Questions tagged [ksh]
The Korn shell (ksh) is a shell with advanced scripting features, commonly found on commercial unices and some BSD systems but rarely used on Linux.
835 questions
1 vote
2 answers
155 views
How to pass an argument by reference to a function in KornShell (PDKSH 5.2.14)
In bash I can use local -n ref_name=$1 to pass an argument to a function by reference, but the same syntax in ksh throws an error saying typeset: -n: unknown option I tried nameref ref_name=$1 ...
- 239
1 vote
2 answers
269 views
Check if a given function name exists in a sourced shell script file
In Bash I can use $(type -t function_name) = "function" to check if the function by name function_name exists or not in a sourced file which is sourced using source file_name command. I'm ...
- 239
1 vote
1 answer
87 views
List all the directories residing in a directory path using KornShell
I have the below shell script which works fine in Bash to list all the directories residing inside a given directory path and add them to an array. But the same script code doesn't work in KornShell. ...
- 239
-2 votes
2 answers
114 views
HISTTIMEFORMAT not working as desired in RHEL 8 bash 4.4.20
so trying to capture history with date and readable timestamps AND the command should appear on same line. following is failing: Bash ver is: GNU bash, version 4.4.20(1)-release (x86_64-redhat-linux-...
- 268
8 votes
1 answer
331 views
bash or ksh 'vi' mode - How to jump to end of history (most recent command)?
I am a long time ksh user, and use bash under duress - both in 'vi' editing mode. One thing that has always niggled - after searching back through history for a command (.e.g <Esc>/needle), how ...
- 318
-1 votes
1 answer
99 views
"history -0" works in ksh, why doesn't "history -0" work in zsh?
Why does ksh history -0 (last command which is the history command itself) work, yet zsh it fails (only history -1 avail on my zsh). I tried zsh -f to use default options and it still fails. I'm ...
- 155
0 votes
1 answer
91 views
ksh: how to capture the current invoked command and arguments?
How do I obtain a variable with the current command and arguments? I would like to use escape code to print this in an Xterm title bar. I see Terminal.app on MacOS is determining the name of the ...
- 155
3 votes
1 answer
265 views
zsh: History is skipping commands and integers+, how to correct this?
Does anyone know what's occurring with zsh below and how to get the same behavior I show with ksh and bash? I'm noticing zsh on MacOS v13.7 is skipping even commands numbers in its history output, ...
- 155
0 votes
0 answers
63 views
Shell: redirecting output to /dev/tty and another file in a script? Not having to retype ending?
How do I accomplish this command to redirect command output to multiple files, without retyping the later A=1>&/dev/tty 1>&${TMP}/lastcmdout every time? I want to see output on the ...
- 205
0 votes
0 answers
58 views
Can't use combination of parentheses and variables in scripts [duplicate]
I have problems with replacing parentheses in combination with variables, in ssh. For instance, replacing (hello123blablabla) with (hello). So, it replaces all together, and parentheses as well, at ...
- 101
-5 votes
1 answer
107 views
how to check if a large script is only using full paths for the used cmd inside it?
to make a script more secure, we would need to confirm that used cmds, eg.: "/usr/bin/chown" instead of just "chown".
- 21
1 vote
1 answer
45 views
Running a command before running user input in ksh
I'm running Korn 93u+ and I want to echo the current time each time I enter a command. I currently just put the time in my PS1, but that's obviously flawed because if I leave the command line for some ...
- 351
0 votes
1 answer
69 views
xutils.sh in open sourced CDE?
I am reading a book about dtksh. The first "hello world" example begins as follows: #!/usr/local/dt/bin/dtksh . $UTILDIR/xutil.sh XUinitialize TOPLEVEL Hello "$@" XUlabel LABEL $...
- 651
5 votes
1 answer
369 views
How to determine what is opening tmp files when I invoke a subshell with ksh
I'm experiencing extremely sluggishness in opening subshells (by using ` ` or $( ) command substitutions in scripts) while in ksh on some Linux servers. The same problem does not exist in sh or any ...
- 183
3 votes
2 answers
133 views
Simulated Execution of Redirections
My shell is the Korn Shell, but I think the problem (and its eventual remedy) applies to other shells as well. I usually build a "simulation mode" into my scripts to test potentially ...
- 793