Using sed to replace a character before another character in a line
0
I try to use sed or whatever to replace a number of a line /opt/tin/toss to become a *
For example
37 7 * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Output:
37 * * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Normally, 7 generates randomly, It can be 2, 4 or 8, running from 0-24.
Could anyone please help me? Thank you.
shell-script
asked 16 mins ago
Quang NgôQuang Ngô
1
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0
I try to use sed or whatever to replace a number of a line /opt/tin/toss to become a *
For example
37 7 * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Output:
37 * * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Normally, 7 generates randomly, It can be 2, 4 or 8, running from 0-24.
Could anyone please help me? Thank you.
shell-script
asked 16 mins ago
Quang NgôQuang Ngô
1
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Replace whole line using sed.
– Prvt_Yadv
13 mins ago
I don't understand what you want. I guess you want to modify the line that contains/opt/tin/toss. What change do you want to make? Do you want to change the second field, the second number, the third digit, or what? What do you mean by "7 generates randomly, It can be 2, 4 or 8, running from 0-24"?
– G-Man
2 mins ago
add a comment |
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I try to use sed or whatever to replace a number of a line /opt/tin/toss to become a *
For example
37 7 * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Output:
37 * * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Normally, 7 generates randomly, It can be 2, 4 or 8, running from 0-24.
Could anyone please help me? Thank you.
shell-script
asked 16 mins ago
Quang NgôQuang Ngô
1
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I try to use sed or whatever to replace a number of a line /opt/tin/toss to become a *
For example
37 7 * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Output:
37 * * * * /opt/tin/toss
43 7 * * * /opt/tin/te1
58 7 * * * /opt/tin/test2
Normally, 7 generates randomly, It can be 2, 4 or 8, running from 0-24.
Could anyone please help me? Thank you.
shell-script
shell-script
asked 16 mins ago
Quang NgôQuang Ngô
1
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 16 mins ago
Quang NgôQuang Ngô
1
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 16 mins ago
Quang NgôQuang Ngô
1
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 16 mins ago
Quang NgôQuang Ngô
1
asked 16 mins ago
Quang NgôQuang Ngô
1
1
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Quang Ngô is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Replace whole line using sed.
– Prvt_Yadv
13 mins ago
I don't understand what you want. I guess you want to modify the line that contains/opt/tin/toss. What change do you want to make? Do you want to change the second field, the second number, the third digit, or what? What do you mean by "7 generates randomly, It can be 2, 4 or 8, running from 0-24"?
– G-Man
2 mins ago
add a comment |
Replace whole line using sed.
– Prvt_Yadv
13 mins ago
I don't understand what you want. I guess you want to modify the line that contains/opt/tin/toss. What change do you want to make? Do you want to change the second field, the second number, the third digit, or what? What do you mean by "7 generates randomly, It can be 2, 4 or 8, running from 0-24"?
– G-Man
2 mins ago
Replace whole line using sed.
– Prvt_Yadv
13 mins ago
Replace whole line using sed.
– Prvt_Yadv
13 mins ago
I don't understand what you want. I guess you want to modify the line that contains
/opt/tin/toss. What change do you want to make? Do you want to change the second field, the second number, the third digit, or what? What do you mean by "7 generates randomly, It can be 2, 4 or 8, running from 0-24"?– G-Man
2 mins ago
I don't understand what you want. I guess you want to modify the line that contains
/opt/tin/toss. What change do you want to make? Do you want to change the second field, the second number, the third digit, or what? What do you mean by "7 generates randomly, It can be 2, 4 or 8, running from 0-24"?– G-Man
2 mins ago
add a comment |
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Replace whole line using sed.
– Prvt_Yadv
13 mins ago
I don't understand what you want. I guess you want to modify the line that contains
/opt/tin/toss. What change do you want to make? Do you want to change the second field, the second number, the third digit, or what? What do you mean by "7 generates randomly, It can be 2, 4 or 8, running from 0-24"?– G-Man
2 mins ago