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Read MANIFEST.MF of a jar from shell

How to read MANIFEST.MF file from JAR using BashWhat is the proper way to parse the entries of a manifest.mf file in jar?Unwrapping a java manifest file fin bashCheck if a directory exists in a shell scriptGet the source directory of a Bash script from within the script itselfCreate ArrayList from arrayHow do I prompt for Yes/No/Cancel input in a Linux shell script?How do I read / convert an InputStream into a String in Java?How can I create an executable JAR with dependencies using Maven?How to check if a program exists from a Bash script?In the shell, what does “ 2>&1 ” mean?Check existence of input argument in a Bash shell scriptHow to copy a folder from remote to local using scp?

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1

I know how I can find and unzip the MANIFEST.MF from a jar:

https://stackoverflow.com/a/7066174/927493

But MANIFEST.MF has special formatting rules. Reading a "property" is harder than reading it from as "standard" property file because values may have line breaks.

What is a robust way to read a given property (like Implementation-URL) from a MANIFEST.MF using command line?

EDIT: I added an example. The broken lines seem to start with a space, but I haven't found a specification yet.

Build-Jdk: 1.8.0_161
Implementation-URL: http://ik-rep2.continentale.loc:8081/nexus/conten
 t/sites/site/de.something/release-plugin-ear/0.1.5-SN
 APSHOT/release-plugin-ear

java bash shell manifest.mf

share|improve this question

edited Mar 27 at 10:34

JF Meier

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you checked What is the proper way to parse the entries of a manifest.mf file in jar??
  
  – ernest_k
  Mar 27 at 10:01
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ernest_k This is interesting, but it talks about reading it from Java, not from a command line.
  
  – JF Meier
  Mar 27 at 10:05
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  this?
  
  – Eugene
  Mar 27 at 10:19
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Could you give a sample input that includes an example of line breaking property ? Could you confirm that line breaking properties always begin their new lines with a space as shown in Eugene's link ?
  
  – Aserre
  Mar 27 at 10:25
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @JFMeier Specification says: No line may be longer than 72 bytes (not characters), in its UTF8-encoded form. If a value would make the initial line longer than this, it should be continued on extra lines (each starting with a single SPACE).
  
  – Würgspaß
  Mar 27 at 11:23
  

  
  
  
  

add a comment | 

1

I know how I can find and unzip the MANIFEST.MF from a jar:

https://stackoverflow.com/a/7066174/927493

But MANIFEST.MF has special formatting rules. Reading a "property" is harder than reading it from as "standard" property file because values may have line breaks.

What is a robust way to read a given property (like Implementation-URL) from a MANIFEST.MF using command line?

EDIT: I added an example. The broken lines seem to start with a space, but I haven't found a specification yet.

Build-Jdk: 1.8.0_161
Implementation-URL: http://ik-rep2.continentale.loc:8081/nexus/conten
 t/sites/site/de.something/release-plugin-ear/0.1.5-SN
 APSHOT/release-plugin-ear

java bash shell manifest.mf

share|improve this question

edited Mar 27 at 10:34

JF Meier

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you checked What is the proper way to parse the entries of a manifest.mf file in jar??
  
  – ernest_k
  Mar 27 at 10:01
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @ernest_k This is interesting, but it talks about reading it from Java, not from a command line.
  
  – JF Meier
  Mar 27 at 10:05
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  this?
  
  – Eugene
  Mar 27 at 10:19
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Could you give a sample input that includes an example of line breaking property ? Could you confirm that line breaking properties always begin their new lines with a space as shown in Eugene's link ?
  
  – Aserre
  Mar 27 at 10:25
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @JFMeier Specification says: No line may be longer than 72 bytes (not characters), in its UTF8-encoded form. If a value would make the initial line longer than this, it should be continued on extra lines (each starting with a single SPACE).
  
  – Würgspaß
  Mar 27 at 11:23
  

  
  
  
  

add a comment | 

I know how I can find and unzip the MANIFEST.MF from a jar:

https://stackoverflow.com/a/7066174/927493

But MANIFEST.MF has special formatting rules. Reading a "property" is harder than reading it from as "standard" property file because values may have line breaks.

What is a robust way to read a given property (like Implementation-URL) from a MANIFEST.MF using command line?

EDIT: I added an example. The broken lines seem to start with a space, but I haven't found a specification yet.

Build-Jdk: 1.8.0_161
Implementation-URL: http://ik-rep2.continentale.loc:8081/nexus/conten
 t/sites/site/de.something/release-plugin-ear/0.1.5-SN
 APSHOT/release-plugin-ear

java bash shell manifest.mf

share|improve this question

edited Mar 27 at 10:34

JF Meier

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

Build-Jdk: 1.8.0_161
Implementation-URL: http://ik-rep2.continentale.loc:8081/nexus/conten
 t/sites/site/de.something/release-plugin-ear/0.1.5-SN
 APSHOT/release-plugin-ear

share|improve this question

edited Mar 27 at 10:34

JF Meier

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

share|improve this question

edited Mar 27 at 10:34

JF Meier

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

asked Mar 27 at 9:59

JF MeierJF Meier

11.9k55 gold badges3232 silver badges7171 bronze badges

1 Answer
1

active

oldest

votes

1

Using Eugene's link, you could start by properly formating your manifest.mf file, then pipe the formatted output to awk to extract the value of the property you need :

perl -0777 -wpe 's/n //g' MANIFEST.MF | awk '/PROPERTY/print $2' 

share|improve this answer

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges

add a comment | 

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1

Using Eugene's link, you could start by properly formating your manifest.mf file, then pipe the formatted output to awk to extract the value of the property you need :

perl -0777 -wpe 's/n //g' MANIFEST.MF | awk '/PROPERTY/print $2' 

share|improve this answer

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges

add a comment | 

1

Using Eugene's link, you could start by properly formating your manifest.mf file, then pipe the formatted output to awk to extract the value of the property you need :

perl -0777 -wpe 's/n //g' MANIFEST.MF | awk '/PROPERTY/print $2' 

share|improve this answer

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges

add a comment | 

Using Eugene's link, you could start by properly formating your manifest.mf file, then pipe the formatted output to awk to extract the value of the property you need :

perl -0777 -wpe 's/n //g' MANIFEST.MF | awk '/PROPERTY/print $2' 

share|improve this answer

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges

perl -0777 -wpe 's/n //g' MANIFEST.MF | awk '/PROPERTY/print $2' 

share|improve this answer

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges

answered Mar 27 at 10:48

AserreAserre

3,48933 gold badges2222 silver badges4545 bronze badges