At present, only the Amiga port of Zip is capable of adjusting or updating these without corrupting them. This option is only useful when updating an existing archive, and the file system containing this old archive does not have enough space to hold both old and new archives at the same time. File operations adding, updating are done first, and the user is then prompted for a one-line comment for each file.
Enter the comment followed by return, or just return for no comment. Note that shell pathname expansion has been inhibited with backslashes, so that zip can see the asterisks, enabling zip to match on the contents of the zip archive instead of the contents of the current directory.
Under systems where the shell does not expand wildcards, such as MSDOS, the backslashes are not needed. Good for exporting files to foreign operating-systems. Resource-forks will be ignored at all. Directory entries are created by default so that their attributes can be saved in the zip archive. The password prompt is repeated to save the user from typing errors. For example: Tag Description zip -f foo This command should be run from the same directory from which the original zip command was run, since paths stored in zip archives are always relative.
Note that the timezone environment variable TZ should be set according to the local timezone in order for the -f , -u and -o options to work correctly. The reasons behind this are somewhat subtle but have to do with the differences between the Unix-format file times always in GMT and most of the other operating systems always local time and the necessity to compare the two.
This option can be used if some portions of the archive are missing. It is not guaranteed to work, so you MUST make a backup of the original archive first. When doubled as in -FF the compressed sizes given inside the damaged archive are not trusted and zip scans for special signatures to identify the limits between the archive members. The single -F is more reliable if the archive is not too much damaged, for example if it has only been truncated, so try this option first.
Neither option will recover archives that have been incorrectly transferred in ascii mode instead of binary. After the repair, the -t option of unzip may show that some files have a bad CRC.
Such files cannot be recovered; you can remove them from the archive using the -d option of zip. If this operation fails, zip attempts to restore the archive to its original state. If the restoration fails, the archive might become corrupted. The backslash avoids the shell filename substitution, so that the name matching is performed by zip at all directory levels.
Not escaping wildcards on shells that do wildcard substitution before zip gets the command line may seem to work but files in subdirectories matching the pattern will never be checked and so not matched. For shells, such as Win32 command prompts, that do not replace file patterns containing wildcards with the respective file names, zip will do the recursion and escaping the wildcards is not needed.
Also possible: Tag Description zip -r foo. When used, zip will not consider Image files eg. By default, zip will store the full path relative to the current path.
The complete path including volume will be stored. By default the relative path will be stored. This option should not be used on binary files. This ensures that unzip -a on Unix will get back an exact copy of the original file, to undo the effect of zip -l. See the note on binary detection for -ll below. This option should not be used on binary files and a warning will be issued when a file is converted that later is detected to be binary.
In Zip 2. This allows unzip -a to convert these files. If a directory becomes empty after removal of the files, the directory is also removed. No deletions are done until zip has created the archive without error. This is useful for conserving disk space, but is potentially dangerous so it is recommended to use it in combination with -T to test the archive before removing all input files.
The suffixes are separated by either colons or semicolons. For example: Tag Description zip -rn. By default, zip does not compress files with extensions in the list. Such files are stored directly in the output archive. They can be restored by using the -N option of unzip. If -c is used also, you are prompted for comments only for those files that do not have filenotes. This can be used without any other operations, if desired. For example: Tag Description zip -o foo will change the last modified time of foo.
Many multi-user operating systems provide ways for any user to see the current command line of any other user; even on stand-alone systems there is always the threat of over-the-shoulder peeking. Storing the plaintext password as part of a command line in an automated script is even worse.
Whenever possible, use the non-echoing, interactive prompt to enter passwords. And where security is truly important, use strong encryption such as Pretty Good Privacy instead of the relatively weak encryption provided by standard zipfile utilities.
Useful, for example, in shell scripts and background tasks. If you wish to include only a specific subset of the files in directory foo and its subdirectories, use the -i option to specify the pattern of files to be included.
You should not use -r with the name ". The ISO date format yyyy-mm-dd is also accepted. For example: Tag Description zip -rt infamy foo zip -rt infamy foo will add all the files in foo and its subdirectories that were last modified on or after 7 December , to the zip archive infamy.
To unzip that file, use: tar -zxvf myfile. Or use tar jcvf file. I downvoted your answer because the question is about how to deal with zip archives not tar files. Starfish, that's certainly within your rights, thanks for at least explaining why, so many people don't take the time to do that :- I took "zip" in the more generic sense compression rather than a specific format, so I'll make that more clear. Be aware that tar archives may not work correctly when moving between different platforms, mac to linux or vice versa.
Zip is much safer, as it works correctly on all systems. I suppose technically this is gzip, so that's fine. I guess. Pretty obviously not what the question asked for though. If you don't have zip and unzip packages installed and you have java, you can use jar to unzip: jar -xf file. Not my server, no unzip, zip, 7z, nothing And this worked. This is a great tip. We need jdk in advance to execute this command. Compressing: 7za a archive.
If you want to use the same compression algorithm with your tarballs, use the -J switch with tar : tar cJf archive. Bob 1 1 silver badge 12 12 bronze badges.
I should perhaps append this answer with atool , it's a nice little tool that makes using many different compressors more comfortable. Bind that to a and creating an archive becomes a arc. Starfish Starfish 3 3 silver badges 12 12 bronze badges.
I know this is an old thread but this is the best answer. Doesn't talk about 7z or tar, its concise and straight to the point — Kyle. BSD Tar can also do this bsdtar -a -c -f sunday. Zombo Zombo 5, 5 5 gold badges 39 39 silver badges 58 58 bronze badges.
BSD tar has the benefit of supporting quite a few additional compression formats compared to GNU tar and other tar s. The greatest benefit is, perhaps, that it does so while using a tar -like syntax. You can surely use 7z , unrar , unzip , etc from the commandline, but they use a different syntax.
Prajwal Dhatwalia 1 1 gold badge 7 7 silver badges 10 10 bronze badges. Does pax support zip archives? Nope and it doesn't support pax archives either! This covers only extraction.
Stephen Kitt k 45 45 gold badges silver badges bronze badges. JackLeo JackLeo 2 2 silver badges 14 14 bronze badges. Let's say I modified the files Foo. Let's say I create a file called modified-files. How to add files to the existing zip archive, instead of creating a new zip archive.
If this operation fails, zip attempts to restore the archive to its original state. If the restoration fails, the archive might become corrupted. This option is ignored when there's no existing archive or when at least one zip archive member must be updated or deleted. Here we will will add new files to the same zip archive. You can also list zip archive contents without unzip to directory using -sf.
For instance you have a requirement to check if a file exists in the archive so without unzip to directory you can list the zip file contents on the output and use additional regex and tools to grep the file you are looking for.
By default when we create a zip archive, it stores the relative path for the archived content. Lets take this Linux zip command example which stores the relative path of files:. So to create a zip file in Linux without complete path and only store the filename in zip archive, we use -j or --junk-paths. This will create a zip archive without relative path of the files and store just the name of file junk the path , and do not store directory names.
For Example:. This is useful for conserving disk space, but is potentially dangerous so it is recommended to use it in combination with -T to test the archive before you make zip delete original files after archiving. In this we create a zip archive, and then delete the original files are we zip the folder. So as expected the original files are deleted from the source location after archiving. When we zip a folder, the default zip compression level is We will perform basic compression and monitor the time difference.
We increase the compression level to -9 and create a zip folder which is considered as the highest or maximum compression level. Now with higher level of compression, zip took additional 3 seconds to complete the compression but we only save 1MB overall in our archive so the advantage was not very high compared to the time we invested. You can also copy files from one zip archive to another using -U or --copy-entries argument without extracting. Also requires the --out option to specify a different output file than the input archive.
Here in this Linux zip command example we copy files between two zip archives, I have an input archive with below content. If no input files appear on the command line and --out is used, copy mode is assumed:.
In Linux zip directory and using -d or --delete directive you can delete or remove files from zip archive. So to remove files from zip archive , I will remove two files from the existing zip archive without unzip to directory.
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