linux下安装完成oracle数据库后，在命令行下通过sqlplus /nolog进入sql命令行，然后发现命令行下各种不爽。回退键不好使，方向键不好使，找回历史命令不好使，只能手动输入，输错了，需要通过按住ctrl+backspace才能删除错误输入，解决办法就是安装rlwrap-0.42,下载rlwrap-0.42.tar.gz,解压，进入rlwrap-0.42目录。开始安装。

[root@pushtest oracle]# cd rlwrap-0.42
[root@pushtest rlwrap-0.42]# ls
aclocal.m4  autom4te.cache  ChangeLog    config.h     config.log     configure     COPYING  filters  Makefile     Makefile.in  PLEA    src       test  tools
AUTHORS     BUGS            completions  config.h.in  config.status  configure.ac  doc      INSTALL  Makefile.am  NEWS         README  stamp-h1  TODO
[root@pushtest rlwrap-0.42]# ./configure 
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether make sets $(MAKE)... (cached) yes
checking whether build environment is sane... yes
checking for style of include used by make... GNU
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking for gcc... (cached) gcc
checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to accept ISO C89... (cached) none needed
checking dependency style of gcc... (cached) gcc3
checking how to run the C preprocessor... gcc -E
checking for perl... /usr/bin/perl
checking for strip... strip
checking for ANSI C header files... (cached) yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking errno.h usability... yes
checking errno.h presence... yes
checking for errno.h... yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking libutil.h usability... no
checking libutil.h presence... no
checking for libutil.h... no
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking sched.h usability... yes
checking sched.h presence... yes
checking for sched.h... yes
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking for sys/wait.h... (cached) yes
checking sys/resource.h usability... yes
checking sys/resource.h presence... yes
checking for sys/resource.h... yes
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking termios.h usability... yes
checking termios.h presence... yes
checking for termios.h... yes
checking for unistd.h... (cached) yes
checking for stdint.h... (cached) yes
checking time.h usability... yes
checking time.h presence... yes
checking for time.h... yes
checking getopt.h usability... yes
checking getopt.h presence... yes
checking for getopt.h... yes
checking regex.h usability... yes
checking regex.h presence... yes
checking for regex.h... yes
checking curses.h usability... yes
checking curses.h presence... yes
checking for curses.h... yes
checking termcap.h usability... yes
checking termcap.h presence... yes
checking for termcap.h... yes
checking for term.h... yes
checking for ncurses/term.h... yes
checking argument type of tputs putc function... int
checking whether your getopt() correctly understands double colons in option string... yes
checking for an ANSI C-conforming const... yes
checking for pid_t... yes
checking whether time.h and sys/time.h may both be included... yes
checking whether gcc needs -traditional... no
checking return type of signal handlers... void
checking for getopt_long... yes
checking for getopt_long... (cached) yes
checking for isastream... yes
checking for mkstemps... yes
checking for pselect... yes
checking for putenv... yes
checking for readlink... yes
checking for sched_yield... yes
checking for setenv... yes
checking for setitimer... yes
checking for setsid... yes
checking for setrlimit... yes
checking for sigaction... yes
checking for snprintf... yes
checking for strlcpy... no
checking for strlcat... no
checking for strnlen... yes
checking for system... yes
checking for openpty in -lutil... yes
checking for openpty... yes
checking for getpty... no
checking for grantpt... yes
checking for unlockpt... yes
checking for getpt... yes
checking for pty/tty type... checking pty.h usability... yes
checking pty.h presence... yes
checking for pty.h... yes
OPENPTY
configure: checking for pty ranges...
checking for tgetent... no
checking for tgetent in -ltinfo... yes
checking for readline in -lreadline... yes
checking for tigetnum... yes
checking readline/readline.h usability... yes
checking readline/readline.h presence... yes
checking for readline/readline.h... yes
checking whether your readline headers know about rl_set_screen_size... yes
checking whether your readline library knows about rl_set_screen_size... checking for rl_set_screen_size... yes
checking whether your readline knows about rl_variable_value... yes
checking whether your readline knows about rl_readline_version... yes
Will rlwrap find command's working directory under /proc/<commands pid>/cwd? let's see...
checking for /proc/20169/cwd/configure.ac... yes
checking whether we can find command line under <opt_proc_mountpoint>/<pid>/cmdline and mirror it by overwriting our own *argv... yes


configure: creating ./config.status
config.status: creating Makefile
config.status: creating filters/Makefile
config.status: creating doc/Makefile
config.status: creating src/Makefile
config.status: creating doc/rlwrap.man
config.status: creating config.h
config.status: config.h is unchanged
config.status: executing depfiles commands

Now do:
    make (or gmake)  to build rlwrap
    make check       for instructions how to test it
    make install     to install it

[root@pushtest rlwrap-0.42]# make 
make  all-recursive
make[1]: Entering directory `/home/oracle/rlwrap-0.42'
Making all in doc
make[2]: Entering directory `/home/oracle/rlwrap-0.42/doc'
sed -e 's#@DATADIR@#/usr/local/share#'  rlwrap.man > rlwrap.1
make[2]: Leaving directory `/home/oracle/rlwrap-0.42/doc'
Making all in src
make[2]: Entering directory `/home/oracle/rlwrap-0.42/src'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/home/oracle/rlwrap-0.42/src'
Making all in filters
make[2]: Entering directory `/home/oracle/rlwrap-0.42/filters'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/home/oracle/rlwrap-0.42/filters'
make[2]: Entering directory `/home/oracle/rlwrap-0.42'
make[2]: Leaving directory `/home/oracle/rlwrap-0.42'
make[1]: Leaving directory `/home/oracle/rlwrap-0.42'
[root@pushtest rlwrap-0.42]# make install
Making install in doc
make[1]: Entering directory `/home/oracle/rlwrap-0.42/doc'
make[2]: Entering directory `/home/oracle/rlwrap-0.42/doc'
make[2]: Nothing to be done for `install-exec-am'.
test -z "/usr/local/share/man/man1" || /bin/mkdir -p "/usr/local/share/man/man1"
 /usr/bin/install -c -m 644 rlwrap.1 '/usr/local/share/man/man1'
make[2]: Leaving directory `/home/oracle/rlwrap-0.42/doc'
make[1]: Leaving directory `/home/oracle/rlwrap-0.42/doc'
Making install in src
make[1]: Entering directory `/home/oracle/rlwrap-0.42/src'
make[2]: Entering directory `/home/oracle/rlwrap-0.42/src'
test -z "/usr/local/bin" || /bin/mkdir -p "/usr/local/bin"
  /usr/bin/install -c rlwrap '/usr/local/bin'
make[2]: Nothing to be done for `install-data-am'.
make[2]: Leaving directory `/home/oracle/rlwrap-0.42/src'
make[1]: Leaving directory `/home/oracle/rlwrap-0.42/src'
Making install in filters
make[1]: Entering directory `/home/oracle/rlwrap-0.42/filters'
make[2]: Entering directory `/home/oracle/rlwrap-0.42/filters'
make[2]: Nothing to be done for `install-exec-am'.
test -z "/usr/local/share/man/man3" || /bin/mkdir -p "/usr/local/share/man/man3"
 /usr/bin/install -c -m 644 RlwrapFilter.3pm '/usr/local/share/man/man3'
make[2]: Leaving directory `/home/oracle/rlwrap-0.42/filters'
make[1]: Leaving directory `/home/oracle/rlwrap-0.42/filters'
make[1]: Entering directory `/home/oracle/rlwrap-0.42'
make[2]: Entering directory `/home/oracle/rlwrap-0.42'
make[2]: Nothing to be done for `install-exec-am'.
test -z "/usr/local/share/rlwrap" || /bin/mkdir -p "/usr/local/share/rlwrap"
/bin/mkdir -p '/usr/local/share/rlwrap/filters'
 /usr/bin/install -c -m 644  filters/README filters/RlwrapFilter.pm filters/RlwrapFilter.3pm filters/count_in_prompt filters/pipeto filters/logger filters/null filters/unbackspace filters/pipeline filters/ftp_filter filters/history_format filters/simple_macro filters/template filters/scrub_prompt filters/paint_prompt filters/censor_passwords filters/listing '/usr/local/share/rlwrap/filters'
/bin/mkdir -p '/usr/local/share/rlwrap/completions'
 /usr/bin/install -c -m 644  completions/testclient completions/coqtop '/usr/local/share/rlwrap/completions'
make  install-data-hook
make[3]: Entering directory `/home/oracle/rlwrap-0.42'
chmod a+x /usr/local/share/rlwrap/filters/* 
make[3]: Leaving directory `/home/oracle/rlwrap-0.42'
make[2]: Leaving directory `/home/oracle/rlwrap-0.42'
make[1]: Leaving directory `/home/oracle/rlwrap-0.42'
[root@pushtest rlwrap-0.42]# rlwrap 
Usage: rlwrap [options] command ...

Options:
  -a[password prompt]        --always-readline[=password prompt]
  -A                         --ansi-colour-aware
  -b  <chars>                --break-chars=<chars>
  -c                         --complete-filenames
  -C  <name|N>               --command-name=<name|N>
  -D  <0|1|2>                --history-no-dupes=<0|1|2>
  -e  <char|''>              --extra-char-after-completion=<char|''>
  -f  <completion list>      --file=<completion list>
  -g  <regexp>               --forget-matching=<regexp>
  -h                         --help
  -H  <file>                 --history-filename=<file>
  -i                         --case-insensitive
  -I                         --pass-sigint-as-sigterm
  -l  <file>                 --logfile=<file>
  -m[newline substitute]     --multi-line[=newline substitute]
  -M  <.ext>                 --multi-line-ext=<.ext>
  -n                         --no-warnings
  -N                         --no-children
  -o                         --one-shot
  -O  <regexp>               --only-cook=<regexp>
  -p[colour]                 --prompt-colour[=colour]
  -P  <input>                --pre-given=<input>
  -q  <chars>                --quote-characters=<chars>
  -r                         --remember
  -R                         --renice
  -s  <N>                    --histsize=<N> (negative: readonly)
  -S  <prompt>               --substitute-prompt=<prompt>
  -t  <name>                 --set-term-name=<name>
  -U                         --mirror-arguments
  -v                         --version
  -w  <N>                    --wait-before-prompt=<N> (msec, <0  : patient mode)
  -W                         --polling
  -z  <filter command>       --filter=<filter command> (-z listing lists installed filters)

bug reports, suggestions, updates:
http://utopia.knoware.nl/~hlub/uck/rlwrap/

安装完成之后，默认情况下通过rlwrap sqlplus /nolog进入sql命令行，每次这样输入会麻烦，在oracle用户下的.bashrc设置别名。如下：

alias sqlplus="rlwrap sqlplus"

之后，运行source /home/oracle/.bashrc让其生效，接着运行sqlplus /nolog进入sql命令行，就可以很愉快地使用方向键，回退键。