One more question.
Any idea how I can get the below for loop to work in bash ?
I want to fetch each value from history | awk '/sqlplus/ {print $1}' command output and then run history -d on each value.
But, it doesn't seem to work well as shown below
I have a person running a perl script that is parsing > 2G log files and pipes to cut -d " " -f 1,6,7,8...
The script itself is in a nfs mounted home directory. It runs fine when started from a solaris 8 box but fails after about 400 lines when started from the solaris 10 box. The solaris... (1 Reply)
I have a function "MyPrint" that runs great on a file (BaseData.txt) that has one line of data. If i add rows to the text file it's reading the tFile variable becomes a list of every field 2 in the file. To correct this, i tried to call the function from a loop where i read one line at a time and... (4 Replies)
I am new to the c shell script, can you let me know why the set rr= is not working.
C shell script
#! /bin/csh
Set tt= 12345_UMR_BH452_3_2.txt
set rr='echo $tt | cut –d”_” -f1'
syntax error (4 Replies)
Hi Forum
Im having problem with cut it even when i cut a field from an input file
eg
echo $x | cut -f1 -d':'
it doesnt read the whole line if there is a space in it
eg
thisLineHasA SpaceInIt
:wall:
it only read up to the space.What i want is so the it cut the field as one line ... (8 Replies)
Hi
Can anyone what I am doing wrong while using cut command.
for f in *.log
do
logfilename=$f
Log "Log file Name: $logfilename"
logfile1=`basename $logfilename .log`
flength=${#logfile1}
Log "file length $flength"
from_length=$(($flength - 15))
Log "from... (2 Replies)
hay
i am trying to get JUST the PID from the ps command.
my command line is:
ps -ef | grep "mintty" | cut -d' ' -f2
but i get an empty line. i assume that the delimiter is not just one space character, but can't figure out what should i do in order to do that.
i know i can use awk or cut... (8 Replies)
Hello,
I'm using cygwin on my Windows 7 machine.
From the man pages of cut:
--output-delimiter=STRING
use STRING as the output delimiter the default is to use the input delimiter
I tried the following commands and got the error messages:
$ cut -c1-10,20-30 -d... (10 Replies)
I'm a complete beginner in UNIX (and not a computer science student either), just undergoing a tutoring course. Trying to replicate the instructions on my own I directed output of the ls listing command (lists all files of my home directory ) to My_dir.tsv file (see the screenshot) to make use of... (9 Replies)
Discussion started by: scrutinizerix
9 Replies
LEARN ABOUT SUSE
history
history(n) Tcl Built-In Commands history(n)
__________________________________________________________________________________________________________________________________________________NAME
history - Manipulate the history list
SYNOPSIS
history ?option? ?arg arg ...?
_________________________________________________________________DESCRIPTION
The history command performs one of several operations related to recently-executed commands recorded in a history list. Each of these
recorded commands is referred to as an "event". When specifying an event to the history command, the following forms may be used:
[1] A number: if positive, it refers to the event with that number (all events are numbered starting at 1). If the number is negative,
it selects an event relative to the current event (-1 refers to the previous event, -2 to the one before that, and so on). Event 0
refers to the current event.
[2] A string: selects the most recent event that matches the string. An event is considered to match the string either if the string
is the same as the first characters of the event, or if the string matches the event in the sense of the string match command.
The history command can take any of the following forms:
history
Same as history info, described below.
history add command ?exec?
Adds the command argument to the history list as a new event. If exec is specified (or abbreviated) then the command is also exe-
cuted and its result is returned. If exec is not specified then an empty string is returned as result.
history change newValue ?event?
Replaces the value recorded for an event with newValue. Event specifies the event to replace, and defaults to the current event
(not event -1). This command is intended for use in commands that implement new forms of history substitution and wish to replace
the current event (which invokes the substitution) with the command created through substitution. The return value is an empty
string.
history clear
Erase the history list. The current keep limit is retained. The history event numbers are reset.
history event ?event?
Returns the value of the event given by event. Event defaults to -1.
history info ?count?
Returns a formatted string (intended for humans to read) giving the event number and contents for each of the events in the history
list except the current event. If count is specified then only the most recent count events are returned.
history keep ?count?
This command may be used to change the size of the history list to count events. Initially, 20 events are retained in the history
list. If count is not specified, the current keep limit is returned.
history nextid
Returns the number of the next event to be recorded in the history list. It is useful for things like printing the event number in
command-line prompts.
history redo ?event?
Re-executes the command indicated by event and returns its result. Event defaults to -1. This command results in history revision:
see below for details.
HISTORY REVISION
Pre-8.0 Tcl had a complex history revision mechanism. The current mechanism is more limited, and the old history operations substitute and
words have been removed. (As a consolation, the clear operation was added.)
The history option redo results in much simpler "history revision". When this option is invoked then the most recent event is modified to
eliminate the history command and replace it with the result of the history command. If you want to redo an event without modifying his-
tory, then use the event operation to retrieve some event, and the add operation to add it to history and execute it.
KEYWORDS
event, history, record
Tcl history(n)