sin
a25a57f6ac
tail: Add rudimentary support to detect file truncation
We cannot in general detect that truncation happened. At the moment we use a heuristic to compare the file size before and after a write happened. If the new file size is smaller than the old, we correctly handle truncation and dump the entire file to stdout. If it so happened that the new size is larger or equal to the old size after the file had been truncated without any reads in between, we will assume the data was appended to the file. There is no known way around this other than using inotify or kevent which is outside the scope of sbase.
sbase - suckless unix tools =========================== sbase is a collection of unix tools that are inherently portable across UNIX and UNIX-like systems. The following tools are implemented ('*' == finished, '#' == UTF-8 support, '=' == implicit UTF-8 support): UTILITY POSIX 2008 COMPLIANT MISSING OPTIONS ------- -------------------- --------------- =* basename yes none =* cal yes none =* cat yes none = chgrp no -h, -H, -L, -P =* chmod yes none = chown no -h, -H, -L, -P =* chroot non-posix none =* cksum yes none =* cmp yes none #* cols non-posix none =* comm yes none = cp no -H, (-i), -L =* cron non-posix none #* cut yes none =* date yes none =* dirname yes none = du no -H, -L, (-x) =* echo yes none =* env yes none #* expand yes none =* expr yes none =* false yes none #* fold yes none =* grep yes none =* head yes none =* hostname non-posix none =* kill yes none =* link yes none =* ln yes none =* logger yes none =* logname yes none = ls no -C, -R, -q, -u =* md5sum non-posix none =* mkdir yes none =* mkfifo yes none =* mktemp non-posix none =* mv yes none (-i) =* nice yes none = nl no -d, -f, -h, -l, -n, -p, -v, -w =* nohup yes none #* paste yes none =* printenv non-posix none printf stolen stolen =* pwd yes none = readlink non-posix -e, -m =* renice yes none =* rm yes none (-i) =* rmdir yes none =* setsid non-posix none =* sleep yes none sort no -m, -o, -d, -f, -i =* split yes none =* sponge non-posix none strings no -a, -n, -t =* sync non-posix none = tail no -c, -f =* tar non-posix none =* tee yes none test yes none =* touch yes none #* tr yes none =* true yes none =* tty yes none =* uname yes none #* unexpand yes none = uniq no -f, -s =* unlink yes none = uudecode no -o = uuencode no -m seq non-posix none = sha1sum non-posix none = sha256sum non-posix none = sha512sum non-posix none #* wc yes none = xargs no -I, -L, -p, -s, -t, -x =* yes non-posix none The complement of sbase is ubase[1] which is Linux-specific and provides all the non-portable tools. Together they are intended to form a base system similar to busybox but much smaller and suckless. Building -------- To build sbase, simply type make. You may have to fiddle with config.mk depending on your system. You can also build sbase-box, which generates a single binary containing all the required tools. You can then symlink the individual tools to sbase-box. Ideally you will want to statically link sbase. If you are on Linux we recommend using musl-libc[2]. Portability ----------- sbase has been compiled on a variety of different operating systems, including Linux, *BSD, OSX, Haiku, Solaris, SCO OpenServer and others. Various combinations of operating systems and architectures have also been built. You can build sbase with gcc, clang, tcc, nwcc and pcc. [1] http://git.suckless.org/ubase/ [2] http://www.musl-libc.org/
Description
Languages
C
79.5%
Roff
16%
Shell
1.9%
Awk
1.3%
Makefile
1.3%