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Unzip multiple files. Linux

Operating systems : Linux

Unzip multiple zip files into one directory by Linux command line unzip. Contrary to possible expectations, "unzip *.zip" is not going to work, *.zip should be put into quotes:

unzip "*.zip"

There may be files with the same names in these archives. To avoid overwriting:

unzip -B "*.zip"

"Unzip -B" makes unzip to overwrite duplicates during extraction process, but saving a backup copy of each overwritten file. The names for these backup copy files are created by adding tilde ("~") at the end of the original names of the files. If a file extension is present, then "~" is added after it. If that is not enough, unique sequence number (up to 5 digits) is appended after the "~".

"Unzip -B" is not too practical. For example, since when the sequence number range for numbered backup files gets exhausted (99999, or 65535 for 16-bit systems), the backup file with the maximum sequence number is deleted and replaced by the new backup version without notice ( More on the subject ). The number of files in an archive may not be always known in advance or may be more than possible sequence number range, so "Unzip -B" is not a great choice. Renaming duplicate files by adding "~" at the end of their names, after the extension, is not too convenient either.

But another built-in option is even worse. If the "-B" modifier is not used, each time a file with same name as there already unpacked is being extracted, unzip asks "replace example.txt? [y]es, [n]o, [A]ll, [N]one, [r]ename:". And each time "r" must be hit, then a new name has to be input. So some bash or another script solving the problem should probably be prepared and used instead.


Aliosque subditos et thema

 

Selecting all in mc

 

Selecting all files and folders in a directory viewed in a panel of Midnight Commander. Achieving the same effect a does Ctrl - A under Microsoft Windows or Cmd - A in Mac OS X: Open a directory --> Ctrl - Shift - = --> Enter * [asterisk] --> Enter A directory with files and folders Selection options prompt Entering * [asterisk] All files and folders has been selected The keyboard shortcut of Ctrl - Shift - = is meant to type plus symbol. So just Shift - = may also happen to be enough. The "Using shell patterns" option in selection options prompt has to be checked on in order to make asterisk to work as the symbol for "all" or "any".

Arachne web browser. Installing and setting up for internet connection via Ethernet

 

A : Installing Arachne web browser on a disk created in RAM - Arachne runs the fastest this way. RAM size should allow for a RAM disk of 6 MB or more. In order to install and set up Arachne web browser for internet connection via Ethernet, there have to be several programs at hand: 1. Arachne web browser [ Download ] 2. If Arachne web browser is to be used for surfing web pages with character encoding other than Latin for West European languages, visit www.glennmcc.org/apm/ to find available character set packages and download the necessary one. 3. Mouse driver, mouse.com for instance [ Download ] 4. Packet driver for Ethernet network card: http://www.crynwr.com/drivers/ http://www.georgpotthast.de/sioux/packet.htm 5. Microsoft Network Client 3.0 [ Download ] 6. NDIS 2.0 driver for Ethernet network card. For example: Realtek RTL8029AS [ Download ]. Drivers for other network cards may be found, for instance, on web sites of Ethernet cards manufacturers. 7. Archivers. For example, PKZIP [ Download ] and PKUNZIP [ Download ] 8. If it is not MS-DOS 6.0+ to be used, QEMM97 [ Download ] 9. If it is not MS-DOS 6.0+ to be used, TDSK [ Download ] Installing and setting up Arachne web browser, step by step: 1. Create a RAM disk. Which drive letter will be assigned to it comes from the assumption that A: and B: go to floppy drives (even if there is only one, both letters will be reserved anyway), C: goes to the first active primary MS-DOS partition on the first physical hard disk. If there are more disks, then there will be as many letters used consecutively as to name them all. Unless there are no devices installed using DRIVER.SYS or similar drivers, the next drive letter will be assigned to the RAM disk. In order to be sure, after having the relevant string for making RAM disk added to CONFIG.SYS (See below), computer could be restarted and what letter is assigned to the RAM disk checked by experiment. In this case, it is E: Depending on RAM size it needs to be decided how many megabytes can be reserved for RAM disk. Basically, the more the better. Since, for instance, web browser cache is going to swell during prolonged and intensive use within a session. In this example the RAM disk is 12 000 KB. The maximum size for RAMDRIVE.SYS MS-DOS driver is 32 767 KB, the one of TDSK - 64 MB. In order to create such a disk, the string has to be added somewhere in the middle of CONFIG.SYS as follows: DEVICE=C:\DOS\RAMDRIVE.SYS 12000 512 512 /E 2. Create a folder, for example C:\DRIVERS\. Put there: a mouse driver, for instance mouse.com, a packet driver for Ethernet network card and a NDIS 2.0 driver for Ethernet network card. 3. Add a string starting mouse driver to AUTOEXEC.BAT. Specify there the full path to the driver, may be any: LH C:\DRIVERS\MOUSE.COM 4. Prepare installation floppies of Microsoft Network Client 3.0: DSK3-1.EXE -d A: DSK3-2.EXE -d A: 5. Start setup.exe from the first floppy and begin Microsoft Network Client 3.0 installation. Installation is starting. Press Enter to continue Select folder for Microsoft Network Client 3.0 to be installed to. It may be any or the suggestion of the installer may be left as it is - in the case discussed it is left as it is.