-11 18:13:00</td> <td><pre>cat .bash_history</pre></td> </tr>
I understand it would be something like awk 'NR % 2 {print | " <something here>" } !(NR % 2) {p=$0}' input_file - but I can't find the way to implement all the necessary transformations in one command.
text-processing awk
text-processing awk
edited 5 mins ago
Prvt_Yadv
2,64731027
asked 45 mins ago
Vasily AVasily A
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 5 mins ago
Prvt_Yadv
2,64731027
asked 45 mins ago
Vasily AVasily A
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 5 mins ago
Prvt_Yadv
2,64731027
edited 5 mins ago
Prvt_Yadv
2,64731027
edited 5 mins ago
Prvt_Yadv
2,64731027
2,64731027
asked 45 mins ago
Vasily AVasily A
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 45 mins ago
Vasily AVasily A
1011
asked 45 mins ago
Vasily AVasily A
1011
1011
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Vasily A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Vasily A is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f506005%2fmerge-every-two-lines-after-processing-each-of-them-with-external-shell-command%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Vasily A is a new contributor. Be nice, and check out our Code of Conduct.
Vasily A is a new contributor. Be nice, and check out our Code of Conduct.
Vasily A is a new contributor. Be nice, and check out our Code of Conduct.
Vasily A is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f506005%2fmerge-every-two-lines-after-processing-each-of-them-with-external-shell-command%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
