[amp_mcq option1=”cat emp[!0-9]” option2=”more [emp][!0-9]” option3=”cat emp[x-z]” option4=”cat emp[a-z] E. None of the above” correct=”option1″]<\/p>\n
The correct answer is: A. cat emp[!0-9]<\/p>\n
The command The command The command [amp_mcq option1=”cat emp[!0-9]” option2=”more [emp][!0-9]” option3=”cat emp[x-z]” option4=”cat emp[a-z] E. None of the above” correct=”option1″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[675],"tags":[],"class_list":["post-16993","post","type-post","status-publish","format-standard","hentry","category-unix","no-featured-image-padding"],"yoast_head":"\ncat<\/code> is used to concatenate files. The square brackets [ ]<\/code> are used to specify a range of characters. The exclamation mark (!) is used to negate a range of characters. So, the command cat emp[!0-9]<\/code> will concatenate all files beginning with the string ’emp’ and followed by a non-numeric character.<\/p>\nmore<\/code> is used to display a file one page at a time. The command emp[x-z]<\/code> will display all files beginning with the string ’emp’ and followed by a character in the range ‘x’ to ‘z’. The command emp[a-z]<\/code> will display all files beginning with the string ’emp’ and followed by a character in the range ‘a’ to ‘z’.<\/p>\ncat emp[!0-9]<\/code> is the only command that will concatenate all files beginning with the string ’emp’ and followed by a non-numeric character.<\/p>\n","protected":false},"excerpt":{"rendered":"