i'm pretty new to unix programming. i just wanna know how exactly fork(), waitpid() works. i have read some from the book, but it's still confusing. especially with those < 0 and == 0. plz help!!!! (1 Reply)
I am a newbie to Unix, I am using vi editor. I was able to print output to the screen using simple scripts. But when I tried a midlevel script I don't see anything on the screen and Cursor is just blinking when I type ./test11 filename. I have used chmod 755 also, but of no use. Any help would... (3 Replies)
Hi,
I'll get a file whose first line comprises of system name, timestamp of file creation and the seq number. System name and seq num I need to other computation. My requirement is, I'll have to check whether the timestamp is greater than current timestamp and also check if the timestamp is... (2 Replies)
Dear all
I am still bit new in shell script area.I am writing down a shell script which I guess somewhere wrong so please kindly correct it. I would be greatful for that.
What I actually want from this shell script is that it will move all the files one by one to another server which can be... (2 Replies)
plz help me with this question :
1111 | aaaa | pppp | 23/9/87
3333 | dddd | oooo | 6/9/8
4444 | gggg | rrrr | 5/8/9
5555 | qqqq | eeee
ans:
5555 | qqqq | eeee
depending upon how many "|" are in the question
be quick.. (8 Replies)
hi...
i want to print the below format by using shell scripting...plz help me
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
Thanking u in advance...
regards
ram (1 Reply)
can you help me to answer these questions ...
Q1 - Write shell script to print the following pattern:
1
22
333
4444
55555
Q2-
Write shell script to compare the strings, check and see if a command
line argument matched the string "net321" print on screen "** string
matches ** " if... (3 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
*I want to Write shell script to print the this pattern:
1
22
333
4444
55555
*I want to Write shell... (2 Replies)
Discussion started by: last exile
2 Replies
LEARN ABOUT ULTRIX
cut
cut(1) General Commands Manual cut(1)Name
cut - cut out selected fields of each line of a file
Syntax
cut -clist [file1 file2...]
cut -flist [-dchar] [-s] [file1 file2...]
Description
Use the command to cut out columns from a table or fields from each line of a file. The fields as specified by list can be fixed length,
that is, character positions as on a punched card (-c option), or the length can vary from line to line and be marked with a field delim-
iter character like tab (-f option). The command can be used as a filter. If no files are given, the standard input is used.
Use to make horizontal ``cuts'' (by context) through a file, or to put files together in columns. To reorder columns in a table, use and
Options
list Specifies ranges that must be a comma-separated list of integer field numbers in increasing order. With optional - indicates
ranges as in the -o option of nroff/troff for page ranges; for example, 1,4,7; 1-3,8; -5,10 (short for 1-5,10); or 3- (short
for third through last field).
-clist Specifies character positions to be cut out. For example, -c1-72 would pass the first 72 characters of each line.
-flist Specifies the fields to be cut out. For example, -f1,7 copies the first and seventh field only. Lines with no field delim-
iters are passed through intact (useful for table subheadings), unless -s is specified.
-dchar Uses the specified character as the field delimiter. Default is tab. Space or other characters with special meaning to the
shell must be quoted. The -d option is used only in combination with the -f option, according to XPG3 and SVID2/SVID3.
-s Suppresses lines with no delimiter characters. Unless specified, lines with no delimiters are passed through untouched.
Either the -c or -f option must be specified.
Examples
Mapping of user IDs to names:
cut -d: -f1,5 /etc/passwd
To set name to the current login name for the csh shell:
set name=`who am i | cut -f1 -d" "`
To set name to the current login name for the sh, sh5, and ksh shells:
name=`who am i | cut -f1 -d" "`
Diagnostics
"line too long" A line can have no more than 511 characters or fields.
"bad list for c/f option"
Missing -c or -f option or incorrectly specified list. No error occurs if a line has fewer fields than the list calls
for.
"no fields" The list is empty.
See Alsogrep(1), paste(1)cut(1)