What exactly does "read -e" do? bind weirdnesses
The most recent bash docs say this about builtin function read with
option -e:
Readline (@pxref{Command Line Editing}) is used to obtain the line.
Consider this little program:
PS4='-$LINENO: $? $ '
set -x
builtin bind '"\C-x\C-r": "bind completion"'
builtin bind -P
while read -e -p 'huh? ' line ; do
echo $line
done
when I run it and enter C-x-C-r (control x + control -r) when it
prompts for input here is what I see.
$ bind '"\C-x\C-r": "bind completion"'
$ bash ./rlbug.sh
-3: 0 $ builtin bind '"\C-x\C-r": "bind completion"'
-4: 1 $ builtin bind -P
-5: 1 $ read -e -p 'huh? ' line
huh?
-6: 0 $ declare -p line
declare -- line=""
-5: 0 $ read -e -p 'huh? ' line
There are a number of things going on, none of which can I find
answered in bashref.texi for bashd 4.0 alpha or 3.2.
First, I gather from the return code 1 that bind is failing inside the
script. All right, but no error message or warning is given? In an
interactive shell if I enter say "bind -Z" at least I will get a
message saying that the bind option is invalid. Inside a script though
nothing.
Second although -e allows for some sorts of readline editing there are
other kinds of readline expansions that aren't getting run, In
particular C-x-C-r. Last and probably related, is the fact that C-x-C-
r isn't stored in variable line. (Adding -r to "read" doesn't change
things.)
Ideally, it would be nice to have read routine that made use of the
full features of readline. Failing that, it would be nice to have
documented what features one gets with "read -e" and what features one
doesn't get.
Thanks
readline in read -e and dynamic-complete-history problems
Configuration Information [Automatically generated, do not change]: Machine: i386 OS: netbsdelf Compiler: cc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' -DCONF_OSTYPE='netbsdelf' -DCONF_MACHTYPE='i386--netbsdelf' -DCONF_VENDOR='' -DLOCALEDIR='/usr/pkg/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -DDEFAULT_PATH_VALUE=/usr/bin:/bin:/usr/pkg/bin:/usr/local/bin -I/usr/include -O2 -I/usr/include uname output: NetBSD glacier.mikecappella.com 4.0_RC1 NetBSD 4.0_RC1 (GENERIC.MP) #0: Sat Sep 1 15:50:48 PDT 2007 [EMAIL PROTECTED]:/home/builds/ab/netbsd-4-0-RC1/i386/200709011431Z-obj/home/builds/ab/netbsd-4-0-RC1/src/sys/arch/i386/compile/GENERIC.MP i386 Machine Type: i386--netbsdelf Bash Version: 3.2 Patch Level: 33 Release Status: release Description: readline does not work correcly when used in read -e. The following program shows that read -e does not perform history completion correctly. --- #!/bin/bash set -o emacs bind 'set show-all-if-ambiguous on' bind 'set completion-ignore-case on' #bind TAB:menu-complete bind 'TAB:dynamic-complete-history' urls="http://example.com http://sample.net http://example.us http://example.net"; for i in $urls ; do history -s $i done echo $urls compgen -W "$urls" http://sa read -e -p "What? " arg1 --- previous-history and next-history works, but Tab completion only works for the to the first instance. And dynamic-complete-history or show-all-if-ambiguous do not work. Repeat-By: Run the above program. Hit Tab, note the partial completion to the first ambiguous portion of the history. Type any letter to from the urls list to disambiguate and hit Tab again. No additional completion occurs. Also, try ^N or ^P to cycle through the history list. Then backspace, and Tab to complete. Once again, Tab does not complete.
Re: Last modified files with owner / time / permissions
lexton wrote:
From what I read it is not good to use ls -la in the manner I use below.
Could I run this by just using the find command with additional arguments?
I still need to be able to print everything that the ls -la command gives me
GNU find has an -ls option IIRC, which produces output similar to ls -l.
If that's not the case, you can always find ... -exec ls -ld {} \; or so.
J.
Last modified files with owner / time / permissions
Hi,
Below is a bash script that prints out the files that have been modified in
the last 5 days.
>From what I read it is not good to use ls -la in the manner I use below.
Could I run this by just using the find command with additional arguments?
I still need to be able to print everything that the ls -la command gives me
- file owner and group
- time stamp
- permissions set
#!/bin/bash
# note run above line with -x for debug mode
PATH=/usr/bin:/bin; export PATH
{ # disk space left
df -h;
echo "";
# last logins to system
last;
# last 5 days of file modications sorted by the 9th column ( file path )
echo " Last 5 Days ";
ls -lt $( find /websites/path/ -type f -mtime -5 ) | sort -k 9;
echo " Full List ";
ls -lt /websites/path/*;
} | mail -s 'dev info' [EMAIL PROTECTED]
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