On 2020/09/01 05:32, Greg Wooledge wrote:
On Tue, Sep 01, 2020 at 02:14:33AM -0700, almahdi wrote:
> How to get last commnda history line number?
as it's pure & directly viable in PS1 env. var.
PS1=`echo \!`
---
Doesn't work if you don't have '!' support (I generally found
'!' more often did unwanted things, but I never used csh):
echo thisline
thisline
x='\!'; echo "${x@P}"
2993
history 3
2990 0906@125642:echo thisline
2991 0906@125713:x='\!'; echo "${x@P}"
2992 0906@125721:history 3
---
i.e. it was on line 2990, not 2993
unicorn:~$ x='\!'; echo "${x@P}"
590
On 2020/09/01 06:05, Chet Ramey wrote:
On 9/1/20 5:14 AM, almahdi wrote:
How to get last commnda history line number
HISTCMD
The history number, or index in the history list, of the current
command.
---
Seem to need to subtract 2 from that num (is this right?)?
(in "4.4.12"):
echo "this is on what history line? ($HISTCMD)"
this is on what history line? (2985)
echo $(($HISTCMD-2))
2983
history 3
2983 echo "this is on what history line? ($HISTCMD)"
2984 echo $(($HISTCMD-2))
2985 history 3
Seems to only give correct line from history by subtracting 2?
Maybe its different in 5.x?
-l
