gnu-coreutils

Suppose that I have two files, en.csv and sp.csv , each containing exactly two comma-separated records: en.csv : 1,dog,red,car 3,cat,white,boat sp.csv : 2,conejo,gris,tren 3,gato,blanco,bote If I execute join -t, -a 1 -a 2 -e MISSING en.csv sp.csv the output I get is: 1,dog,red,car 2,conejo,gris,tren 3,cat,white,boat,gato,blanco,bote Notice that all the missing fields have been collapsed. To get a "proper" full outer join, I need to specify a format; thus join -t, -a 1 -a 2 -e MISSING -o 0,1.2,1.3,1.4,2.2,2.3,2.4 en.csv sp.csv yields 1,dog,red,car,MISSING,MISSING,MISSING 2,MISSING,MISSING

I want to do something like this: cat abcd.txt | cut -f 2,1 and I want the order to be 2 and then 1 in the output. On the machine I am testing (FreeBSD 6), this is not happening (its printing in 1,2 order). Can you tell me how to do this? I know I can always write a shell script to do this reversing, but I am looking for something using the 'cut' command options. I think I am using version 5.2.1 of coreutils containing cut. Lars Haugseth This can't be done using cut . According to the man page: Selected input is written in the same order that it is read, and is written exactly once. Patching

It has been 2 days that I have failed to install coreutils . Last 15 lines from /Users/Mehdi/Library/Logs/Homebrew/coreutils/03.make: src/ginstall -c -m 644 'man/unlink.1' '/usr/local/Cellar/coreutils/8.27/share/man/man1/gunlink.1' src/ginstall -c src/uniq '/usr/local/Cellar/coreutils/8.27/bin/./guniq' src/ginstall -c -m 644 'man/vdir.1' '/usr/local/Cellar/coreutils/8.27/share/man/man1/gvdir.1' src/ginstall -c src/unlink '/usr/local/Cellar/coreutils/8.27/bin/./gunlink' src/ginstall -c src/vdir '/usr/local/Cellar/coreutils/8.27/bin/./gvdir' src/ginstall -c -m 644 'man/wc.1' '/usr/local/Cellar

A command that prints a list of files and folders in the current directory along with their total sizes is du -sh * . That command alone doesn't, however, list hidden files or folders. I found a solution for a command that does correctly list the hidden files and folders along with the rest: du -sh .[!.]* * . Although it works perfectly, the solution was provided as-is, without any explanation. What is the meaning of .[!.]* , exactly? How does it work? It's a globbing pattern that basically tells bash to find all files starting with a . , followed by any character but a . and containing any

I'm working with huge files of (I hope) UTF-8 text. I can reproduce it using Ubuntu 13.10 (3.11.0-14-generic) and 12.04. While investigating a bug I've encountered strange behavoir $ export LC_ALL=en_US.UTF-8 $ sort part-r-00000 | uniq -d ɥ ɨ ɞ ɧ 251 ɨ ɡ ɞ ɭ ɯ 291 ɢ ɫ ɬ ɜ 301 ɪ ɳ 475 ʈ ʂ 565 $ export LC_ALL=C $ sort part-r-00000 | uniq -d $ # no duplicates found The duplicates also appear when running a custom C++ program that reads the file using std::stringstream - it fails due to duplicates when using en_US.UTF-8 locale. C++ seems to be unaffected at least for std::string and input/output.

For example, given: USCAGoleta9311734.5021-120.1287855805 I want to extract just: US Probably the most efficient method, if you're using the bash shell (and you appear to be, based on your comments), is to use the sub-string variant of parameter expansion: pax> long="USCAGol.blah.blah.blah" pax> short="${long:0:2}" ; echo "${short}" US This will set short to be the first two characters of long . If long is shorter than two characters, short will be identical to it. This in-shell method is usually better if you're going to be doing it a lot (like 50,000 times per report as you mention) since

I'm taking a look at the code to the 'less' utility, specifically how it gets keyboard input. Interestingly, on line 80 of ttyin.c, it sets the file descriptor to read from: /* * Try /dev/tty. * If that doesn't work, use file descriptor 2, * which in Unix is usually attached to the screen, * but also usually lets you read from the keyboard. */ #if OS2 /* The __open() system call translates "/dev/tty" to "con". */ tty = __open("/dev/tty", OPEN_READ); #else tty = open("/dev/tty", OPEN_READ); #endif if (tty < 0) tty = 2; Isn't file descriptor 2 stderr? If so, WTH?! I thought keyboard input was

How can 2 unsorted text files of different lengths be display side by side (in columns) in a shell Given one.txt and two.txt : $ cat one.txt apple pear longer line than the last two last line $ cat two.txt The quick brown fox.. foo bar linux skipped a line Display: apple The quick brown fox.. pear foo longer line than the last two bar last line linux skipped a line paste one.txt two.txt almost does the trick but doesn't align the columns nicely as it just prints one tab between column 1 and 2. I know how to this with emacs and vim but want the output displayed to stdout for piping ect. The