How to execute bash script from bash script and react on echo [duplicate]How do I set a variable to the output of a command in Bash?How to compare strings in BashGet the source directory of a Bash script from within the script itselfHow to check if a string contains a substring in BashHow to check if a program exists from a Bash script?How to suppress all output from a command using Bash?How do I tell if a regular file does not exist in Bash?How do I split a string on a delimiter in Bash?How to concatenate string variables in BashReliable way for a Bash script to get the full path to itselfHow to change the output color of echo in LinuxEcho newline in Bash prints literal n
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How to execute bash script from bash script and react on echo [duplicate]
How do I set a variable to the output of a command in Bash?How to compare strings in BashGet the source directory of a Bash script from within the script itselfHow to check if a string contains a substring in BashHow to check if a program exists from a Bash script?How to suppress all output from a command using Bash?How do I tell if a regular file does not exist in Bash?How do I split a string on a delimiter in Bash?How to concatenate string variables in BashReliable way for a Bash script to get the full path to itselfHow to change the output color of echo in LinuxEcho newline in Bash prints literal n
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This question already has an answer here:
How do I set a variable to the output of a command in Bash?
13 answers
How to compare strings in Bash
10 answers
I have a bashscript that checkst the status of a program, if I do "/etc/init.d/checker status" it returns either "running" or "not running".
Now I want to write another bash script that triggers the "/etc/init.d/checker status" thing every x seconds and does something, depending on what the script returns/ echos.
Is this possible with bash, if so, how, or should I use PHP for this?
bash ubuntu
asked Mar 24 at 19:15
EverlikeEverlike
134
marked as duplicate by Charles Duffy bash
Users with the bash badge can single-handedly close bash questions as duplicates and reopen them as needed.
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Mar 24 at 19:24
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:
How do I set a variable to the output of a command in Bash?
13 answers
How to compare strings in Bash
10 answers
I have a bashscript that checkst the status of a program, if I do "/etc/init.d/checker status" it returns either "running" or "not running".
Now I want to write another bash script that triggers the "/etc/init.d/checker status" thing every x seconds and does something, depending on what the script returns/ echos.
Is this possible with bash, if so, how, or should I use PHP for this?
bash ubuntu
asked Mar 24 at 19:15
EverlikeEverlike
134
marked as duplicate by Charles Duffy bash
Users with the bash badge can single-handedly close bash questions as duplicates and reopen them as needed.
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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.
Does it only return a string, or does it also change its exit status? A well-behaved program will be following LSB-defined exit status conventions for itsinit.dscripts, so you don't need to look at the output at all.
– Charles Duffy
Mar 24 at 19:19
It echoes it, does not change exit status.
– Everlike
Mar 24 at 19:21
See refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/… for those:0is for program is running or service is OK;3is for program is not running,1and2are for various kinds of unclean exits -- so if your program isn't honoring that standard, it's buggy, and I'd generally suggest focusing on fixing that bug rather than trying to write other software to work with the current behavior.
– Charles Duffy
Mar 24 at 19:21
Thank you very much!
– Everlike
Mar 24 at 19:22
...that said, if you did want to work with the existing behavior, you could use the practices discussed in How to set a variable to the output of a command in bash (to capture the output), and How to compare strings in bash (to compare it to the values at hand).
– Charles Duffy
Mar 24 at 19:22
add a comment |
This question already has an answer here:
How do I set a variable to the output of a command in Bash?
13 answers
How to compare strings in Bash
10 answers
I have a bashscript that checkst the status of a program, if I do "/etc/init.d/checker status" it returns either "running" or "not running".
Now I want to write another bash script that triggers the "/etc/init.d/checker status" thing every x seconds and does something, depending on what the script returns/ echos.
Is this possible with bash, if so, how, or should I use PHP for this?
bash ubuntu
asked Mar 24 at 19:15
EverlikeEverlike
134
This question already has an answer here:
How do I set a variable to the output of a command in Bash?
13 answers
How to compare strings in Bash
10 answers
I have a bashscript that checkst the status of a program, if I do "/etc/init.d/checker status" it returns either "running" or "not running".
Now I want to write another bash script that triggers the "/etc/init.d/checker status" thing every x seconds and does something, depending on what the script returns/ echos.
Is this possible with bash, if so, how, or should I use PHP for this?
This question already has an answer here:
How do I set a variable to the output of a command in Bash?
13 answers
How to compare strings in Bash
10 answers
bash ubuntu
bash ubuntu
asked Mar 24 at 19:15
EverlikeEverlike
134
asked Mar 24 at 19:15
EverlikeEverlike
134
asked Mar 24 at 19:15
EverlikeEverlike
134
asked Mar 24 at 19:15
EverlikeEverlike
134
asked Mar 24 at 19:15
EverlikeEverlike
134
134
marked as duplicate by Charles Duffy bash
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marked as duplicate by Charles Duffy bash
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Mar 24 at 19:24
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.
Does it only return a string, or does it also change its exit status? A well-behaved program will be following LSB-defined exit status conventions for itsinit.dscripts, so you don't need to look at the output at all.
– Charles Duffy
Mar 24 at 19:19
It echoes it, does not change exit status.
– Everlike
Mar 24 at 19:21
See refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/… for those:0is for program is running or service is OK;3is for program is not running,1and2are for various kinds of unclean exits -- so if your program isn't honoring that standard, it's buggy, and I'd generally suggest focusing on fixing that bug rather than trying to write other software to work with the current behavior.
– Charles Duffy
Mar 24 at 19:21
Thank you very much!
– Everlike
Mar 24 at 19:22
...that said, if you did want to work with the existing behavior, you could use the practices discussed in How to set a variable to the output of a command in bash (to capture the output), and How to compare strings in bash (to compare it to the values at hand).
– Charles Duffy
Mar 24 at 19:22
add a comment |
Does it only return a string, or does it also change its exit status? A well-behaved program will be following LSB-defined exit status conventions for itsinit.dscripts, so you don't need to look at the output at all.
– Charles Duffy
Mar 24 at 19:19
It echoes it, does not change exit status.
– Everlike
Mar 24 at 19:21
See refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/… for those:0is for program is running or service is OK;3is for program is not running,1and2are for various kinds of unclean exits -- so if your program isn't honoring that standard, it's buggy, and I'd generally suggest focusing on fixing that bug rather than trying to write other software to work with the current behavior.
– Charles Duffy
Mar 24 at 19:21
Thank you very much!
– Everlike
Mar 24 at 19:22
...that said, if you did want to work with the existing behavior, you could use the practices discussed in How to set a variable to the output of a command in bash (to capture the output), and How to compare strings in bash (to compare it to the values at hand).
– Charles Duffy
Mar 24 at 19:22
Does it only return a string, or does it also change its exit status? A well-behaved program will be following LSB-defined exit status conventions for its
init.d scripts, so you don't need to look at the output at all.– Charles Duffy
Mar 24 at 19:19
Does it only return a string, or does it also change its exit status? A well-behaved program will be following LSB-defined exit status conventions for its
init.d scripts, so you don't need to look at the output at all.– Charles Duffy
Mar 24 at 19:19
It echoes it, does not change exit status.
– Everlike
Mar 24 at 19:21
It echoes it, does not change exit status.
– Everlike
Mar 24 at 19:21
See refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/… for those:
0 is for program is running or service is OK; 3 is for program is not running, 1 and 2 are for various kinds of unclean exits -- so if your program isn't honoring that standard, it's buggy, and I'd generally suggest focusing on fixing that bug rather than trying to write other software to work with the current behavior.– Charles Duffy
Mar 24 at 19:21
See refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/… for those:
0 is for program is running or service is OK; 3 is for program is not running, 1 and 2 are for various kinds of unclean exits -- so if your program isn't honoring that standard, it's buggy, and I'd generally suggest focusing on fixing that bug rather than trying to write other software to work with the current behavior.– Charles Duffy
Mar 24 at 19:21
Thank you very much!
– Everlike
Mar 24 at 19:22
Thank you very much!
– Everlike
Mar 24 at 19:22
...that said, if you did want to work with the existing behavior, you could use the practices discussed in How to set a variable to the output of a command in bash (to capture the output), and How to compare strings in bash (to compare it to the values at hand).
– Charles Duffy
Mar 24 at 19:22
...that said, if you did want to work with the existing behavior, you could use the practices discussed in How to set a variable to the output of a command in bash (to capture the output), and How to compare strings in bash (to compare it to the values at hand).
– Charles Duffy
Mar 24 at 19:22
add a comment |
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Does it only return a string, or does it also change its exit status? A well-behaved program will be following LSB-defined exit status conventions for its
init.dscripts, so you don't need to look at the output at all.– Charles Duffy
Mar 24 at 19:19
It echoes it, does not change exit status.
– Everlike
Mar 24 at 19:21
See refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/… for those:
0is for program is running or service is OK;3is for program is not running,1and2are for various kinds of unclean exits -- so if your program isn't honoring that standard, it's buggy, and I'd generally suggest focusing on fixing that bug rather than trying to write other software to work with the current behavior.– Charles Duffy
Mar 24 at 19:21
Thank you very much!
– Everlike
Mar 24 at 19:22
...that said, if you did want to work with the existing behavior, you could use the practices discussed in How to set a variable to the output of a command in bash (to capture the output), and How to compare strings in bash (to compare it to the values at hand).
– Charles Duffy
Mar 24 at 19:22